[1000mp] AW: Different frequency response in USB and LSB

[Pete Smith]

My menus all show zero difference from the baseline settings, so unless the 
baseline settings are wrong....  I'll try the reset as you suggest.

73, Pete

At 12:41 AM 10/24/2007, you wrote:
>Pete,
>
>as far as I remember (can't have a look into the manual at this moment), ALL
>frequencies are adjustable by software in the menu. So probably try a
>factory reset first, to see, if something was disadjusted accidentally or
>whether the problem still exists after the reset.
>
>73 from Germany
>Uwe, DL8UF
>
>
>-----Ursprüngliche Nachricht-----
>Von: 1000mp-bounces at mailman.qth.net [mailto:1000mp-bounces at mailman.qth.net]
>Im Auftrag von Pete Smith
>Gesendet: Dienstag, 23. Oktober 2007 20:39
>An: All about Yaesu 1000mp
>Betreff: Different frequency response in USB and LSB
>
>I just focused on something that I think has been happening with my Mk 5
>since it was a pup.  Listening with the stock 2.4 KHz filter, and no
>antenna on the radio, the background hiss/noise is a noticeably different
>pitch on LSB than on USB.  That says to me that the suppressed carrier
>frequency is offset from the filter passband by a different amount in the
>two modes.  This observation is supported by viewing a waterfall display in
>mmtty; I can see that one sideband has far more rolloff than the other at
>higher frequencies, within the filter passband.
>
>The radio now has the Inrad roofing filter in place; as I say, I *think*
>the pitch difference was apparent before I installed it, but one person has
>suggested that the roofing filter's center frequency and/or passband shape
>may be responsible.  I suppose I can temporarily remove it and see, or is
>there an easier way?
>
>
>73, Pete N4ZR
>
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