[Amps] TL922A recommended mods?

[Mike Tubby]

On 14/08/2012 14:35, Jim Garland wrote:
> A friend has a recently acquired lightly used TL-922A that is unmodified and
> works perfectly on all bands. He has asked me to replace the clunky T/R
> relay with a quieter & faster vacuum relay, and also to install a solid
> state relay to take the burden off the power switch.  I'm not familiar with
> this amplifier, but from looking at on-line postings it appears to be an
> amplifier that owner's can't keep their hands out of! I've never seen such a
> hodge-podge of proposed modifications, some of which strike me as bizarre,
> others of which purport to improve on the original design, but which appear
> to be mostly preventative maintenance rather than solutions to actual
> problems. Still other mods probably work just fine, but are hard to install
> and require complicated circuitry.  So, my question is whether anyone can
> recommend a simple way to swap out the noisy antenna relay and take the
> burden off the main power switch? I'm particularly interested in the
> mechanical layout, routing of wires, etc.  I've not looked inside the
> amplifier yet, but from photos it appears to be rather difficult to work on.
>
>
> Thanks!
>
> Jim W8ZR
>

Good sources of information include:

http://pa0fri.home.xs4all.nl/Lineairs/TL922/tl-922eng.htm

and:

http://www.vk2fc.com/tl-922mods/


Mike G8TIC