[ICOM] 756Pro Alinement

[Ron Lowrance, K4SX]

Ken,

This may be an IF filter problem.  The IF shift via the LSB or USB filter
may be your problem and alignment may fix it but possibly not.  I would
contact ICOM and send it back to them for repair.  I would not take advice
from "shad-tree-mechanics".  My opinion.  These radios are very complex and
what may work typically on one radio may not work on the Pro,

Ron Lowrance
Cumming, GA

http://www.k4sx.com



----- Original Message ----- 
From: "Ken" <k9fv at highstream.net>
To: "ICOM Reflector" <icom at mailman.qth.net>
Sent: Tuesday, May 25, 2004 9:02 AM
Subject: Re: [ICOM] 756Pro Alinement


> Good morning Ron, and thank you for your response.
>
> You are correct, the signal will shift when switching from AM to LSB and
to
> USB, but it should shift the same amount - it doesn't.  It's only a small
> amount, but you can actually tell it from the bandscope, but hearing it is
> more telling.  For normal CW (or SSB) it's not enough to cause a problem,
> but when working the digital modes, it is more telling.
>
> Any ideas?
>
> Ken
> ----- Original Message ----- 
> From: "Ron Lowrance, K4SX" <k4sx at akorn.net>
> To: "ICOM Reflector" <icom at mailman.qth.net>
> Sent: Tuesday, May 25, 2004 7:52 AM
> Subject: Re: [ICOM] 756Pro Alinement
>
>
> > When tuning the WWV signals on 5, 10, and 15MHZ the typical mode is AM.
> You
> > will notice that the AM signal is centered on the center line of your
> > display.  When you change to LSB the signal will shift one direction and
> the
> > opposite for USB.  If I understand your question correctly and your
radio
> is
> > behaving in the manner just described, so your radio is operating
> properly.
> > If I missed your point please send me an email.
> >
> > K4SX
> > Ron Lowrance
> > Cumming, GA
> >
> >
> >
> >
> >
> > ----- Original Message ----- 
> > From: "Ken" <k9fv at highstream.net>
> > To: <icom at mailman.qth.net>
> > Sent: Tuesday, May 25, 2004 8:42 AM
> > Subject: [ICOM] 756Pro Alinement
> >
> >
> > Hi all,
> >
> > I have a 756Pro that seems to be out of alignment.  If I tune in
10.000mhz
> > on AM, then switch to USB then LSB, shouldn't the sound be the same on
> both
> > LSB and USB?  It is not.  I've checked at 10, 15, and 20mhz on the WWV
> freqs
> > and USB/LSB tone is off on all bands, but amount of tone off varies per
> > band.
> >
> > I looked at the ICOM alignment procedure in the manual, but was told by
a
> > couple of folks that would not do the alignment I needed.  Is this true?
> OR
> > would this  procedure work?
> >
> > I would like to find a repair should within a couple of hundred miles of
> > Mobile, AL so I could perhaps take the rig in one morning, and pick it
up
> > that afternoon if at all possible.
> >
> > Thanks for any info/help anyone can provide.
> > Ken H>
> > K9FV
> > ----
> > Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
> > Icom Users Net: Sundays, 1700Z, 14.316 MHz
> > Icom FAQ: http://www.qsl.net/icom/
> >
> > ----
> > Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
> > Icom Users Net: Sundays, 1700Z, 14.316 MHz
> > Icom FAQ: http://www.qsl.net/icom/
> >
>
> ----
> Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
> Icom Users Net: Sundays, 1700Z, 14.316 MHz
> Icom FAQ: http://www.qsl.net/icom/
>