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1. Topband: Re: Zo measurement (score: 1)
Author: "HENRY PFIZENMAYER" <pfizenmayer@worldnet.att.net>
Date: Mon, 23 Aug 2004 13:12:38 -0700
Tom et al . FWIW . There is yet another "easy" way to measure Zo .. Just measure the input impedance to the structure versus a range of frequency and plot the points on a Smith chart. Assuming the me
/archives//html/Topband/2004-08/msg00055.html (6,872 bytes)

2. Topband: RE: Radial systems (score: 1)
Author: "HENRY PFIZENMAYER" <pfizenmayer@worldnet.att.net>
Date: Fri, 3 Sep 2004 16:30:13 -0700
I suspect the old timers have seen this , but there is a reference article from Janyuary 1936 Proceedings of the IRE by Chamberlin and Lodge - The Broadcast Antenna - that addresses many of these que
/archives//html/Topband/2004-09/msg00013.html (7,784 bytes)

3. Re: Topband: 160 AM BCB filter (score: 1)
Author: "Henry Pfizenmayer" <pfizenmayer@worldnet.att.net>
Date: Sat, 20 Aug 2005 21:52:01 -0700
FWIW - I spent a few minutes looking at the filter and with 4 inductors I could see in the picture - leading to a 9 th order Elliptic Cauer- Chebyshev equal termination filter with ripple set to 0.03
/archives//html/Topband/2005-08/msg00054.html (9,222 bytes)

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