Vic..
I have QSK and step start boards available. I also replaced the
incandescent lamps with LEDs on the meters and the T/R indicators.
See...
http://www.w0lx.com/ccportals/TL922APage3/tabid/218/Default.aspx
For pictures also see:
http://s900.photobucket.com/albums/ac206/w7ry/QSK%20Modifications%20to%20my%20TL-922/
Email me for prices.
73 Jim W7RY
> --------------------------------------------------
> From: "Vic K2VCO" <k2vco.vic@gmail.com>
> Sent: Saturday, August 13, 2011 2:22 PM
> To: "Amps reflector" <amps@contesting.com>
> Subject: [Amps] TL-922 --> 21st century
>
>> I have a stock TL-922 that I want to update. I'm going to do the
>> following:
>>
>> -- step start
>> -- vacuum relay QSK
>> -- automatic bias switching to cut off tubes when not keyed
>> -- check / adjust filament voltage
>> -- replace VHF choke in plate circuit with glitch resistor
>> -- improve bypassing of HV and filament power leads
>> -- no, I'm not doing anything to the parasitic suppressors except
>> checking the resistors!
>>
>> A question:
>>
>> The grids are grounded via a parallel combination of 3 220 pf capacitors,
>> a 4.7k resistor
>> and a 470 uh choke. I don't understand this. I am tempted to just strap
>> the grids to
>> ground. What were they thinking?
>>
>> --
>> Vic, K2VCO
>> Fresno CA
>> http://www.qsl.net/k2vco/
>> _______________________________________________
>> Amps mailing list
>> Amps@contesting.com
>> http://lists.contesting.com/mailman/listinfo/amps
>
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