432 MHz Kilowatt + Amplifier with a GS35b.
The Russian VHF triode GS35b is specified to operate
up to 1000MHz rated 1.5kW anode dissipation but the tube
geometry makes the construction of a compact, stripline amplifier
very difficult. Considering it's low price and availability
I put some effort in the devlopment of a powerfull compact amplifier
with the GS35b for 1.5KW (and over) output power at 432MHz.
Used in heavy EME since Mar. 1995
The outside look:
The plate cabinet:
The cathode cabinet:
If you want to know all about this design, download here my article
as published on DUBUS 4/96:
"Yet Another kW Amplifier for 432 MHz"
Reproductions of this design by: DL6NAA, KA0RYT
and DL3IAE with good results. Also under test at F5PMB. Any others ?
The input circuit was also used by DL4MEA in his
70cm GS35b Amplifier.
If you know of any other hams with this design let me know: