[1000mp] Inrad Front-end Mod

Sun, 18 Jan 2004 21:34:39 -0800 (PST)

Yes, For the Mark-v Including the Field.

All S/Ns

--- n3drk <[email protected]> wrote:
> This mod everyone is speaking of is it for the Mark V also and what
> serial
> numbers?
> Thank You
> john
> 
> ----- Original Message ----- 
> From: "Harry Yingst" <[email protected]>
> To: <[email protected]>
> Sent: Sunday, January 18, 2004 10:12 PM
> Subject: Re: [1000mp] Inrad Front-end Mod
> 
> 
> > 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.
> >
> > I had earlier spoke with Inrad (George?) and he said the Mod
> provides 8
> > db of gain.
> >
> > Good Luck.
> >
> >
> > =====
> > -
> > Harry - AB2PN
> >
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> 
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=====
-
Harry - AB2PN

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