[Milsurplus] OK Smart People: Mystery Cap

[mac]

Improves the frequency response of the modulated PA on the higher  
voice frequencies.  Counteracts the increased attenuation by the  
screen bypass capacitor (2) of the higher audio frequencies  applied  
to the screen grid under modulation.


Dennis D.  W7QHO
Glendale, CA



On Sep 30, 2011, at 8:02 PM, David Stinson wrote:

> Here's a functional diagram of the PA of
> the transmitter section of the TR9D rig:
>
> http://home.netcom.com/~arc5/tr9dpa.jpg
>
> Cap 1 is input coupling.
> 2 is screen bypass
> 3 is plate bypass.
>
> Why is the screen dropping resistor bypassed with 4?
> Value is .01 uF.  Resistor is 20K if that matters.
>
>
> ______________________________________________________________
> Milsurplus mailing list
> Home: http://mailman.qth.net/mailman/listinfo/milsurplus
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Milsurplus at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html