[Premium-Rx] SRT CR302A EJ KANB 301A

[John Graham 02]

Karl-Arne,

Many thanks for the pdf of the RA722 manual, which contains exactly the diagram that I need to fix the continuous tuning fault on my SRT307A - on the very last page!
I think I can make sense of the Swedish - I lived in Norway for a few months and there is quite a lot of similarity - but an English version would certainly make life easier.

I found your article in ESR Resonans very interesting, too.

thanks again,

John G.


Message: 4
Date: Mon, 24 Jun 2013 21:26:30 +0200 (CEST)
From: Karl-Arne Markstr?m <sm0aom at telia.com>
To: <zpz at gmx.de>, premium-rx <premium-rx at mailman.qth.net>
Subject: Re: [Premium-Rx] SRT CR302A EJ KANB 301A

Hello,

The CR301 will give audio output from the Channel A or USB channel 
when set to ISB mode.
However, if the Channel B button is pressed, there will be no sound, 
as the LSB IF channel is unpopulated
(there is actually an empty box in the IF section of the receiver).

Unpopulated slots can have several reasons.

One is the lacking ISB audio amplifier, one is the optional FSK 
demodulator or remote control switching cards.
It seems that the improvised decade counter board uses one of the 
spare remote control card slots.

Regarding a manual, it presents a problem to scan or copy them, as 
they are a binder 6 cm thick.
I would look out for a spare English language manual if I manage to 
find one somewhere.

Here is a link to the Swedish language military manual 

http://www.sm7ucz.se/Ra844/Ra722.pdf

I have worked professionally with these receivers (and their 
successors CR90 and CR91)
in civilian and military systems since the early 80's, and still 
maintain a handful of CR302's
for a customer.

73/
Karl-Arne
SM0AOM