|
Title: 805 linear amplifier?? Post by: KE6DF on August 14, 2021, 10:19:58 PM I have a several 805 tubes and wondered if they could be used to build a linear.
I know there are many articles around for lineard with a pair of 811a tubes. Perhaps a grounded grid, cathode driven design with a pair of 805s. Does this make any sense? Issues? Title: Re: 805 linear amplifier?? Post by: Opcom on August 18, 2021, 11:33:44 PM Well, they have Class B RF amp spec in the tube manual, and also have same modulator specs. Why not?
good datashet with audio and RF class B operating conditions. https://frank.pocnet.net/sheets/049/8/805.pdf Would grid lead inductance cause issues with grounded grid service on the higher HF bands for this 1936 tube? Title: Re: 805 linear amplifier?? Post by: w7fox on August 19, 2021, 08:51:43 AM Looks like you could get about 100 watts per tube as an amplifier, but it would be easier with 811s in GG. A pair in class B modulating a pair in class C would make a nice 200 watt AM transmitter. Don't know the upper freq. it would work at though. AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
|