[Drake] TR7 PA problem: solved!

Garey Barrell k4oah at mindspring.com
Sun Feb 13 18:22:04 EST 2005


Guido -

So there were no defective components, just poor solder joints. ??

Make sure the CW sidetone level control is not turned all the way 
down.   Accessible  _through_  the Key jack on the rear panel.

73, Garey - K4OAH
Atlanta

Drake C-Line Service Manual
<http://hr99.home.mindspring.com/R-4C_Servicez/>



ik2bcp - Guido Tedeschi wrote:

> The TR7, I have here to repair, is now putting all the correct  power 
> into antenna!
> After I resoldered all the transistors and suspect components on PA 
> board and correctly adjusted the pre-driver trimmer, now the radio is 
> pushing 110W on 10m and even more power on lower bands.
> I want to thanks all the people of this marvelous mailing list for the
> valuable help received.
> 73 and thanks
> Ciao
> Guido, ik2bcp
>
> P.S. It remains another problem, missing sidetone on CW, but I write 
> another
> message ;-)
>


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