[AMPS] additional info on Hp675A

[John T. M. Lyles]

I forgot to include the WWW link for Wide Band Engineering's 
application note on using return loss bridges and sweep generators:

http://www.wbecoinc.com/bsetup1.html


>
>Wide Band Engineering, Eagle and Trilithic make return loss bridges 
>or 'rhotectors'.  Wide Band Engineering has a nice pictorial of the 
>setup one would use with their bridge. Wilton (now Anritsu/Wiltron) 
>used to have a lot of application notes on using what they called 
>SWR autotestors, basically the same thing. I remember a lot of 
>concern over the phase of reflections affecting the accuracy with a 
>magnitude only detector like a diode. Used to use tricks like doing 
>a short and open cal, and averaging the results for the infinite 
>VSWR condition....

73
John K5PRO

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