[GreenKeys] PK-232

[John Lawson]

Greetz Keith!

I’ve had maybe a dozen of them over the years; I bought serial number 79 from Henry Radio in LA in the 80’s – the 1st 100 or so were made in Washington before AEA switched production to Asia (Hong Kong IIRC).

Here is the Manual,  the schematics, parts layout, and parts list is at the back of it.

Hope you can make some headway with one of them…

Cheers
John KB6SCO
Carson City NV

From: greenkeys-bounces at mailman.qth.net <greenkeys-bounces at mailman.qth.net> On Behalf Of Keith Densmore via GreenKeys
Sent: Wednesday, September 23, 2026 10:15 AM
To: Greenkeys <greenkeys at mailman.qth.net>
Subject: [GreenKeys] PK-232

Greetings All,
I have the (mis)fortune of owning 4 AEA PK232  modems, all now unworking.  I use them to convert 45 baud baudot into ASCII for my 1980's terminal.

All four have similar symptoms--they communicate ok to the ASCII terminal but are no longer able to read or process the audio tones from ITTTY.

Just wondering if any member has experience servicing these devils. Perhaps there is a common mode of failure somewhere in the audio chain. Or am I looking at replacing all the electrolytics? Thanks for any advice.

Keith ve3gem

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