[Milsurplus] APN-9 Question

[Antonio Amandio Sanches de Magalhaes]

John,

I have on my attic two APN-9 receivers. One of them was still in
apparently good condition, if I still remember of it. The other
could be taken as a "parts mule". I don't remember if they are
straight 9's or 9A's. Should you consider it useful, I will inspect
them yesterday. What are the relevant aspects that you are seeking for?

Best regards,
Antonio
CT1TE

---
Antonio A.S. Magalhaes

Em 2012-05-15 22:00, J. Forster escreveu:
> Has anybody taken appart an APN-9 to service it?
>
> Background: I just got my very, very rare APN-9A. I am convinced the 
> unit
> was built by taking a standard production APN-9 and removing the 
> analog
> (charge pump)timing dividers and installing a tube digital retrofit.
>
> Further evidence is the original parts are MFP, the added subassembly 
> is
> not. In addition there are a couple of cables with MRAC connectors. 
> Also,
> the front panel of the APN-9 has been cut out and an APN-9A assembly
> installed.
>
> The problem is, I've spent several hours trying to remove the digital
> section without any success at all.
>
> Any ideas?
>
> -John
>
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