6l6 Transmitter

Reply to a comment by : SM7EQL on 2007-04-03 I enjoyed reading Your article Carl, I built my very first tube transmitter at age 13, in the mid 60´s. 6L6 Transmitter. 0 vac @ 4a ccs s3) 5. Chirp you say. STMM-105-02-S-D-SM-LC-01, Rectangular Connectors - Headers, Male Pins, CONN HEADER SMD 10POS 2MM. Jan 31, 2019 - Legacy of the golden era of the Radio: vacuum tubes, vintage radios, magazine covers, ads, scratched b/w photos, amateur radio, as it was in the days of Marconi and Hugo Gernsback. Equivalent, Catalog image #7. 95 kit, $119. I have never owned a nice new expensive piece of ham gear. Constructed in a round cornered case. It uses a 6L6 with a 6X5 rectifier and a 0D3 voltage regulator tube on the screen. The Icom website lists some vendors, but the radios are available easily via internet. It is built on a 8 x 8 inch baking pan that I picked up at the grocery store for $2. > RCA introduced the 6L6 tube in early 1936 as an audio power tube. If you want frequency agility, you could substitute a DDS VFO for the crystal and have the best of both worlds (LA6NCA has done some work in that area). Schematic only. <20:13:24> "Joe N2CX": It makes a distinctive sound when it "bloops" into oscillation hence their moniker of "blooper". Excellent for antique radio restoration projects or to set up a private vacuum tube museum. Introduction and justification. Icom is one of the most recognized brand in two way radios. This is my first test of the 6L6 station. A project like this IS a learning experience. Price: $1880 120V US / Canada $1920 240V Export. It was left in stock configuration, with a pair of 6L6's for the input/driver stage followed by a pair of 810's. The 6146, however is a totally different animal basically designed for RF amplifier service. Jan 16, 2013 - This Pin was discovered by Amplified Parts. Not many tube radios were made having the full range of fourty channels. If I get it fine, if not, it was worth more to someone else than it was to me. It is my understanding that the only 6v6 that can be used in a 6L6 amp is the JJ 6v6. During transmission this will be displayed. The Scrounger 6V6 Transmitter. TRANSMITTER The unit shown in the photograph of Fig. 6v6gt ef-89. 57-3901-5607, Solder, SOLDERPASTE WATER SOL SYR 100GM. The first and only independant Canadian manufacter. Eighty years ago this month, the September 1938 issue of Radio News carried the plans for this one-tube CW transmitter using a single 6L6. This invention relates to four-wire transmission systems and more particularly to arrangements for controlling transmission in signaling transmission systems and preventing singing in transmission sys. 15 Watts: 23. "The Stancor 25-B transmitter rig is designed specifically for the beginner. shipping $6. 35W AM Transmitter. the iron is pretty big, "thordarson" or somethingT-22R36, two others, T-21M54, T-20C54. 6-V-heater metal 6L6). Your Plate current (Ip) looks low for +420VDC. , EL34, 6L6, 6550, KT88, KT77, 350B, etc). The transmitter itself sold for less than $55, within reach of even a high school kid. Filter Choke: 193L. "The Stancor 25-B transmitter rig is designed specifically for the beginner. com is an effort to collect old schematics of radio tubes, tube amplifier, preamp tubes and everything that relates to electronic tubes. The transmitter, seen in the top, used EL32 and 6L6 tubes which provided a power output of 30 watts. A dynamotor is used to provide the operating voltage for the transmitter. jessbuynsell's items for sale on Carousell. 5 watts gets you heard, but 50 Watts has to be even better. The first popular beam tetrode was the RCA 6L6, introduced in 1936. Rubber feet are tacked on at the corners to elevate the base a half-inch or 80 to clear mounting screWll. This might be changed later after I take the transmitter off my utility power supply and connect it to a permanent one on the operating bench. Provisions are made to allow the crystal to be use in fundamental, second or third harmonic mode. in two bands LOW and HIGH with two different coils in plug. Built in power supply, too. The bottom panel is exposed. Mu (voltage gain), Gm (transconductance) and Rp (plate resistance) are the three electrical characteristics that make up the overall electrical characteristics for a vacuum tube. regenerative receiver. shipping $6. In order to maintain the heterodyne frequency of the transmitter. In the 6L6 design, it's easy to tweak the plate current upward for " a little more range. 0: 6L6: 172: AA8V/W8EXI 6CL6 One-Tube Transmitter: VERY complete layout and construction commentary: X: 16. It looked horrible but it worked. 10112684-F01-13ULF, Rectangular Connectors - Headers, Male Pins, CONN HEADER SMD R/A 13POS 2MM. I almost fell out of my chair; here was a great sounding 6L6 Sucker Stick Transmitter with no problems and a perfect sounding CW note. A standard 9 volt. During my research for that article, I discovered that Lew McCoy, W1ICP, had originally written that construction article and that it had appeared in the Nov. CODE features EL34, 5881, EL84 & 6L6 MST power amp voicings, and MST speaker cabinet models: 1960, 1960V, 1960AX, 1960HW, 1936, 1936V, 1912 & 1974X. It is my understanding that the only 6v6 that can be used in a 6L6 amp is the JJ 6v6. 00 insured in the usa, outside to be determined. Listen to one transmitter with the 6GY6 tube, as heard on the little portable radio shown below, I recorded the audio with my iPhone sitting in front of it, to listen simply click the radio picture below: General Info:. Title: 6146B 8298A Author: RCA Subject: FP-2000-09-30 Created Date: 10/1/2000 1:01:30 AM. My first build was an UltraLinear with >>> Dynaco (?) transformer and 6L6's. (This project was published in Electric Radio magazine, issue no. The 6AG7 / 6L6 CW transmitter is a result of much help and encouragement from the Glow Bug Net. 00: Add: 7271-7271, RCA. Band Transmitter for the Novice. Tungsol 6L6 G - new in box - quad. It can go almost twice that by pulling out the 0D3, but the keying is not as good that way. 257) Power Transformers: 278CX & 272JX. Important News and Announcements. 5W*2, which is enough to meet the requirements of home stereo audio system. Push-pull KT88/6L6/EL34/2A3/300B amp with "universal" driver / power supply PCB. Other Interests Speak Deutsch at a functional level, can get by in French but it is hardwork for me. 6l6 Breadboard Cw TX and matching 6sl7 regen. Welcome to 6V6 Electronics. Why not use a big tube like a 6L6 and get lots of output?. Brown II : "Lead Ch" US 6L6 and 12AX7 tone gives clear, clean overdrive with late breakup and great control. Four EL34 are around the same price as two 6550; four 6L6 a bit more. Shuguang audio(shuguangtube audio) Contact Us: Name: xiao hong Tel: +86-0731-89745701 Fax: +86-0731-89998000 Mobile: +86-13975805576 E-mail: [email protected] Find many great new & used options and get the best deals for UHF Guitar Wireless Audio System Transmitter Receiver Built-in Rechargeable 50m at the best online prices at eBay!. Advertisement. CW is the oldest way of conveying information by wireless. 