[R-390] Mechanical Filters

[roy.morgan at nist.gov]

Quoting Larry WA9VRH <wa9vrh at mtco.com>:

> Hi Keith,
> 
> I would checkout Fair Radio's website.  http://www.fairradio.com/  They may
> still have the 4kc filter available.

Keith an all,

Dave Curry Longwave Products makes filters for the 75A-4 and the R-390A
http://www.75a-4.com/
Click the picture link to see the R-390A style filter.
The review from ER is at:
http://www.75a-4.com/REV0.jpg

You can also order the75A-4 types from ER Magazine.
http://www.ermag.com/index.cfm?v_link=catalog
though the R-390A types are not shown there.

Roy, K1LKY






> 73 Larry WA9VRH
> 
> 
> ----- Original Message -----
> From: "Keith Densmore" <densmore at idirect.com>
> To: <r-390 at mailman.qth.net>
> Sent: Wednesday, May 30, 2007 4:52 PM
> Subject: [R-390] Mechanical Filters
> 
> 
> > Greetings To All,
> > I have a bad 4KC mechanical filter. I seem to remember someone mentioning
> it
> > is possible to have them  rebuilt.
> > Is this viable, or is there someone selling replacements?
> > Thanks, 73,
> > Keith, VE3TS
> >
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Roy Morgan
13033 Downey Mill Road
Lovettsville VA 20180