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[aprssig] FW: [OZAPRS] HF antenna

Jack Cavanagh cjcav at earthlink.net
Sun Jul 3 14:10:10 UTC 2005

I calculate 7.03 metres.  this was done using L(ft)=468/F(MHz) this 
accounts for end effect shortening.  See ARRL Handbook.

   This difference should not be a big factor in reception as you 
attenuate external noise as much as the signal with a mismatch at 10 MHz.

Your taxes are paying for some nice propagation data collected in Oz.
Check the web site for current HF conditions


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