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/