Hmmmm.... Minimal tools
Rf Voltmeter -w- 50 ohm termination, signal generator
-w- pad, 50 ohm dummy load for unused port.
Mike N8RQU
--- Reza PWW <[EMAIL PROTECTED]> wrote:
> I mean in emergency situation, like in natural
> disaster.
>
> What the minimal tools I have to have to be able to
> adjust the duplexer and how?
>
> reza
>
>
> --- Kris Kirby <[EMAIL PROTECTED]> wrote:
>
> > On Thu, 22 Dec 2005, Reza PWW wrote:
> > > Can anybody can advise me for tunning duplexer
> > with minimum tools? For
> > > example case: I have to change TX-RX frequensi
> in
> > some place, where I
> > > only have SWR and some HT and volt meter?
> >
> > A case of beer, an SWR meter, and a radio. Tune
> for
> > minimum SWR. The case
> > of beer is to insure accuracy -- largely because
> > there isn't much. You're
> > tuning for minimum insertion loss at that point
> > (technically return loss).
> >
> > Really, you should find a friend with an IFR,
> > communications analyzer, or
> > spectrum analyzer with a tracking generator. To
> > properly do the job, you
> > need a dummy load on the unused port. Impedance
> > mismatches can also do a
> > job on cavity performance.
> >
> > --
> > Kris Kirby, KE4AHR <[EMAIL PROTECTED]>
> > "BIG BROTHER IS WATCHING
> > YOU!"
> > This message brought to you by the US Department
> of
> > Homeland Security
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
> [EMAIL PROTECTED]
>
>
>
>
>
__________________________________________
Yahoo! DSL Something to write home about.
Just $16.99/mo. or less.
dsl.yahoo.com
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/
<*> To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
