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A 2x 2*2C39 Power Amplifier for 1296MHz - 23cm
https://www.qsl.net/dl4mea/23c39/23c39.htm
A 1296MHz 2* 2*2C39 Power Amplifier Including Description Of Construction (C) DL4MEA 02/1998 18.02.1998 creation 09.07.1998 RIG pictures added 14.09.1998 Added the description about building it D: Zwei gekoppelte Endstufen mit jeweils …
2C39 PLATE VOLTAGE -VOLTS CONNECTION ID …
http://tubecollectors.org/eimac/archives/2c39(46).pdf
The grid of the Eimac 2C39 in a ring interposed between the plate and heater terminals, and the heater and cathode are provided with a concentric. cylindrical stem strue- ture, Facilitating its use in "grid isolation" amplifiers cavity-type tank circuits. GENERAL CHARACTERISTICS 2 c 39 HIGH-MU TRIODE 2.75 .26 2.8 MAX. MAX. MAX. MAX MAX. MAX inches
World Tube Company: 2C39A / 2C39 Tube ( NOS ) EIMAC
https://www.worldtubecompany.com/mm5/merchant.mvc?Screen=PROD&Store_Code=WTC&Product_Code=2C39AN&Category_Code=
It is a popular tube for mobile transmitters and telephony made in the late 1940's & early 50's. It is also used in vintage military signal generators such as the AN/USM-16 10-440 MHz. The Eimac 2C39A Vacuum tube is a forced-air-cooled type used as a RF power amplifier, oscillator, and frequency multiplier.
RF HAMDESIGN - 2C39 Bias Circuit
https://www.rfhamdesign.com/products/1296mhzamplifier/biascircuit/index.php
RF HAMDESIGN and Whatsapp: WhatsApp: +31 650 882 889 (NO TECHNICAL SUPPORT QUESTIONS ! ) Important: before contacting us: Only during business hours, only in english or Dutch, only for sales matters. For technical questions, technical support matters please contact us by E-Mail, see our contact RF HAMDESIGN page. Please allow a delay of 15 minutes for the …
2C39A as the Output Tube | diyAudio
https://www.diyaudio.com/community/threads/2c39a-as-the-output-tube.346709/
Some "transmitting" tubes are great for audio usage (let's be honest, the 845 is practically useless for RF anyways), but some tubes like the 3-500Z, 2C39, 4CX series, etc. are not a good choice for audio. In general, if it needs forced-air cooling, it's not a good choice for an audio amp for that reason alone.
200w 23cm Amplifier - W6PQL
https://w6pql.com/200w_23cm_amplifier.htm
If you have a 2C39 or a 7289 in the parts box, you can build the cavity for this amplifier from the plans in the ARRL Handbook. The original cavity design article was written up in the 80's by Chip Angle, N6CA. Because the documentation in the handbook is adequate, I won't go into it's construction here except to say that
2C39A as the Output Tube | Page 3 | diyAudio
https://www.diyaudio.com/community/threads/2c39a-as-the-output-tube.346709/page-3
Linearity is a function of the circuit configuration, including whether it is broadband or narrowband (audio is broadband, does not use pi filters, etc.). The difference between a UHF oscillator or a UHF amplifier is the former has positive feedback (whether intentional or un-intentional). I'm just sayin'
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