[Amps] TL-922 --> 21st century

[Jim W7RY]

I have QSK and step start boards available.  See...
http://www.w0lx.com/ccportals/TL922APage3/tabid/218/Default.aspx



Email me for prices.

73 Jim W7RY



--------------------------------------------------
From: "Vic K2VCO" <k2vco.vic at gmail.com>
Sent: Saturday, August 13, 2011 2:22 PM
To: "Amps reflector" <amps at 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 at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps