[aprssig] FW: [OZAPRS] HF antenna

Jack Cavanagh cjcav at earthlink.net
Sun Jul 3 10:10:10 EDT 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
73,

Jack
KB4XF




More information about the aprssig mailing list