I had a similar problem with my 1000D. But it was only
strong signals. Ended up finding the Tx PIN diode was
messing up the input to the receivers. Replaced it with a
1N4007 power supply diode. It's been fine since.
Check the diodes towards the front end. I actually found
just an ohm meter.
On Fri, 17 Feb 2006 13:08:35 -0500
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> 1. MkV RX Problem (Charles Bibb)
>Date: Thu, 16 Feb 2006 15:53:33 -0600
>From: Charles Bibb <firstname.lastname@example.org>
>Subject: [Yaesu] MkV RX Problem
>Content-Type: text/plain; charset="us-ascii";
>Got my Mark V back from Yaesu service about two weeks
>ago. Had no power
>output after a nearby lightning strike. Turned out to be
>a few blown diodes
>and caps; relatively minor. Turn around time was almost
>exactly 2 months.
>Now, however, I'm noticing a new problem, this time with
>the RX. When
>strong signals are present, I hear copies of them at
>11-13 khz above and
>below the actual signal. Usually it is at 11.6 khz either
>side of the real
>signal, but varies a little by band. It is present when
>using any of the RX
>antenna jacks, "A", "B", or the separate RX antenna jack.
>any external devices in the line as the cause, so it's
>inside the Mark V.
>Does anybody know what this is?
>This screwy RX behavior did not occur before the TX
>failed, but may have
>been present when I sent it out to Yaesu. I was so
>involved with the TX
>problem that I didn't do any rigorous checking of the RX
>because it seemed
>fine just tuning across the bands. Just in case, I asked
>Yaesu to check out
>the RX and they said they checked and aligned it and that
>fine. This, however, it NOT fine.
>I first noticed it on 20 meters SSB while working the
>3Y0. I was using dual
>RX at the time and began hearing some of the stations
>calling the 3Y in the
>LEFT earphone. Now, I know the audio from both the main
>RX and sub RX is
>mixed, with the main appearing mainly in the left
>earpiece and the sub
>appearing mainly in the right earpiece (the way I had the
>menu set), but I
>was hearing the calling stations in BOTH. After further
>checking on CW, I
>found what was really happening. Filter positions don't
>seem to affect
>it. Receiver performance seems fully up to specs, except
>for the "extra"
>signals. Curiously, it doesn't seem to happen on 160 or
>80. I have heard it
>on 40, 20, 17 and 15 meters.
>Has anyone else had this problem? Am I about to have to
>ship it back to
>Charles - K5ZK
>Yaesu mailing list
>End of Yaesu Digest, Vol 38, Issue 10
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