Re: [amsat-bb] Help with rig problems

["KC6UQH" <kc6uqh@xxxxxxx>]

Jess,
I have a cross to a ECG872 It indicates that it is a VCR Double Balanced
Mixer. You might want to try a VCR shop or Mouser for the ECG part

Art, KC6UQH

 ----- Original Message -----
From: <w4mvb@juno.com>
To: <amsat-bb@AMSAT.Org>
Sent: Monday, November 08, 2004 11:31 AM
Subject: [amsat-bb] Help with rig problems


> Good afternoon to the group,
>
> Since the FT-107M is the IF for my satellite station I'll stretch a point
> and consider this message relevant to this forum.  I'm working on my old
> FT107M transceiver and I think it has a bad HF OSC/VFO mixer IC - a
> SN76514N.  There is very little output from the IC but the inputs seem
> OK.  The part is no longer available form Yaesu.  All my life (or most of
> it anyway) I have known (or thought) that the SN76514 was the same as an
> LM1496 (plus 1596 and others).  I can also find several sources on the
> Internet that indicates they are the same.  I ordered one and installed
> it but it doesn't work at all. (The SN76514 is working a little.)
> Thinking that I might have gotten a bad one I found some on ebay and
> bought them.  They didn't work either.  Comparing the schematic of the
> FT107M to the LM1496 data sheet indicates to me that there is no way
> these two devices can be the same!
>
> The SN76514N is apparently used in the TS-700 and the FRG-7 and I'm sure
> there are others.  Has anyone out there been down this road or can point
> me to a source where I can find a SN76514N or at least a data sheet for
> it?
>
> Thanks de Jess - W4MVB
> ----
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