Re: [amsat-bb] RE: Duplexer Design

["IP" <sietetrescincoprimo@xxxxxxxxxxx>]

Here is the link again:

http://www.ozoni.com/n4ip/diplex.doc

Pieter N4IP

----- Original Message -----
From: "IP" <sietetrescincoprimo@hotmail.com>
To: <w4epi@attbi.com>; <dquagliana@aol.com>
Cc: <amsat-bb@AMSAT.Org>
Sent: Monday, October 14, 2002 11:20 AM
Subject: Re: [amsat-bb] RE: Duplexer Design


> I did a quick design that uses 8 parts. This should work good at any power
> if the proper components are used.
>
> Pieter N4IP
>
> www.ozoni.com/n4ip/Diplexer 30-144.doc
>
>
>
> ----- Original Message -----
> From: "Stephen Diggs" <w4epi@attbi.com>
> To: <dquagliana@aol.com>
> Cc: <amsat-bb@AMSAT.Org>
> Sent: Monday, October 14, 2002 8:49 AM
> Subject: [amsat-bb] RE: Duplexer Design
>
>
> > While a duplexer would do the job, it is more complicated and expensive
> > than needed. A low pass filter ahead of the 10 meter receiver should
> > work nicely.
> >
> > The best site I know of for help in designing different types of filters
> > belongs to Dale Heatherington, WA4DSY. You can use his design calculator
> > located at http://www.wa4dsy.net. Look for the "Electronic Filter Design
> > Aids" topic near the bottom of his home page.
> >
> > Regards,
> > Steve Diggs, W4EPI
> >
> >
> > -----Original Message-----
> > From: owner-AMSAT-BB@AMSAT.Org [mailto:owner-AMSAT-BB@AMSAT.Org] On
> > Behalf Of dquagliana@aol.com
> > Sent: Monday, October 14, 2002 6:46 AM
> > Subject:
> >
> > Does anyone have plans for a two meter / ten meter duplexer ?
> >
> > I need to isolate a two meter transmit signal (not more than a
> > couple of watts) from the ten meter receiver. The two meter
> > transmitter and the ten meter receiver need to share a common
> > coax / antenna.
> >
> > Ideas? Suggestions? Kits? QST articles?
> >
> > Since I only need to receive on ten meters and only need
> > to transmit on two meters, could I get away with just using
> > a low pass filter with a cutoff frequency above ten meters?
> >
> > Douglas KA2UPW
> > Satellite/QRP/Mobile <--- all at the same time!!
> >
> > QUIT
> >
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> >
> > ----
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>
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