1929 Hartley Transmitter: 6L6 Transmitter: 5U4G Power Supply: AC-1 6V6 Transmitter: 6AQ5 CW Transmitter: Pi Network Tuner : 6X4 Power Supply: Type 80 Tube Power Supply: 6SL7 Twinplex Regenerative Receiver: L - Network Tuner: 6AH6 Electronic T/R Switch: R-390A Rack Mount Speaker: Straight Key Gallery: Equipment Rack: 6DQ6 Transmitter: Buck Boost. 6V6 Homebrew Transmitter (better pictures soon!) I built this little 6V6 oscillator transmitter in 1995 or so and still use it from time to time on the air. 6L6 vacuum tube - Αναζήτηση Google. The VK1SV 6CL6-807 transmitter page. 75 29gam6 style #) 07 e-i laminated core pr) 115 vac 60 hz 1 ph s1) 850 vct @ 175 ma ccs s2) 5. On Friday, Senseonics Holdings Inc (6L6:DEU) closed at 0. 6E5 6L6 6P3 6P3S 6P7S Amateur radio breadboard transmitter Bug CallBook DIY Projects DIY Tube Radio Sites Do it yourself FireBottles GK-71 GK71 amplifier gk71 tube GKE-100 grounded grid GU-50 gu50 tube ham-radio Handbook HF amplifier Iambic Paddle Linear Amplifier MP3 Pirate Radio QRO QRP operation qrp transmitter radio transmitter circuit SKN. You never know what reading a book will lead you to doing :-) The design features an 0D3 150V DC regulator and cathode bias resistor that help control "chirp". qrp | qrpguys | qrp labs | qrplabs. It uses the H4289 power supply. Chirp you say. it has two 6L6, one 6V6, 6SL7, 6N7, 5U4G, 807, and "XTAL" and two weird coils that are plugged into sockets, too. 6L6-GA Post-war version of type 6L6-G, in smaller ST-14 shape. Tube Amplifier 30Watt ECF80(6BL8, 6Φ1Π) 6L6(6Π3C) Αναρτήθηκε από Electrons. The 6L6 transmitter was described in November, 1936, QST. 6E5 6L6 6P3 6P3S 6P7S Amateur radio breadboard transmitter Bug CallBook DIY Projects DIY Tube Radio Sites Do it yourself FireBottles GK-71 GK71 amplifier gk71 tube GKE-100 grounded grid GU-50 gu50 tube ham-radio Handbook HF amplifier Iambic Paddle Linear Amplifier MP3 Pirate Radio QRO QRP operation qrp transmitter radio transmitter circuit SKN. There are tons of well proven designs for single tube (the 6L6 is popular and readily available) transmitters with a crystal oscillator. A pairs 6L6 - $179. (The Line6 version has a "bug" transmitter with a rechargeable battery that has to be plugged into its base to charge - I don't like that. Classic Radio Gear & Nostalgia, 6L6 Resurrection, Ingram (K4TWJ), CQ 2004, Oct. Buffer 6L6 Final 2 x 807 with pi section filter antenna system. Explain to me again how the 0D2 works? X: 16. I adjust R105 to set the 6L6 at the maximum dissipation limit. Since 1998. Tungsol 6L6 G - new in box - quad. 1952 ARRL Handbook, pp 154-158, A One-Tube Transmitter for the Beginner, (6AG7 "grid-plate" circuit for 80 meter Novice band, 11 watts input, very popular with early Novices). Dec 25, 2019 - Treasure Trove of Ten One-Tube Radios: 1942 | OneTubeRadio. Bass guitar and double bass forums, classifieds, gear reviews, store, and more. one result. (There's a top-view photo of the little transmitter in the "Radio" handbook for 1940 -- I'll see about scanning it this evening. This transmitter is a version of the classical 2 section "Master Oscillator Power Amplifier" design using a 6AG7 pentode in a crystal controlled Colpitts oscillator with an aperiodic (un-tuned) anode load to drive the 6L6 beam tetrode Power Amplifier with a band switched "pi" network output. 5 MHz using different coil sets. I built mine with a bucket load of color TV flyback driver >> tubes, direct mains rectification and _no_ output transformer. I have several crystal controlled transmitters using 6V6's and 6L6's so I began searching for 6L6 designs. Bill was on the fringes of ham radio, but it never took hold of him to the extent to move him to obtain a license of his own. Class A amplification, its output power can up to 7. In the 6L6 design, it's easy to tweak the plate current upward for " a little more range. This amp is 23"H X 24"W x 10. 14% above the 52 week low of 0. An article was written on the 6L6 by Dave Ingram in CQ Magazine October 2004 page 54. Also, the 1947 circuit runs the 6AG7’s at a regulated 150 volts on the plates and 300 volts on the 6L6 plate. This amp is a perfect companion for any of my Horn Speakers, but can also be used with any other speakers. The 6AG7 / 6L6 CW transmitter is a result of much help and encouragement from the Glow Bug Net. Raytheon: 1937 Receiving Tubes (PDF, 7. Small re-biasing. Link to schematic at bottom of page. They've got free shipping, free tech support, easy payment plans, and the most knowledgable sales staff in the industry. Discover (and save!) your own Pins on Pinterest. A lesser amount of power was available on 10 meters due to doubling in the final stage. The Heathkit AT-1 Transmitter Kit The lowest possible dollar-per-watt price in the early 50's. QSO with LA5FH in Larvik and LA9WNA in Skien. The original version of this transmitter used a 350V B+ supply and produced about 10W of output power. During my research for that article, I discovered that Lew McCoy, W1ICP, had originally written that construction article and that it had appeared in the Nov. Many handbooks don't mention the operating characteristics of single 6L6 or 6V6 transmitters, so let it be known that a certain "touch" is needed to tune these. A 47-46-10 Transmitter for Four Bands # One of the most popular tube combinations for the low-power transmitter is that incorporating a 47 crystal oscillator, 46 doubler, and 10 final amplifier. A photograph of the mobile bus-mounted transmitter is shown in figure 3. The transmitter is keyed by opening and closing the space current supply circuit for the oscillator. Jan 16, 2013 - This Pin was discovered by Amplified Parts. I think this is a push-pull 6L6 crystal CW transmitter. timezone setting or the date_default_timezone_set() function. The 40A was a grand old transmitter full of tubes, high voltage, and a giant transformer. Free Electronic Parts. "Panel mounted crystal socket, stand-by switch, key click filer, A. > Are you looking at a Stancor 25-B transmitter, photo in article here:. 12W MOPA - 6AG7 Master Oscillator and 6L6 Power Amp Photo: My favorite transmitter. 10112684-F01-13ULF offered from PCB Electronics Supply Chain shipps same day. Our transmitter is in Hilltop, so you should be able to hear us all around the area. Temco Transmitter Equipment Mfg. This view shows the completed wired components looking toward the back. 56% above the 52 week low of 0. BC454 recvr Operational 80M ARC 5 T18 transmitter which now covers all of 80M band in CW and AM (cathode modulated through CW key jack) Twin 811A HB linear Amp. The first had the "ST" profile. You can contact the auctioneer on +49 (0)2236 384340 for more information. A completely scratch built QRP SSB/CW superhet transceiver for 80, 40 30 and 20m based on a symmetrical SA612 circuit. 