[amsat-bb] Fw: 2M desense on Icom IC-9700

[KI7UNJ Tucker]

I have to say I'm not getting desense with my IC-9700,  unless I'm using
more power than is needed or should be using on the SSB Sats.

Maybe try to lower your power? RS-44 can easily be worked at around 2% (2w)
power and I work SO-50 at 0-3% every time (500mw-3w)

On Wed, May 6, 2020 at 6:52 PM Kevin via AMSAT-BB <amsat-bb at amsat.org>
wrote:

> Jerry,
>     Comparing the 9700 to my 9100 I also noticed that it was much more
> prone to desense, it was not as bad here as what you are seeing but it
> was there, same antennas here BTW.
> The desense with the lack of 9600 packet support made it easy for me to
> go back to my 9100 and sell the 9700. Had I kept it my next plan was to
> put a diplexer in line on the 70cm side with a 50 ohm load on the 2m
> port, this would probably be your best option and putting it before an
> external preamp would also be best if you are using one.
>
> 73
> Kevin WA7FWF
>
> On 5/6/2020 6:18 PM, BeetleJerald Oliver via AMSAT-BB wrote:
> >
> >
> >     ----- Forwarded Message ----- From: BeetleJerald Oliver <
> revjwo at att.net>To: amsat-bb at amsat.org <amsat-bb at amsat.org>Sent:
> Wednesday, May 6, 2020, 02:55:41 PM CDTSubject: 2M desense on Icom IC-9700
> >   I just replaced my Yaesu FT-847 with the Icom IC-9700.  I am having
> problem with 2M uplink overloading (desense) the 70CM downlink, resulting
> in not being able to use RS-44, FO-29, or SO-50.  It is the same antenna
> system that I used with the FT-847 and I experienced no problem at all with
> the FT-847.  SWR on both VHF/UHF is quite low using M2 CP yagis on
> fiberglas boom, 11 feet apart.  I have the problem whether I use the
> preamps, or not.  Even at 5W out, it is quite noticeable. Anyone else had
> this problem?
> > KJ4EU    Jerry
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> _______________________________________________
> Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
> expressed
> are solely those of the author, and do not reflect the official views of
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-- 
*Casey Tucker  KI7UNJ*
https://twitter.com/KI7UNJ