>
Fred. Would you like to Rx a sample of the low VHF-Q suppressor we
proffer for the 3-500Z? If yes, send me a snailmail address.
cheers
>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
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
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