[Elecraft] EH Antenna test using K2

Charles Greene W1CG at QSL.NET
Sat Mar 12 21:11:45 EST 2005


To All,

Tony Wells, G7IGG <tony.wells at adrman.co.uk>  and I are testing an EH 
antenna vs a normal 1/4 wave dipole and we need some signal reports.

The test is using my K2 and Tony's Beacon Monster software.  I am operating 
a manually controlled beacon on 14.102 MHz.  The software times the beacon 
and commands the K2 to send a brief message on one antenna then switches 
antennas and sends on the other.  See http://www.tinyurl.com/6oh59    for 
details of the message and the status of beacon.

This is an example of what you can do with the K2.

Please send signal reports to me.  The best way to measure the signal 
report is to use Spectrogram, MixW or Spectran to measure the signal 
strength.  If you can record a .wav file with the AGC off, please send it 
and  I can analyze it with Spectrogram.

Locally and in US, preliminary results indicate the 1/4 wave dipole is 3 to 
6 dB stronger than that from the EH antenna.  I have some reports from 
European stations that the EH is 3 to 6 dB stronger, but I have a very 
small sample; that's why I need more reports.  The old adage that a 
vertical antenna radiates equally poorly in all directions may not be 
true.  These antenna may have some directivity.


73,  Chas,  W1CG 



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