[1000mp] More listening audio and other stuff

[Mike Schatzberg]

Hello MP Fans:

If SSB is your main interest for the second receiver, it isn't necessary to
hard wire a narrow filter.  You can plug in a narrow SSB filter in the open
filter slot for the second receiver, the dual conversion one.  While in SSB,
select sub and narrow 1, and you will have the narrow SSB filter engaged.

I like to use the Collins 2.0 mechanical filter in that slot.  It
significantly improves receiver performance with its skirts being much
narrower than the stock filter.  It produces excellent audio quality also.
The Inrad 2.1 crystal filter has even steeper skirts, and may be a good
option for you also.  I use the Inrad 2.1 filter in the 3rd IF of the main
receiver, with an Inrad 1.8 filter in the 2nd IF as my narrow pair.

The main receiver is actually a Quad Conversion, with the 4th IF filtering
being entirely digital.

73 and Happy Dxing,

Mike Schatzberg
WB2AJI


----- Original Message ----- 
From: "Joe Subich, W4TV" <k4ik at subich.com>
To: "'All about Yaesu 1000mp'" <1000mp at mailman.qth.net>;
<Cqtestk4xs at aol.com>
Sent: Tuesday, November 29, 2005 9:20 PM
Subject: RE: [1000mp] More listening audio and other stuff


>
> Bill,
>
> > Second, any way to, when running, make the second rx as
> > narrow as the first one so I can S/P with it on the same
> > band in contests?
>
> The second receiver is double conversion vs. triple conversion
> for the main receiver.  You can install one CW filter in the
> second receiver ... it is selected by pressing "sub" followed
> by NAR1 or NAR2.  This must be done once per band.
>
> After replacing the 500 Hz Collins mechanical filter in my
> second receiver with an INRAD 721-C (500 Hz crystal), I
> heartily recommend either the 721-C, a 703-C (400 Hz) or
> a Yaesu YF-110C (the old 500 Hz crystal filter from a FT-1000D
> if you can find one).  The crystal filter made the second receiver
> much more usable.
>
> If you are talking about tightening up the SSB performance,
> it is possible to "wire in" an INRAD 702 (2.1 KHz) in place
> of the Murata 6 pole 2.4 KHz ceramic filter.  The filter will
> not fit in the available space ... it must be located elsewhere
> and connected by small coax (RG-174).
>
> 73,
>
>     ... Joe, W4TV
>
>


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