Re: [Amps] QSK for TL-922

[R.Measures <r@somis.org>]

On Oct 19, 2004, at 4:33 AM, QSKguy@aol.com wrote:

> Hello,
> I just bought an used TL-922 to get QRO and would like to use it in 
> QSK mode.
> I found the Richard Measure interesting site explaining how to modify 
> the
> TL-922 but I don't really understand.

-  Two high-speed, SPST RF relays are used to replace the stock, pokey, 
DPDT original T/R switching relay.  An electronic cathode bias switch 
is used to replace the bias switching relay next to the fan.  ///  note 
-- the reason that a SPST vacuum relay is required to switch the output 
is that no DPDT vacuum relay is fast enough.

> Is there some TL-922 / QSK owner over there who can explain me how to
> integrate this kit in an unmodified amp ?

Make a bracket to hold the 2 RF relays, mount the relays with Silicone 
rubber adhesive as per  <http://www.somis.org/relay-mtg.html>, allow to 
cure a day or two, remove the original 2  relays, connect the Fig 7  
<http://www.somis.org/HSS-diagram.jpg>  circuit and the new relays to 
the points indicated.

> A schematic would be great too.
> Thanks a lot.
>
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Richard L. Measures, AG6K, 805.386.3734.  www.somis.org

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