[Collins] 75S3B info

[Martin Sole]

Indeed, yes, inside the cover not the actual filters. But why? What does it
do? Was it simply to prevent the filters from falling out of there
reasonably secure but not at all fixed sockets? Are there any NOS
replacements? Are there any mint ones from estate sales available on
E-whatever. Can anything else be used in its' stead? What sort of pressure
should be applied to the filters for best performance? DX hounds need to
know.

73
Martin


-----Original Message-----
From: David Knepper [mailto:cra at floodcity.net] 
Sent: 23 June 2005 20:26
To: Martin Sole
Cc: Collins Mail List
Subject: Re: [Collins] 75S3B info

The foam that you speak of was used INSIDE the mechanical filter cover.
Over the years, it decomposed.


David, W3ST
Publisher of the Collins Journal
Secretary to the Collins Radio Association To Join the CRA go to
www.collinsra.com
Nets:  3805 Khz, Monday/Wednesdays 8 PM EST and 14250 Khz Saturday, 12 Noon
EST

----- Original Message -----
From: "Martin Sole" <msole at loxinfo.co.th>
To: "'Don and Diana Cunningham'" <wb5hak at sirinet.net>; "'Collins Radio
Association'" <Collins at mailman.qth.net>
Sent: Thursday, June 23, 2005 10:43 AM
Subject: RE: [Collins] 75S3B info


> I will be interested to hear what others have to say about this. I 
> found some similar decomposing foam type material in my 3B. Hope it's 
> not the magic DX foam that allows the S line to hear signals others can't.
>
> 73
> Martin, HS0ZED
>
>
> -----Original Message-----
> From: collins-bounces at mailman.qth.net
> [mailto:collins-bounces at mailman.qth.net] On Behalf Of Don and Diana 
> Cunningham
> Sent: 23 June 2005 06:34
> To: Collins Radio Association
> Subject: [Collins] 75S3B info
>
> I just got a very nice 75S3B in a S3 line today (73S3B, 32S3, 312B4,
516F2,
> 30L1).  I am in the process of looking it over for obvious problems 
> before "smoke testing", hi.  Under the filter cover on top of the 
> chassis, I
found
> some foam packing around the filter that is doing some serious 
> decomposition, to the point that it will crumble mercilessly when
touched!!
> Any reason to try to find/make a replacement foam for this??  If so,
anyone
> have a spare before I start looking for some foam rubber to cut up?
> Tks,
> Don, WB5HAK
>
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