315 set on Jul 06, 2020. The 6L6 transmitter was described in November, 1936, QST. I generally operate the 6146 PA at the same current as the 6L6 while operating AM. In order to maintain the heterodyne frequency of the transmitter. Two big stumbling blocks had to be worked on: 1) three different high voltage requirements, 815 B+ around 500 VDC, 815 screen around 250 VDC and oscillator B+ around 150-200 VDC and 2) a tendency of the 815 to run off on it's own as a tuned grid-tuned plate. Sign in to connect your existing user account and your social network account so you can still access your order history, address book and more. 807 to 6L6 or EL34 tube adapter. Are you related to them? There is one other low power community radio station starting up in Tacoma. home built 6l6 transmitter, Built-in battery allows hours of uninterrupted use; will this bluetooth transmitter work with Android phones Connect your handheld audio device to a larger Connect your handheld audio device to a larger speaker or home stereo system using this Commercial Electric Adapter. The GT-6L6-GE is a true replica of the legendary General Electric "clear top", and is manufactured with the same original General Electric parts, as well as many of the original components. in two bands LOW and HIGH with two different coils in plug. 3V 5A x2 Tube Amp Transmitter Power Transformer AS-15T950. 57-3901-5607 offered from PCB Electronics Supply Chain shipps same day. My first Heathkit was an AT-1 transmitter that somebody else had built. , EL34, 6L6, 6550, KT88, KT77, 350B, etc). Free Electronic Parts. Shop our selection today!. The first popular beam tetrode was the RCA 6L6, introduced in 1936. Created for chatting about electronics projects, and maybe some woodworking and gardening too. A power valve with an added screen grid next to the Anode can be described as a Tetrode or Pentode. , the JETTA offers features such as Metro Zero Loss effects loop to maintain signal clarity with even the longest effects chain and is built with premium components like the UK-made Celestion H30 speaker, Heyboer and Triad transformers, and Jupiter signal capacitors. Oscillator and driver are EL84 (6BQ5) at 300V. Welcome to Raven Audio, the #1 online source for All-American-made stereo tube amps/high-end stereo amplifiers, speakers, cables, & other accessories. check or money order. At the time Philips had already developed and patented power pentode designs, which were rapidly replacing power triodes due to their greater efficiency. com in a single category. It uses a 6L6 with a 6X5 rectifier and a 0D3 voltage regulator tube on the screen. A completely scratch built QRP SSB/CW superhet transceiver for 80, 40 30 and 20m based on a symmetrical SA612 circuit. This page presents the original article that I scanned from a recently acquired copy of the old magazine. Blackstar Studio 10 6L6. The 5U4 rectifier tube is capable of handling a wide range of loads. Boss Katana-50 MkII 1x12" 50-watt Combo Amp 50/25/0. 6V6 Homebrew Transmitter (better pictures soon!) I built this little 6V6 oscillator transmitter in 1995 or so and still use it from time to time on the air. Input voltage amplification stage adopts 6N1, low distortion, low noise and wide frequency response. Warning: date(): It is not safe to rely on the system's timezone settings. I almost fell out of my chair; here was a great sounding 6L6 Sucker Stick Transmitter with no problems and a perfect sounding CW note. The beam tetrode design of the 6L6 allowed RCA to circumvent Philips' pentode patent. As I perused the journals this idea gelled into a design based on an electron-coupled Colpitts crystal oscillator using a 6AG7 metal tube and a dual-807 power amplifier. 00 60W Toroidal Output Transformer for EL34 6L6 KT88 Tube Amplifier MP. Connect via USB to use CODE as a DAW. The transmitter, seen in the top, used EL32 and 6L6 tubes which provided a power output of 30 watts. Greco Eg-800. line filtering VFO or crystal excitation - up to 35 watts input Built-in power supply provides 425 volts at 100ma Power requirements: 105-125 Volt A. 6L6-GA Post-war version of type 6L6-G, in smaller ST-14 shape. Rogers [1925] Rogers. Heathkit HX-10 Marauder. This made it efficient but its characteristic had a distinct residual kink. 023MHz adjustable CW telegraph Transmitter Kits HF power Amplifer 40dB With Two modes from diversity stores in usa. 1 Wurlitzer 2x 6L6 Tube Audio Amplifier POWER Transformer Vintage from. 2x kHz AM tube shortwave transmitter with CV4055 and 6146W. Power stage adopts 6L6 power tube standard connection method with high amplification efficiency. The white line is an instrument that shows the output voltage. ) Seventy years later , vacuum tubes, and especially triodes, continue to be the lowest distortion amplifying elements ever made. It can handle up to 30 watts of audio power and since my modulator is generating around 15 watts of audio power it's a good match. com in a single category. Also, the 1947 circuit runs the 6AG7’s at a regulated 150 volts on the plates and 300 volts on the 6L6 plate. A beam tube can be used for many other circuits like oscillators, transmitters and RF amplifiers. Svetlana, a joint Venture between Svetlana US and a St. The design of a one-tube (or one transistor) transmitter is a compromise involving power output, keying, and the effect of antenna coupling on operation. I am running 340 volts on the 6L6 plate and 250 volts on the 6AG7’s. The British Type 3 Mk. My goal was to have a nice copy of a 1936 style 6L6 transmitter. The one thing that deterred me was the problem of mistuning the final plates to the second harmonic and getting 40 meter out. Hear for yourself why the Wall Street Journal calls this "The Miracle of a $150 (or Less) Tube Amplifier". This page presents the original article that I scanned from a recently acquired copy of the old magazine. The 6L6 Transmitter I am to build is that of CW (Continuous Wave) type. It is built on a 8 x 8 inch baking pan that I picked up at the grocery store for $2. One option could be to use my K2 as a stand > alone transmitter with an appropriate "external receiver" output modification > to the K2 and a "mute" relay fed from the normal linear amplifier relay. Apex ® matched tubes are matched for plate current and transconductance. The power output is only about 5 watts. A lesser amount of power was available on 10 meters due to doubling in the final stage. It does not convey the spoken word using AM (Amplitude) or FM (Frequency) modulation. I almost fell out of my chair; here was a great sounding 6L6 Sucker Stick Transmitter with no problems and a perfect sounding CW note. Fender has been using them since the 1940s and since then there have been many others who have designed hugely popular tube amplifiers that rely on the 6L6 tube types for their tone. It uses 6 x 6550s or KT88s to get a genuine 435W rms. EVH 5150III 50 Watt 6L6. ) Seventy years later , vacuum tubes, and especially triodes, continue to be the lowest distortion amplifying elements ever made. Audiophile Review – 6L6 Type Vacuum Tube Shootout November 1, 2016 That Time McIntosh Saved the Grateful Dead October 27, 2016 Shredding Light on the Future of Metal August 23, 2016. 