On 1/7/25 3:28 AM, Lukasz wrote:
I'm currently working on final touches of restoring an old military tube HF
amplifier that has very useful mechanical memories. It's constructed in a
way that there is no need to retune within the same ham band (except the
top of 10m, mind this is Europe so 80m is much shorter here). Which makes
it very nice for remote work.
I'm thinking about adding these capacitors as 100nF or 10nF (depending
which one will fit) smd parts right between the base and emitter the pads.
Do you think that will work? If not, what would you do?
73,
Łukasz - SP4IT
The trick is to make the input to the problem relays to require POWER to
activate them. Feed a high current to those channels and drop the input
resistor divider down to the hundreds of Ωs.
Ron W4BIN
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