Can anyone point me to an appropriate solid-state exciter circuit for my 2E26?
"Richard" wrote in message
...
I want to homebrew a crystal controlled (or VXO) CW Tx, (capable of
break-in
operation) that employs a 2E26 tube in the PA. With ICAS operation I can
get
27 watts of RF out with a driving power of 0.17 wattts (according to my
RCA
sheet). I want most of my "design" efforts and interest to centre around
the PA stage. I think I could cope with that at least.
Can anyone please point me to a suitable solid-state exciter circuit? I
want
the Tx to cover any HF band (I'll use plug-in coils). TIA.
Why solid state? Since you're using the 2E26, you already need a high
Voltage supply, and a single stage crystal oscillator can operate from the
same supply without the need for a low Voltage supply for a multistage solid
state exciter. (It's gonna take more than one to get where you want to be.)
A tube crystal oscillator can be found in most old ARRL handbooks, using a
5763 or similar tube. Or, even a 2 stage oscillator buffer/multiplier
utilizing a triode/pentode 6EA8 or similar.
W4ZCB
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