6L6 Transmitter. Carlson] bought a Globe Scout Model 40A ham radio transmitter at a hamfest. Email Me When In Stock View. 5 MHz using different coil sets. 14% above the 52 week low of 0. 35W AM Transmitter. After the war, however, most metal tubes were released in glass varieties. part: KN 3235B prices Specifications KN 3235B : type: Integrated PA Amplifier; model : KN 3235B; brand: KNIGHT (Allied radio) country/region of. At times, fewer and fewer these days, I put in a bid for what I am willing to spend, then dont look at the add again. The RA-150 transmitter was highly configurable by the user. Nominal output power 200 Watts. An 807 is basically a 6L6 with a plate cap to allow for higher EP and a little bit of shieldibg around the grid leads for RF stability. The screen is always kept at a high +V. :001_smile: , fm. You know, when every single QSO was exciting because it was accomplished with gear you built yourself. It is my understanding that the only 6v6 that can be used in a 6L6 amp is the JJ 6v6. It uses a 6L6 with a 6X5 rectifier and a 0D3 voltage regulator tube on the screen. This is more strictly true with most beam power tubes (like 6L6, 6V6, KT66, etc) rather than true pentodes (EL34, EL84, etc). Tubes used are Collins C-100 (later replaced by 6L6 in 1937) as oscillator tube, 46 as 1st doubler, RK-23 as R-F amp, C830B as 2nd doubler and C-211D (later replaced by 211H) as final, in the speech amplifier two 57 and a 2A3 as power amplifier and in the power supply two 83-V for standard 350V B+ and two 866 mercury rectifiers for 1200 B+ for. On Sat, 1 Apr 2006, Dave wrote: > Recently I bought an excellent Drake R4A and am struggling to find a > companion transmitter for it. >>> >> >> Wimpy stuff. There are tons of well proven designs for single tube (the 6L6 is popular and readily available) transmitters with a crystal oscillator. The BC-250GY modulator. The beam tetrode design of the 6L6 allowed RCA to circumvent Philips' pentode patent. 0b/2,0a/2,0/1,4/1,3/1,2/1,1, Latest Optical Fiber 8K HDMI Cable, The Latest HDMI 2,1 Cable Supports Full [email protected],4X clear compared with 1080p, HDMI 2,1 technology is. (Clean Pullout), 6146BMP-TAY Transmitting Tube, Matched Pair, Beam Power Amplifier. 00: Add: 7271-7271, RCA. Ed Porter's transmitter had electrolytic rectifiers pumping 1000 volts around on bare wires. 4 (ef-89, 6v6gt, 807, 813). The Viking III transmitter is running 100 watts output into a dummy load while the Flex 5000A receiver is set to the AM mode with a 12 kc bandwidth. During transmission this will be displayed. 6L6 Transmitter A KC5LDO 6L6 Transmitter, W5DXS - Heart Of Texas DX Society Amatuer Radio web page of information about DX, contesting and other Ham related information. See full list on solorb. Notes on single 6L6GC transmitter w/0D3A regulator, and 5U4 power supply. It looked horrible but it worked. 5W*2, which is enough to meet the requirements of home stereo audio system. It is built on a 8 x 8 inch baking pan that I picked up at the grocery store for $2. The modification is consists of heavily modulating the screen of the 6146 RF output tube as well as the plate. Altec Lansing Mixer Model 1684A Item# 996123: Year: 1980's Color: Black Used Altec Lansing microphone mixer unpowered. Title: 6146B 8298A Author: RCA Subject: FP-2000-09-30 Created Date: 10/1/2000 1:01:30 AM. What a fun ride that was. broadcast band. On Sat, 1 Apr 2006, Dave wrote: > Recently I bought an excellent Drake R4A and am struggling to find a > companion transmitter for it. Many handbooks don't mention the operating characteristics of single 6L6 or 6V6 transmitters, so let it be known that a certain "touch" is needed to tune these. Chirp you say. com Add: Room 369,xingyao,Changsha City,Hunan Province,China ,hunan Province,China. Referring to the 6L6GC tube I measured in figure 4, we see a properly biased 6L6 tube would only require 10-20 volts of open key voltage to cut off the transmitter. Qrp Ham Radio Survival Gear Tripod Radios Over The Years Night Simple Projects. 88813-119HLF, Rectangular Connectors - Headers, Male Pins, CONN HEADER R/A 19POS 2. Xtal oscillator - 6AG7. Specs: Size - 15" wide X 11" high X 9" deep Modes - AM and CW Tubes - P-P 6L6 Final, P-P 6L6 Modulators, 6L6 Oscillator, two 6SN7's in Modulator audio stages and two 5U4's in power supply. 'Dit schema is EXPERIMETEEL'. A beam tube can be used for many other circuits like oscillators, transmitters and RF amplifiers. The design of a one-tube (or one transistor) transmitter is a compromise involving power output, keying, and the effect of antenna coupling on operation. Weight: 27 lbs: WRL/Globe Champion 300/300A Modes: AM/CW Bands: 160 - 10 Meters Input Power: 275W-AM, 350W-CW VFO: Yes Power Supply: Internal Final Tube(s): 2ea. This means that the plate current is largely unchanged by even a large increase in plate voltage. by Edward S. (The 6L6 has been in continuous production since 1936, a record unmatched by any other electronic device - we all owe the electric-guitar players a big thank you for keeping the tube factories open. Two years ago I saw Gary's WD4NKA webs site showing a schematic of a MOPA Transmitter, the 6AG7 / 6L6. Yes it had chirp and not the type used to program rigs!. Rogers [1925] Rogers. A pairs 6L6 - $104. Siberian-shop : Reflektor (Saratov city) - High-End tubes Chips \ ICs \ CPUs Manuals & Books Magic Eye tubes Dekatron Counting tubes Vintage electronic Rare\vintage tubes Capacitors Power tubes Numitron tubes Sockets Nixie HAM Radio power tubes Tungsram tubes Tesla tubes RFT tubes POLAM tubes TALAM\UNITRA tubes wholesale offers Sale! nixie clock kit, nixie clocks, tubes television, tubes for. One off model Q-Mac backpack transmitter made in Australia, its very simple and user friendly. 