[Test-Equipment] PC USB 2CH 20M Digital Oscilloscope Logic Analyzer Spectrum Analyzer Data Logger | eBay

[KA4INM radio]

   On 09/02/14 16:24, Floyd Petri wrote:

> For some of you experts on the Test Equipment forum I need your help. I know
> that a Duplexer can be tuned without a Spectrum Analyzer, but I also know it
> can be done really right with a Spectrum Analyzer with a tracking generator.
> So please go to this item on eBay and tell me if in your expert opinion if
> this Spectrum Analyzer with a tracking generator can be used satisfactory
> for tuning a Duplexer.

   First off it's frequency limit is 60 MHz, does that fit into your plans?
   You can use a RF generator with a UHF diode and a Volt meter to tune 
a duplexer if you have a couple of days.  The problem is everything you 
tune effects everything as a rule so you have to go over everything over 
and over and over without a direct display, using a sweep signal.
-- 
   Ron  KA4INM - Youvan's corollary:
                 Every action results in unwanted side effects.