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[aprssig] FW: [OZAPRS] HF antenna

Eric Christensen kf4otn at ericsatcom.net
Sun Jul 3 15:56:43 UTC 2005


What is the website?

Eric KF4OTN 

-----Original Message-----
From: aprssig-bounces at lists.tapr.org
[mailto:aprssig-bounces at lists.tapr.org] On Behalf Of Jack Cavanagh
Sent: Sunday, July 03, 2005 10:10
To: TAPR APRS Mailing List
Subject: Re: [aprssig] FW: [OZAPRS] HF antenna

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

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