25-02-2015, 08:12 PM
Those dinky little Russian valves mentioned by Nick, which seem to abound at giveaway prices, fascinate me, as do Acorns.
Surprised more hasn't been done with them. I think the 'rod pentodes' as they';re sometimes called, as very fussy about the filament Voltage 1.2V I believe, and not a penny more.
As to TV valves, PL509s and other line output valves have often been used as transmitting PA valves in amateur radio equipment, both home-brew and commercial.
Surprised more hasn't been done with them. I think the 'rod pentodes' as they';re sometimes called, as very fussy about the filament Voltage 1.2V I believe, and not a penny more.
As to TV valves, PL509s and other line output valves have often been used as transmitting PA valves in amateur radio equipment, both home-brew and commercial.
Regards, David.
BVWS Member.
G-QRP Club Member 1339.
'I'm in my own little world, but I'm happy, and they know me here'
BVWS Member.
G-QRP Club Member 1339.
'I'm in my own little world, but I'm happy, and they know me here'