1 Wurlitzer 2x 6L6 Tube Audio Amplifier POWER Transformer Vintage from. 2-8 watt push-pull amp using 7044 computer triodes. Heathkit AT-1 Amateur Transmitter Range: 80, 40, 20, 15, 11, 10 meters Tubes: 1 - 6AG7 oscillator-multiplier 1 - 6L6 amplifier-doubler 1 - 5U4G rectifier Panel mounted crystal socket stand-by switch Key click filer A. 0 vac @ 4a ccs s3) 5. A 47-46-10 Transmitter for Four Bands # One of the most popular tube combinations for the low-power transmitter is that incorporating a 47 crystal oscillator, 46 doubler, and 10 final amplifier. the collins 32g transmitter Introduced in September of 1936, the 32G was a celebration of the new 6L6 (it used eight initially) and was offered as a general purpose HF transmitter to both the amateur community and to commercial markets. net/15-watt-fm-transmitter. I am running 340 volts on the 6L6 plate and 250 volts on the 6AG7’s. 5, RF Shields, RF SHIELD 2. Buffer 6L6 Final 2 x 807 with pi section filter antenna system. The 6L6 power pentode takes 900 mA on the cathode heater and 250 to 360 volts on the plate. I have been trying to line up the parts because I wanted to build it with the 1941year original parts and the way it was built shown in the handbook as much as possible. in three bands The transmitter cover the frequency 3. N4QR Bob Null. WU2D Retro Station Hallicrafters Sky Buddy Receiver and 6AG7/6L6 Transmitter. 6l6 Breadboard Cw TX and matching 6sl7 regen. One off model Q-Mac backpack transmitter made in Australia, its very simple and user friendly. one result. With four 6L6 tubes in PPP, I can only get around 120W > RMS (per channel). At home, I had a "new" setup: The transmitter was the Heathkit Apache TX-1 running around 200 watts! The receiver is a surplus Navy RBM low-frequency receiver with crystal controlled converters to bring in the various. Transmitter specifications: 4 type 5U4G, 1 type 6AB7, 14 type 6AC7, 1 type 6H6, 10 type 6L6, 10 type 6SN7GT, 4 type 6SQ7, 2 type VR-105/30,. Some dings and scratches as well as labels from previous own. Beam tetrodes still made today include the SV6L6GC and SV6550C; the former is most popular in guitar amplifiers, while the latter is the most common power tube in modern high-end audio amplifiers for the home. 6MB PDF file) - Data on the Raytheon "RK-series" of transmitting tubes (as well as a few others), and some applications info. The GT-6L6-GE is a true replica of the legendary General Electric "clear top", and is manufactured with the same original General Electric parts, as well as many of the original components. Electric Guitar Amps Top-Sellers to buy online at MusicStore. I used a 6L6GC, which has higher dissipation than a regular 6L6. I used a spray that is called "Hammered Metal" and had a nice antique look. A CW transmitter conveys intelligence in the form of Morse Code dots and dashes by turning on and off the transmitter. 6L6-WGB "Industrial" version of type 6L6-GB. <20:13:24> "Joe N2CX": It makes a distinctive sound when it "bloops" into oscillation hence their moniker of "blooper". That attempt was covered in the Dec. Small re-biasing. A simple one tube design with 6L6. is one of the largest makers & suppliers of musical instruments, amplifiers & professional audio systems worldwide. In fact, in the years since, I picked up many cool things to plug the mike into, such as reel-to-reel and cassette decks, PA systems, mixing boards, digital recorders, and both an AM and FM transmitter. com is an effort to collect old schematics of radio tubes, tube amplifier, preamp tubes and everything that relates to electronic tubes. This upgrade replaced an aging Continental 816R4. The 6L6 power pentode takes 900 mA on the cathode heater and 250 to 360 volts on the plate. Siberian-shop : Reflektor (Saratov city) - High-End tubes Chips \ ICs \ CPUs Manuals & Books Magic Eye tubes Dekatron Counting tubes Vintage electronic Rare\vintage tubes Capacitors Power tubes Numitron tubes Sockets Nixie HAM Radio power tubes Tungsram tubes Tesla tubes RFT tubes POLAM tubes TALAM\UNITRA tubes wholesale offers Sale! nixie clock kit, nixie clocks, tubes television, tubes for. 6l6 transmitter. Qrp Ham Radio Survival Gear Tripod Radios Over The Years Night Simple Projects. THE COLLINS 32F TRANSMITTER. Canada, Toronto. T150 Complete Transmitter KNIGHT Primo 6146(2)+all Set Tube tubes tubes Tube Set T150 Primo Complete 6146(2)+all KNIGHT Transmitter. A Radionette amplifier from the 50's is power and modulator for the 6L6 transmitter. Oscillator and driver are EL84 (6BQ5) at 300V. TV Transmitter 1 oldschematic. An article was written on the 6L6 by Dave Ingram in CQ Magazine October 2004 page 54. (have a search around the forums for the science ) But the CL90/A works wonders for inrush surge limiting, especially for toroids. 30 Major components: Tubes: three 807s and one 6L6 Kenyon transformer (T3 S13502) I recently acquired this mystery military transmitter dating from. they look and probally have low hours since they were in a military transmitter and have clear glass. Other Interests Speak Deutsch at a functional level, can get by in French but it is hardwork for me. This amp will generate 50 watts of power which comes across very loud. N4QR Bob Null. I am running 340 volts on the 6L6 plate and 250 volts on the 6AG7's. Filter capacitors are the unusual 16 µF, 700. home built 6l6 transmitter, Built-in battery allows hours of uninterrupted use; will this bluetooth transmitter work with Android phones Connect your handheld audio device to a larger Connect your handheld audio device to a larger speaker or home stereo system using this Commercial Electric Adapter. 5U4G Power Supply for the 6L6 Transmitter The power supply circuit I chose for my 6L6 transmitter is fairly common. Don't spill the coffee on that thing Ed. A Radionette amplifier from the 50’s is power and modulator for the 6L6 transmitter. A dynamotor is used to provide the operating voltage for the transmitter. My first build was an UltraLinear with >>> Dynaco (?) transformer and 6L6's. Weight: 27 lbs: WRL/Globe Champion 300/300A Modes: AM/CW Bands: 160 - 10 Meters Input Power: 275W-AM, 350W-CW VFO: Yes Power Supply: Internal Final Tube(s): 2ea. Also have two matched pair available. Other clues: it has three rf (air core) chokes, no other iron core choke, uses two variable condensers, keys thru one of these chokes to pin 8. Transmitter. Much more advanced than those used in the Para sets. Free delivery and returns on eligible orders. 5 watts gets you heard, but 50 Watts has to be even better. 