[TowerTalk] LPDA optimal height
Jeff AC0C
keepwalking188 at ac0c.com
Mon Feb 13 19:06:18 EST 2017
I’m considering putting up an LPDA this summer to augment the existing stuff. The LPDA would serve two purposes:
1. 30m/17m/12m DX chasing. I suppose that really means 30/17 as I can’t remember the last really solid 12m opening...
2. Fixed-on-SA for 20/15/10m when contesting.
The problem is the usual tools for helping on height (HFTA) are more or less band specific so what is the best height on (for example 20m into SA) is not really a great height for another equally important (e.g. 30m DX into eastern side of EU). In playing around with HFTA clearly each height seems to provide some benefit over another. Higher band and higher height gives more nulls but better low angle performance.
I figured that something around 80-100’ overall but would greatly appreciate any suggestions...
73/jeff/ac0c
www.ac0c.com
alpha-charlie-zero-charlie
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