The HC-1 is a SPDT relay, which means it only switches one RF path
(usually output RF). Most amps using a vacuum relay at output use a smaller
and faster relay on the input (also a SPDT). The input RF path and output
RF path both have to be switched.
If the Yaesu amp uses a big, slow DPDT relay to switch both in and out RF
paths, you can't just replace it with a single vacuum relay. You would need
to install 2 of them, and then most amps using the vacuum relays have some
means to prevent hot switching them as well.
On Wed, Dec 22, 2010 at 4:38 PM, al sirois <firstname.lastname@example.org> wrote:
> Can I replace the relay in a FL-2100-B with this Kilovac Mod HC-1
> To achieve QSK? I would be exciting the amp with a TenTec #538 Jupiter.
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