[AMPS] Suppressor measurements

[Fred Fliss]

It seems there is a paucity of data relating to comparitive suppressors.  I 
am in a position to have access (limited) to several versions of RLC 
measurement instrumentation.  Given time ( a month or so ) I could arrange 
to have measurements made of suppressors for comparison purposes ( I would 
have to provide a certain person his six-pack requirements for a month ) and 
even get a report.  I would be willing to do so once for this reflector, 
given that it's rather more than a tad of inconvenience.  I tend to travel 
rather a lot, so if there is a lad elsewhere who'd want to collect the 
suppressors, then supply them to me at an agreed-upon date (via parcel post, 
I presume), I would have them measured, then report.  Given my understanding 
of the nature of such measurements, I would report the series equivalent 
impedance (R +jX) the parallel equivalent impedance (G + jB), or perhaps 
only one of the above, as phase angle dictates.

I would think it to be a splendid additional measurement to have someone 
with a vector impedance meter do measurements of the actual input impedance 
of the tuning network of various "famous" amplifiers versus frequency, 
bandswitch settings, and so on, so that we can all correlate suppressor 
performance with ultimate performance.  I, for one, would pooh-pooh any 
supposed benefits of a high-Q suppressor, if that Q was achieved at a 
frequency where the output network of my "famous-maker" amplifier happened 
to have a parallel resonance (shall we say, Z=10kohms + j5 ?)  I beleive we 
can all agree that standard LaPlacian analysis has merit and fits our 
network analysis standard, yes?

I shall await a reply.  Let us say that on May 1, I shall submit up to ten 
(10) suppressors to my test facility.  Perhaps somebody else would like to 
keep a tally of which amplifiers will be made availalbe at one time at 
another test facility for S21 evaluation of the output networks (some large 
populous - NYC?  Philadelphia?  Atlanta?  Los Angeles?)

Cheerio,

Fred
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