[1000mp] Interesting

[Bob Main]

Did the noise blanker this afternoon when I put in the roofing filter and 
the 708 (2nd IF 250 Hz filter).  In fact, I think I've ran out of mods for 
this rig.  The 704 (3rd IF 250 Hz filter) is backordered and have 2 months 
to wait for it.

So that's what the roofing filter does.  Cool.  You hear all this techinical 
stuff that sounds good, but when you finally hear it, Oh WOW.

Thanks guys,
Bob
KB4CL

----- Original Message ----- 
From: "Mike Schatzberg" <cherokeehillfarm at earthlink.net>
To: "All about Yaesu 1000mp" <1000mp at mailman.qth.net>
Sent: Friday, March 18, 2005 7:33 PM
Subject: Re: [1000mp] Interesting


> It's the combination of the 1st IF being more narrow, and the higher gain 
> in
> the 1st IF from the 2 stage amplifier, which greatly exceeds the insertion
> loss from the new filter.  This in turn allows you to lower the IF gain in
> menu 9-1, and there you have it.
>
> All of this, plus all the benefits of the 6 pole crystal filter itself,
> i.e.. reduction of whiskering from nearby stations, IMD improvements, BDR
> improvements, DR improvements, etc.
>
> Now, do the noise blanker mod and finish the job.  It's only one component
> change.
>
> 73 and Happy DXing,
>
> Mike
> WB2AJI
> ----- Original Message ----- 
> From: "Bob Main" <bobmain1 at alltel.net>
> To: "MarkV" <1000mp at mailman.qth.net>
> Sent: Friday, March 18, 2005 7:12 PM
> Subject: [1000mp] Interesting
>
>
> Tuning around tonight after installing the roofing filter this afternoon 
> and
> notice that the bands appear to be a lot quieter.   Quiet as in lack of
> static and other normal noise that I hear.  Still plenty of stations. 
> Just
> not sure if it is the roofing filter (since I really didn't know what to
> expect) or conditions.  If it is the roofing filter, I like it.
>
> 73s
> Bob
> KB4CL
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