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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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In Reply to: Hmm, got an 807 amp I built years ago, ran it 24/7 for 3 years, there ARE different ways to build_nT posted by Cleantimestream on February 16, 2024 at 09:42:19:
As a kid I would frequent a local electronics surplus store where they had several huge hot-tub sized wooden crates full of vacuum tubes. One crate was filled with 807 and some other large octal types. They also had shelves full of surplus AN/ARC-5 HF aircraft transmitters that also used 807 tubes. Those tubes were everywhere and they were popular among DIY Ham Radio operators going back to WWII.As a Ham Radio operator I had a homemade HF [3 - 30 MHz] transmitter that my uncle built. It was my first transmitter after getting my Ham Radio license as a Jr. High School kid in the 1970's. It used two 807 tubes in the power amplifier final RF output stage. I used that transmitter for CW [Morse Code] operation and made contact with Hams all over the world including Europe, South America, Japan, Australia, various islands in the Pacific, and Palmer Station Antarctica. I had that transmitter for over 2 years and used it daily without a hiccup never having to replace any of the tubes. That transmitter was replaced with a commercial radio transceiver that used TV horizontal sweep tubes (6LQ6) in the RF output stage. Those weren't nearly as rugged but were OK for relatively low duty cycle use [CW and SSB].
I've seen a couple audio power amps based on the 807 output tube but never heard one.
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Follow Ups
- Bags of 807's by the pound everywhere.... - AbeCollins 02/16/2412:14:25 02/16/24 (1)
- RE: Bags of 807's by the pound everywhere.... - Cleantimestream 12:35:44 02/16/24 (0)
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