[Antennas] coax 'sweet lenght'

Ronald KA4INM Youvan ka4inm at tampabay.rr.com
Sun Oct 10 19:38:08 EDT 2004


> I remember discussion that there was a 'sweet length' for rg8, rg13 coax 
> lengths.
> The length was a multiple that gave the best match, etc. Or is this the 
> Ham version of 'urban legend'???

   ARRL hand book (or antenna book) had a small hard to read chart showing good 
and bad lengths of coax for use on all of the then HF bands.
   This relates to using an antenna on more than one band with one fixed feed 
line length, such as a trapped dipole.

   If you want to measure the match between an antenna and it's feed line, 
measure it at the antenna's feed point, to measure it 1/2 wl (electrical)
(or multiples of) away from it is the next best place to measure it.
-- 
        73 (= Best Regards) de: Ron ka4inm at tampabay.rr.com
     100% LINUX, since July, 1997   SENT Time and Date are UTC
        Visit my HAM Web SITE at: http://www.qsl.net/ka4inm



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