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Old September 16th 04, 10:27 AM
Ralph Mowery
 
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"Andrew VK3BFA" wrote in message
om...
A subject got sidetracked a while ago, with numerous people getting
nostalgic about the boxes of old 807's they had sitting around waiting
to be used - has anyone built a HF linear using these things - and not
QRP or max 100watts - found one reference to 4 of them in // giving
250 watts - getting there , but a bit more power out, perhaps? - any
pointers to info or sites - there MUST be a use for these things, I
have been hoarding them for 30 years now!
73 de VK3BFA Andrew


About 25 years ago a place was maiking 27 mhz CB amplifiers using them in
combinations of 4 to 12 of the 1625 tubes, the 12 volt version of the 807.
They would put out about 25 watts of carrier for each tube used. The
circuit used was push pull. It seemed to be a copy of a design in a very
old QST (maybe a 50's version ) design . I don't know how clean the output
was but the amplifier sounded fine on the receiving end. I would guess that
for ssb you could push the output to 3 or 4 times this ammount.


 
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