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

[Harold Mandel]

Gentlemen,

My MP does the same thing, exactly.

However, only the Main Rx displays a tone change
when switching between USB and LSB, not the
Diversity Rx.

Hal Mandel
W4HBM 

-----Original Message-----
From: 1000mp-bounces at mailman.qth.net [mailto:1000mp-bounces at mailman.qth.net] On Behalf Of Pete Smith
Sent: Wednesday, October 24, 2007 7:33 AM
To: All about Yaesu 1000mp
Subject: Re: [1000mp] AW: Different frequency response in USB and LSB

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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