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Date: 6 Aug 2001 09:30:47 +0100
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From: "Andrew Talbot" <ACTALBOT@dstl.gov.uk>
To: rsgb_lf_group@blacksheep.org
Subject: LF: RE: <TECH> RA1792
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All the RA1792s I have seen (admittedly all of the same vintage,
manufactured within a couple of years of 1981) use a 455kHz 2nd IF.  But
since they also only have 10Hz steps there is obviously a later version, so
it is possible later models could have a 100kHz output.

As for the random parameters junmping...   The Rx uses battery backed up RAM
for non volatile parameter storage, and the NiCd battery will eventually
give up, so you could try replacing this - they are cheap enough to just
try.  On the receivers I have seen, this it is mounted on a PCB  on the
right hand side of the chassis when you open up the top of the unit.  But I
suppose that over the years things could have changed and it could be on the
more difficult to get at front panel PCB.

Andy  G4JNT


> -----Original Message-----
> From: Brian Rogerson [mailto:brian@esoterica.pt]
> Sent: 2001-08-06 08:45
> To: rsgb_lf_group@blacksheep.org
> Subject: LF: <TECH> RA1792
> 
> 
> To All,
> 
> The manual I eventually had to buy for the RA1792 and supposedly for
> this particular model shows that the main IF output (J2) is on 455KHz.
> It seems to be on 100KHz.  Can anybody throw any light on the subject?
> 
> I didn't receive any replies on the random jumping of parameters so I
> have to assume that this is not a widespread problem with a routine
> solution.
> 
> With thanks in advance, 73, Brian  
> 73 Brian     CT1DRP     IN51QD     41 09 58N  08 39 11W
> http://homepage.esoterica.pt/~brian
> 
> 


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