Reg Edwards wrote:
Cec et al, what have circulators, S-parameters, etc. to do with HF ?

What does scattering have to do with antenna systems with
reflections???? Maybe you should download the HP AN 95-1?
It's available at:

http://www.sss-mag.com/pdf/hpan95-1.pdf

From _Fields_and_Waves_in_Communication_Electronics_ by
Ramo, Whinnery, and Van Duzer. "11.09 Scattering and
Transmission Coefficients ... This article introduces two
of the *most* useful (two-port analysis) forms based
on wave quantities." This is a (c)1965 book, a later version
of a classic fields and waves (c)1944 book by Ramo & Whinnery.
--
73, Cecil http://www.qsl.net/w5dxp



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