[Collins] Help with 75A4 parts location

[Joe Eide]

Hi John,

With the front of the radio facing your left  (laying on it's side) :

C102 is connected to the ground terminal on the front terminal strip 
(lug that is bolted to the chassis).
The other end of C102 is connected to the bottom terminal on the strip 
just to the right of V22.  There is a 100K resistor (R76) running from 
pin 1 & 7 of V22 to this point also.

In early serial numbered A-4's, C102 was a smaller sized .1 mfd and can 
be confusing when you don't see the two big solid colored paper caps in 
that area.

Hope that is what you are asking for.

73,

Joe - KB9R


On 11/5/2010 9:24 PM, John King wrote:
> If you have access to the under chassis of a Collins 75A4, i need to ask you to assist me with the location of a specific capacitor in my 75A4.
>
> I have the manual with the parts location pictorial, but the part is sandwiched with several others so that the pictorial does not help.
>
> I need to locate the physical attachment points of C102,a 1MFD @ 200wv. capacitor. I know the general area it is to be mounted, but I need to know what terminals on two terminal strips it is mounted on.
>
> If you can assist, it will be greatly appreciated. Please email me directly. Thanks for looking for me. 73, John, K5PGW
>
>
>
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