[1000mp] Question to those using the INRAD Roofing filter

[morris wideman]

Hey Bill
Just wanted to say Hi and tell you how much I enjoyed the web pages and pictures. Showed them to the wife and she said lets go.
I love that area of Arkansas. Ive fished in the White River for the trout there and really enjoyed that.  I also love to bass fish although Ive not been going as much as I would like last few years. Take care and maybe someday will get up your way again on a vacation trip. Leave a few fish for seed.
73
Morris Wideman
WA4MIT

----- Original Message -----
From: "William Diamond" <wjdiamond at sbcglobal.net>
Date: Thu, 19 Aug 2004 21:07:13 -0500
To: "All about Yaesu 1000mp" <1000mp at mailman.qth.net>
Subject: RE: [1000mp] Question to those using the INRAD Roofing filter

> Thanks for the info folks...
> 
>            WILLIAM J. DIAMOND
>           ROGERS, ARKANSAS USA
> 
>         HAM RADIO OPERATOR WRØT
>  VISIT MY NEW RADIO ROOM REVISED 7-04, AT
>            www.wjdiamond.com
> 
>        DIGITAL PHOTOGRAPHY SITE IS AT
> http://pages.sbcglobal.net/wjdiamond/index.html
> 
> 
> -----Original Message-----
> From: 1000mp-bounces at mailman.qth.net
> [mailto:1000mp-bounces at mailman.qth.net]On Behalf Of Thomas Beltran
> Sent: Thursday, August 19, 2004 8:47 PM
> To: All about Yaesu 1000mp
> Subject: Re: [1000mp] Question to those using the INRAD Roofing filter
> 
> 
> 
> 
> 
> > Could someone please tell me what a "roofing" filter is ??   I am not
> > familiar with that term.
> >
> It is essentially the First IF filter, setting the maximum bandwidth for the
> radio.  In the Mark V, like George's (and mine) with the Inrad Front-End
> mod, the Roofing filter mod replaces that front-end mod.  The mod goes after
> the stock, 12 khz. 4 pole crystal filter.  It is a 4 khz., 6 pole crystal
> filter, with a small amp that more than compensates for insertion loss.
> Since it sets the maximum bandwidth, one must use the sub-receiver to listen
> to FM.
> 
> About all I can say about the filter is that my radio sounds much "cleaner."
> And, when other hams in the area are on the air (usually 17 meters), I have
> to tune within a few khz. before I get the de-sensing - prior to the mod, I
> would get the de-sensing within 15 - 18 khz., so that is quite an
> improvement.  In other words, I actually have to hunt a bit :)  I live in
> the San Fernando Valley (NE of downtown Los Angeles), and I have quite a few
> neighors who run the legal limit.  I almost never use the noise blanker, but
> recently, the occasion arose, and it seemed to work very effectively.  Tom
> W6EIJ
> 
> 
> 
> 
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