[MRCA] T-195B update

[Dennis DuVall]

Transistorized chopper circuit sown on page 1-51 , TM 11-5820-335-35.

Robert — Are you sure the chopper you have is “dead"?  I’ve never had to replace one of these things.  

Dennis D.  W7QHO
Glendale, CA

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> On Sep 28, 2015, at 6:43 PM, grasshopper <grasshopper at epix.net> wrote:
> 
> Bob,
> Which manual version is it with the solid state replacement?
>  
> Steve, kd3ht
> From: mrca-bounces at mailman.qth.net [mailto:mrca-bounces at mailman.qth.net] On Behalf Of Robert Newberry
> Sent: Monday, September 28, 2015 8:14 PM
> To: mrca at mailman.qth.net
> Subject: [MRCA] T-195B update
>  
> I thought it would be a good idea to start a new thread. Some really good back and forth came out of the voltage thread. 
> 
> I had a crack at it again today and focused on the servo amplifier module. I checked the tubes and found one of the 5751 bad. I also pulled the chopper and setup it up on the bench and attempted to observe the output on my scope. It's dead. Considering it's mechanical, it's age and how it works I'm not surprised it's failed. There is a schematic in the manual to make a solid state one. So tubes and parts and then we'll go from there.
> 
> N1XBM
> Apparare Scientor
> Paratus Communicare
> Allstar Node # 27086, 41540, 41812, 42086
>     
> 
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