[TowerTalk] LPDA optimal height

[StellarCAT]

I believe you answered your own question - there isn't an idea height unless 
you have a specific purpose in mind. That said based on what you have I'd 
say 75' would be a good overall height - or keeping with your range then 
80'.

Gary
K9RX



-----Original Message----- 
From: Jeff AC0C
Sent: Monday, February 13, 2017 7:06 PM
To: towertalk at contesting.com
Subject: [TowerTalk] LPDA optimal height

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
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