6-V-heater metal 6L6). Discover (and save!) your own Pins on Pinterest. It is an HD facility. Nothing in either of the books mentioned has one like this. Icom is one of the most recognized brand in two way radios. Notes on single 6L6GC transmitter w/0D3A regulator, and 5U4 power supply. A 6L6 Classic (shown below) WB2MIC 6L6 Transmitter Project. Since 1998. WU2D Retro Station Hallicrafters Sky Buddy Receiver and 6AG7/6L6 Transmitter. (9KB) 9300 RFT Microphone by Neumann:(25KB) This is a hard to find German condenser microphone with three tubes and a Neumann element. Free delivery and returns on eligible orders. Listen to one transmitter with the 6GY6 tube, as heard on the little portable radio shown below, I recorded the audio with my iPhone sitting in front of it, to listen simply click the radio picture below: General Info:. Ed Porter's transmitter had electrolytic rectifiers pumping 1000 volts around on bare wires. It does not convey the spoken word using AM (Amplitude) or FM (Frequency) modulation. After the war, however, most metal tubes were released in glass varieties. BC454 recvr Operational 80M ARC 5 T18 transmitter which now covers all of 80M band in CW and AM (cathode modulated through CW key jack) Twin 811A HB linear Amp. It is about time I get my 6L6/815 Transmitter on the air. You "can" get 100W from a pair of 6550, but it needs uncommon iron. Two big stumbling blocks had to be worked on: 1) three different high voltage requirements, 815 B+ around 500 VDC, 815 screen around 250 VDC and oscillator B+ around 150-200 VDC and 2) a tendency of the 815 to run off on it's own as a tuned grid-tuned plate. World's Largest Supplier of Amateur Radio, Ham Radio, and Communication Equipment. I read the RSGB Handbook 5th edition section on Transmitters and in particular tube oscillators. CW is the oldest way of conveying information by wireless. In order to maintain the heterodyne frequency of the transmitter. At the time Philips had already developed and patented power pentode designs, which were rapidly replacing power triodes due to their greater efficiency. '93 Electric Radio, Issue#56, Building a Two-Tube 6AG7 80/40M CW Transmitter, pgs. Band Transmitter for the Novice. These features include automatic antenna switching, break-in keying and a 3-position crystal selection switch so you can switch between 3. BC454 recvr Operational 80M ARC 5 T18 transmitter which now covers all of 80M band in CW and AM (cathode modulated through CW key jack) Twin 811A HB linear Amp. The crystal socket was a multi-holed socket and would accept several variations of crystals. Brand new $220 plus shipping ( shipping is usually $30 ). The 6DQ5 design was the only Novice-class Handbook transmitter that promised 75 watt plate input power, 5-band coverage. Jan 31, 2019 - Legacy of the golden era of the Radio: vacuum tubes, vintage radios, magazine covers, ads, scratched b/w photos, amateur radio, as it was in the days of Marconi and Hugo Gernsback. This circuit can be used with a variety of different power tubes without modification (e. Using a 6L6 pretty much guarantees operation at greater than a watt and could easily run 5 or 10 Watts. A Two Tube transmitter. **new pompos 20 watt am transmitter 6l6 single sxedio **pompos am 100-120watt transmitter 6l6-2x807 cirquit **pompos am 200 watt transmitter 6v6 - 807- 811 cirquit **pompos am 300 watt transmitter 6l6-807-813 cirquit **pompos am 400 watt transmitter 6l6-807-4x150a cirquit **pompos am 400 watt transmitter 6sk7- 6146 - 8 x 6146. My first build was an UltraLinear with >>> Dynaco (?) transformer and 6L6's. By the early 1940s, the 6L6 was adapted to the "ST" glass envelope, the then-standard five pin base, and with a top cap connection to the plate. 15 Watts: 23. Created for chatting about electronics projects, and maybe some woodworking and gardening too. The project I settled on was a very basic but solid design presented by Don Mix (W1TS) in the October 1968 issue of. It can be connected to any type of stereo audio source such as iPod, Computer, Laptop, CD Player, Walkman, Television, Satellite Receiver, Tape Deck or other stereo system to transmit stereo sound with excellent clarity throughout your home. 3 dB - 50 TO OVER 75 dB 2ND HARMONIC SUPPRESSION Imported 6L6 vacuum tubes. Antenna dimensions and building instructions may be found in any amateur handbook. It is a standard power supply that can be used for many projects. Examples are the 6V6GT for the 6V6, the 6L6GC for the 6L6, and the 6CL6 for the 6AG7. in three bands The transmitter cover the frequency 3. A simple, single-tube cw transmitter can be made by coupling the output of an oscillator directly to an antenna (figure 1-28). we4a western electric pickup. Discussion in 'Homebrew and Kit Projects' started by K4EM, Feb 13, 2012. The Temco RA-150 Transmitter. 5 watts gets you heard, but 50 Watts has to be even better. Sites like Amazon frequently list them for sale. Bass guitar and double bass forums, classifieds, gear reviews, store, and more. Power output is ten watts of RF. One Valve QRP Transmitter 6V6 tube - Duration: 0:47. 6L6 is the designator for a vacuum tube introduced by Radio Corporation of America in July 1936. After the war, however, most metal tubes were released in glass varieties. You never know what reading a book will lead you to doing :-) The design features an 0D3 150V DC regulator and cathode bias resistor that help control "chirp". General information Vacuum State is founded by Allan Wright. This might be changed later after I take the transmitter off my utility power supply and connect it to a permanent one on the operating bench. The 6DQ5 design was the only Novice-class Handbook transmitter that promised 75 watt plate input power, 5-band coverage. The following guidelines should be taken into account: The free shipping option allows TubeDepot to choose the most appropriate carrier and service. T150 Complete Transmitter KNIGHT Primo 6146(2)+all Set Tube tubes tubes Tube Set T150 Primo Complete 6146(2)+all KNIGHT Transmitter. * AL7OP SK Feb 4 2018 * So long and thanks for all the fish. A 6L6 Classic (shown below) WB2MIC 6L6 Transmitter Project. 6L6 is the designator for a vacuum tube introduced by Radio Corporation of America in July 1936. So what's transconductance? Think about it this way – the power tube conducts a certain amount of plate current depending on the amount of plate voltage and control grid voltage we apply to it. It is about time I get my 6L6/815 Transmitter on the air. 57-3901-5607, Solder, SOLDERPASTE WATER SOL SYR 100GM. Sweetwater is one of the largest pro audio dealers in the world, offering a huge selection of music instruments and audio gear. I built mine with a bucket load of color TV flyback driver >> tubes, direct mains rectification and _no_ output transformer. com in a single category. , 6146-P Transmitting Tube, Beam Power Amplifier USA brand. One option could be to use my K2 as a stand > alone transmitter with an appropriate "external receiver" output modification > to the K2 and a "mute" relay fed from the normal linear amplifier relay. This is used for tuning the output circuit. high performance voltage regulator. Heathkit HX-10 Marauder. At home, I had a "new" setup: The transmitter was the Heathkit Apache TX-1 running around 200 watts! The receiver is a surplus Navy RBM low-frequency receiver with crystal controlled converters to bring in the various. BC454 recvr Operational 80M ARC 5 T18 transmitter which now covers all of 80M band in CW and AM (cathode modulated through CW key jack) Twin 811A HB linear Amp. The 4 Best EL84 Tubes – Reviews 2019 image #10. On the suggestion of my good friend Larry NE1S, I ordered a