[TowerTalk] Holy SteppIR!

[Michael Tope]

----- Original Message ----- 
From: "Joe Subich" <W4TV at subich.com>
To: "'Michael Tope'" <W4EF at dellroy.com>; "'StellarCAT'" 
<RXDesign at ssvecnet.com>; "'tower'" <towertalk at contesting.com>
Sent: Tuesday, December 27, 2005 7:26 AM
Subject: RE: [TowerTalk] Holy SteppIR!


>
> Mike,
>
>> The antenna array in question (6 yagi H-frame), has enough
>> gain and is mounted high enough that it is probably starting to
>> look more like a high-gain VHF/UHF array than a traditional
>> stack of HF yagis.
>
> The lobe/null structure of this array is such that the elevation
> would need to be well above 20 degrees before the ground reflection
> disappeared.
>

Yeah, that sounds about right. Below that level, the vertical pattern
nulls shouldn't be affected too much (if at all) by the "tilt".

73, Mike.........................................