[TowerTalk] 160-m Inverted L or Sloper?

Dennis O'Connor k8do at mailblocks.com
Tue Nov 15 10:26:54 EST 2005

I have more space for antennas than most... I am tinkering with 80 meter arrays right now... A single quarter wave vertical over 50 radials is my "0 dB" indicator, and is 600+ away from the nearest other 80 m antenna (>2 wl) and 840 , yet EZnec still shows significant interaction, mostly in perturbing the pattern from a smooth outline and changing the FB  1 to 2 dB... Nothing I will be able to hear, yet I know it is "playing" my results... I am planning to run a 12V line out there and add a relay to open the "0 dB" antenna...  The two directional arrays are 1 wave apart and facing back to back (reflector facing reflector) and EZnec shows minimal pattern disturbance and induced currents on the 'idling' array are 0.02 amp or less, an amount I can live with without going to relays...

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