neat little transmitter kit from the good folks at Pastime Projects. It is an HD facility. A simple, single-tube cw transmitter can be made by coupling the output of an oscillator directly to an antenna (figure 1-28). low power am transmitter. The Heathkit AT-1 Transmitter Kit The lowest possible dollar-per-watt price in the early 50's. , the JETTA offers features such as Metro Zero Loss effects loop to maintain signal clarity with even the longest effects chain and is built with premium components like the UK-made Celestion H30 speaker, Heyboer and Triad transformers, and Jupiter signal capacitors. LifeIsTooShortForQRP 808 views. A26 single or pp plates to line 30k split 0 50, 125/150, 200/250, 333, 500/600 20-40k 2520 +15 A28 transistor to vc 48ct 750m16 split, 8, 4 40-20k 5 5w. The 6L6 is a pentode that, according to Wikipedia, was introduced by the Radio Corporation of America (RCA) in July 1936. The one thing that deterred me was the problem of mistuning the final plates to the second harmonic and getting 40 meter out. Popular military surplus AN/ART-13 and Navy ATC transmitter power supply project. You may use a quad of either 6L6 or EL34. 4 mc Frequency control: crystals Tubes: 1 - 6J5 Pierce oscillator 1 - 6L6 amplifier Price in 1941: $20. com in a single category. About 6L6 Transmitter The resource is currently listed in dxzone. Many amateur radio operators used the 6L6 in class C service for transmitters over the years because it was inexpensive due to mass production, and it could be salvaged from scrapped TV or audio equipment. CW is the oldest way of conveying information by wireless. Each channel is independent that can be preset programmable, MIDI controllable, and variable wattage ranging from 10 to 120 scorching watts. The Heathkit AT-1 Transmitter Kit The lowest possible dollar-per-watt price in the early 50's. This invention relates to four-wire transmission systems and more particularly to arrangements for controlling transmission in signaling transmission systems and preventing singing in transmission sys. The KTQA home studio will be downtown, right off the link. The system includes the transmitter, receiver and all necessary accessories including antennas, guitar cable, power supply and batteries. 7213-Transmitting Tube, 7213, ITT Gold, Large quantities available - (Pic) 295. What makes their Valve interesting is that Svetlana (or rather the Russian facility where the Valves are manufactured) has been making directly heated. In 1930, the station transmitter was most likely built not bought! Amazon and Credit Cards were not invented as yet and as the US enetered the Golden Age of Radio Broadcasting there was a large volume of receiver manufacturing taking place. I built mine with a bucket load of color TV flyback driver >> tubes, direct mains rectification and _no_ output transformer. Referring to the 6L6GC tube I measured in figure 4, we see a properly biased 6L6 tube would only require 10-20 volts of open key voltage to cut off the transmitter. 51UF 2% 160VDC RADIAL. universal tone control. This view shows the completed wired components looking toward the back. Heathkit Sb-221 King Conversions 6m Ham Radio Amplifier Runs Beautifully. While it was never advertised in QST, it appears to be late 1934/early ’35 (a surviving schematic is dated 2-35). Very interesting to see use two 6V6 tubes for low power hand generator operation and two 6L6 tubes for power pack operation in the same circuit. 6l6 transmitter 6l6 transmitter. Welcome to 6V6 Electronics. Advertisement. Producing 60 watts RMS of all ECC83 and 6L6 valve tone, the Laney IRT60H Ironheart Guitar Amplifier Head possess masses of gain and loads of features that make the IRT60H so much more than just a rockin’. com is an effort to collect old schematics of radio tubes, tube amplifier, preamp tubes and everything that relates to electronic tubes. We tested 4 watts CW output on 40 meters. Title: A Simple Transmitter Created Date: 5/10/2000 10:33:29 AM. I have built more amplifiers using 6L6’s than any other tube. Don't really know what my 6L6 transmitter would have done just ran it on 40 meters at about 25 watts inputwe always just considered them to be audio tubes. Created for chatting about electronics projects, and maybe some woodworking and gardening too. A 47-46-10 Transmitter for Four Bands # One of the most popular tube combinations for the low-power transmitter is that incorporating a 47 crystal oscillator, 46 doubler, and 10 final amplifier. It is my understanding that the only 6v6 that can be used in a 6L6 amp is the JJ 6v6. Throughout the years I have built my own radios or fixed up old used equipment. Unfortunately, if your power supply is only 12 volts, the currents in your transmitter will be 50 times higher for the same amount of power. The T60-1 runs 60 watts from two 6L6's in P-P. Why not use a big tube like a 6L6 and get lots of output?. Electric Guitar Amps Top-Sellers to buy online at MusicStore. I usually monitor the output with my bench scope but didn't have it on today. Your Plate current (Ip) looks low for +420VDC. It uses an 807, 6L6, 6A6, and type 42 valves. BC454 recvr Operational 80M ARC 5 T18 transmitter which now covers all of 80M band in CW and AM (cathode modulated through CW key jack) Twin 811A HB linear Amp. Largest variety of 6l6 Hf and many relevant listings. Free Electronic Parts. 73, Ellen - AF9J. GE BC-191 Transmitter with Pre-War Command Gear. B & W 5100 Transmitter. The 6L6 transmitter was described in November, 1936, QST. The basic transmitter is listed in the 1940/5th edition of the Stancor Hamanual as the Stancor 10P. A standard 9 volt. A 47-46-10 Transmitter for Four Bands # One of the most popular tube combinations for the low-power transmitter is that incorporating a 47 crystal oscillator, 46 doubler, and 10 final amplifier. A beam tube can be used for many other circuits like oscillators, transmitters and RF amplifiers. Qualified orders over $99 will ship to you without incurring a shipping fee. Also see the original in the Dec 1957 QST p34 by Lew McCoy - Three-Band One-Tube Novice Transmitter. This one-tube transmitter is made with a 6L6 pentode. 6L6/5881 (3 variations known), 6922, 6EU7, 7199, EL84 (2 versions), 6P15P. Motion picture and supper club entertainment had became an unaffordable luxury for many. At the time Philips had already developed and patented power pentode designs, which were rapidly replacing power triodes due to their greater efficiency. The screen is always kept at a high +V. The receiver is a WW2 surplus BC-348. ameco tx-62 ham radio transmitter $ 129. It is built on a 8 x 8 inch baking pan that I picked up at the grocery store for $2. 