At 9/5/2008 08:46, you wrote:
> > [EMAIL PROTECTED] wrote:
> > I disagree. If your TX can't handle the near pure reactance
> > of the duplexer at the reject frequency, the proper remedy
> > is an isolator. Now there's some low Q. If the RX can't
> > handle it, replace the preamp with one that is
> [EMAIL PROTECTED] wrote:
> I disagree. If your TX can't handle the near pure reactance
> of the duplexer at the reject frequency, the proper remedy
> is an isolator. Now there's some low Q. If the RX can't
> handle it, replace the preamp with one that is unconditionally
> stable.
You ap
At 9/4/2008 07:35, you wrote:
> > >There have been example cases where unwanted product generation
> > >has been "fixed" by replacing portions of the antenna system
> > >coaxial cables with a less or lower Q cable. Some transmit
> > >antenna combiner low-level generation issues have been addressed
t: RE: [Repeater-Builder] Re: Wits End -- Desense (actual Cable-Q
contributions)
Hi John,
I'm not familiar with that particular radio, but would it be possible to
disconnect the antenna feed at the Rx PCB and place a 50 ohm surface
mount
resistor in it's place?
That may allow you t
> >There have been example cases where unwanted product generation
> >has been "fixed" by replacing portions of the antenna system
> >coaxial cables with a less or lower Q cable. Some transmit
> >antenna combiner low-level generation issues have been addressed
> >with lower-Q coax jumpers.
> Not
At 9/3/2008 08:09, you wrote:
>Desense (actual Cable-Q contributions)
>
>Hi John,
>
>There is a case where you can actually be fighting a complex
>problem with unwanted contributions actually made/introduced
>by the cable (feed-line) Q. To be more specific some combination
>of the antenna, duplexer
2008 9:25 AM
To: Repeater-Builder@yahoogroups.com
Cc: [EMAIL PROTECTED]
Subject: RE: [Repeater-Builder] Re: Wits End -- Desense (actual Cable-Q
contributions)
Skipp,
Thanks for the suggestion. I have tentatively concluded that the
"desense" problem is not classic desense caused by too m
ED] On Behalf Of skipp025
Sent: Wednesday, September 03, 2008 11:10 AM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: Wits End -- Desense (actual Cable-Q
contributions)
Desense (actual Cable-Q contributions)
Hi John,
There is a case where you can actually be fighting
: [Repeater-Builder] Re: Wits End -- Desense (actual Cable-Q
contributions)
Desense (actual Cable-Q contributions)
Hi John,
There is a case where you can actually be fighting a complex
problem with unwanted contributions actually made/introduced
by the cable (feed-line) Q. To be more
Desense (actual Cable-Q contributions)
Hi John,
There is a case where you can actually be fighting a complex
problem with unwanted contributions actually made/introduced
by the cable (feed-line) Q. To be more specific some combination
of the antenna, duplexer, hardware circuit(s) in addition
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