[WRL] PC-81 and PC-91 Couplate Diagrams

[N4BKT William Laakkonen]

I believe the diagrams for the PC-81, PC-91 and more couplates can be found 
here:

http://www.amwindow.org/tech/htm/couplate.htm

Just right click on the images or save the page locally.

73
Bill Laakkonen
N4BKT

Check out the new WRL
(World Radio Laboratories) Web site at
http://www.worldradiolabs.com/
A complete ham community site for
Boat Anchor & Tube radio fans.

----- Original Message ----- 
From: "Larry Rau" <captainlarry at jps.net>
To: "WRL List" <wrl at mailman.qth.net>
Sent: Friday, November 05, 2004 1:06 AM
Subject: [WRL] PC-81 and PC-91 Couplate Diagrams


>I have the internal diagrams and parts values for the PC-81 and PC-91
> pentode and triode coupling networks.
>
> I will try to scan these this week-end.
>
> Somebody email me with a heads up... is it permissable to send a Jpeg as 
> an
> attachment to this group ?
>
> If not.. I can do it as a list.
>
> Bascially each one contains a screen resistor and bypass, a plate load
> resistor
> bypass for hi-cut, a following stage grid resistor similarly bypassed for
> hi-cut, and a coupling cap in between.
>
> The triode version has no screen resistor of course.
>
> Values are pretty standard... as found in ARRL charts.
>
> The exception being  the 250 pf bypasses to limit hi frequency response
> somewhat.
>
> I havent found a bad one yet...
>
> But radios are like cats, You never know where they've been.
>
> Larry W6WUH
> captainlarry at jps.net
>
>
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