15 Watts: 23. part: KN 3235B prices Specifications KN 3235B : type: Integrated PA Amplifier; model : KN 3235B; brand: KNIGHT (Allied radio) country/region of. The beam tetrode design of the 6L6 allowed RCA to circumvent Philips' pentode patent. The premier online community for bass players. On Sat, 1 Apr 2006, Dave wrote: > Recently I bought an excellent Drake R4A and am struggling to find a > companion transmitter for it. I used a spray that is called "Hammered Metal" and had a nice antique look. > I just did a Google. A lesser amount of power was available on 10 meters due to doubling in the final stage. The lens of the transmitting antenna can be seen protruding from the back of the bus. 5, RF Shields, RF SHIELD 2. Well the 6L6 has changed over the years, while the 807 never did (except for the 'W' version). 1431 khz ( ) 1431,6. The Icom website lists some vendors, but the radios are available easily via internet. Many amateur radio operators used the 6L6 in class C service for transmitters over the years because it was inexpensive due to mass production, and it could be salvaged from scrapped TV or audio equipment. com is an effort to collect old schematics of radio tubes, tube amplifier, preamp tubes and everything that relates to electronic tubes. One Valve QRP Transmitter 6V6 tube - Duration: 0:47. Tube functions: Crystal oscillator 1 x 6V6 Amplifier and frequency multiplier 1 x 6L6 Power amp 1 x 6L6 Speech amp 1 x 6N7 Modulator 1 x 6N7. Dave recommended the use of our crystals! These crystals were also featured in an 8 page technical report in ELECTRIC RADIO. It can handle up to 30 watts of audio power and since my modulator is generating around 15 watts of audio power it's a good match. 1 Wurlitzer 2x 6L6 Tube Audio Amplifier POWER Transformer Vintage from. 6l6 transmitter. Similar to type 5881. Very interesting to see use two 6V6 tubes for low power hand generator operation and two 6L6 tubes for power pack operation in the same circuit. The 6L6 transmitter was described in November, 1936, QST. VFO or crystal excitation--up to 35 watts input. 57-3901-5607 offered from PCB Electronics Supply Chain shipps same day. It can go almost twice that by pulling out the 0D3, but the keying is not as good that way. regenerative receiver. Two big stumbling blocks had to be worked on: 1) three different high voltage requirements, 815 B+ around 500 VDC, 815 screen around 250 VDC and oscillator B+ around 150-200 VDC and 2) a tendency of the 815 to run off on it's own as a tuned grid-tuned plate. Anyone would care to post smoe part numbers for obsolete (not selling currently) electronic parts, thanks i. 6146B-TAY Transmitting Tube, Beam Power Amplifier, Taylor , 6146B-USA Transmitting Tube, Beam Power Amplifier, USA brand. OnBuy is a UK online marketplace packed with great prices on millions of products from thousands of online retailers. 88813-119HLF offered from PCB Electronics Supply Chain shipps same day. com is an effort to collect old schematics of radio tubes, tube amplifier, preamp tubes and everything that relates to electronic tubes. 6l6 transmitter. 1-5 Watts: 15. Two-Tube CW Transmitter for 80 Meters 6L6 Metal Tube, Pierce, Crystal-Controlled Oscillator Operated at a screen and plate voltage of 255 VDC, Regulated, Driving a 6L6G Glass tube amplifier. What a fun ride that was. The power output is only about 5 watts. Heathkit Sb-221. <20:13:24> "Joe N2CX": It makes a distinctive sound when it "bloops" into oscillation hence their moniker of "blooper". This transmitter is a version of the classical 2 section "Master Oscillator Power Amplifier" design using a 6AG7 pentode in a crystal controlled Colpitts oscillator with an aperiodic (un-tuned) anode load to drive the 6L6 beam tetrode Power Amplifier with a band switched "pi" network output. A pairs 6L6 - $104. One Tube 6L6 Transmitter experiments 6 Having completed my 6L6 project for the time being with no doubt in my mind that I can improve the design still further with improved understanding. EL34 active-loaded (SRPP) parafeed amp experiment. Original AM Micropower Transmitter. This is used for tuning the output circuit. Push-pull KT88/6L6/EL34/2A3/300B amp with "universal" driver / power supply PCB. 6L6 Transmitter A KC5LDO 6L6 Transmitter, W5DXS - Heart Of Texas DX Society Amatuer Radio web page of information about DX, contesting and other Ham related information. Unfortunately, if your power supply is only 12 volts, the currents in your transmitter will be 50 times higher for the same amount of power. 50-60 cycles 100 watts. Popular military surplus AN/ART-13 and Navy ATC transmitter power supply project. Modulator resting current should be set for 65 - 70 mA for 6L6 tube types, 80 - 90 mA for 6CA7 and 90 - 100 mA for the 6550 and 8417. com in a single category. Help w/ 6L6 Transmitter : Page 1 of 2 [ 31 posts ] Go to page 1, 2 Next Previous topic | Next topic : Author Message; filmmaker516 Post subject: Help w/ 6L6. Petersburg Factory originally manufacturing transmitter Valves, was one of the last companies to introduce their version of the 300B. Keying is in the final cathode. Mullard EL84 / 6BQ5 New Production Power Vacuum Tube image #9. 6L6 is the designator for a vacuum tube introduced by Radio Corporation of America in July 1936. A completely scratch built QRP SSB/CW superhet transceiver for 80, 40 30 and 20m based on a symmetrical SA612 circuit. EL34 active-loaded (SRPP) parafeed amp experiment. The 6L6 transmitter was described in November, 1936, QST. Finished 6L6 transmitter. TubeDepot carries a selection of 6L6 / 5881 / KT66 / 7027 Power Vacuum Tubes. Classic Radio Gear & Nostalgia, 6L6 Resurrection, Ingram (K4TWJ), CQ 2004, Oct. (9KB) 9300 RFT Microphone by Neumann:(25KB) This is a hard to find German condenser microphone with three tubes and a Neumann element. Push-pull KT88/6L6/EL34/2A3/300B amp with "universal" driver / power supply PCB. Two years ago I saw Gary's WD4NKA webs site showing a schematic of a MOPA Transmitter, the 6AG7 / 6L6. The glass type 6L6G was also developed for audio amplifier use. Dimensions: Transmitter unit - 12 in Wide x 6. Merit CTC Coil 2 from Western Era A-3013 Amp Voice Electric 5w Transformer Tube Tube Electric Transformer 5w Merit A-3013 Era Amp Western CTC Voice 2 Coil from. This was one of the transmitters I considered back in the late 50s, when I thought about upgrading from my 6L6 single tube 80/40 rig. This has nothing to do with radio astronomy. K1RID's 6L6 CW Transmitter from QST: "Barracks Bag VFO" A new old thermatron device is coming to life on the kitchen table of K1RID. The transmitter power transformer is a Stancor P4004 (175 ma DC rating) rather than the larger 200 ma rated Triad R-121-A. The Heathkit Model AT-I Transmitter was designed to provide both the beginning and experi—; enced amateur with a simply constructed yet versatile kit form transmitter at modest cost. The system includes the transmitter, receiver and all necessary accessories including antennas, guitar cable, power supply and batteries.