[1000mp] Monitor roughness

[Harry Yingst]

All you have to do is just set your rig back to the original 9-1 menu
setting (that hopefully you wrote down).

Then take the if mod out of line for your initial setup (to set your
signal generator output) then re-hook it up and adjust the 9-1 menu.

No need to pull the mod board out, just bypass it (AKA route the coax
cable to it's original location)

The mod is is just a preamp.





--- Thomas Beltran <tbeltran@earthlink.net> wrote:
> 
> 
> > Tom check the archives, as I had previously answered this with an
> easy
> > procedure
> >
> 
> Thanks Harry, unfortunately, I installed the front-end mod before
> your post,
> but for those who did not read it, and particularly those planning on
> doing
> the mod, here it is:
> 
> 
> > The service manual has you set the IF gain using only 1 block on
> the
> > s-meter lit with a +11dbu source.
> >
> > Now not having a calibrated signal source I had go in reverse to
> find
> > the proper point.
> >
> > How I did mine was to inject a signal from my signal generator then
> > adjust the amplitude of the signal generator until I had just 1
> block
> > on the s meter lit (doesn't take much signal).
> >
> > Then with the IF mod in place and without changing the signal
> generator
> > settings that were made above I re-adjusted the IF gain to try to
> get
> > to the same point (only 1 block lit)
> >
> > When I started My 9-1 setting was 13 with the mod in place my final
> > setting turned out to be 10.
> >
> > Without the mod IF (9-1) = 13 and 1 S-Meter block lit
> >
> > With the mod IF (9-1) = 10 S-Meter = S 1.5
> >
> > I tried setting the IF (9-1) to 9 but that setting was too light
> (no
> > S-Meter reading at all) and the rig seemed a little deaf.
> >
> > 10 turned out the best for me.
> >
> 
> 
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=====
Harry - AB2PN

-

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