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Re: [OM] IMG: Airport Observations

Subject: Re: [OM] IMG: Airport Observations
From: Paul Braun <pbraun42@xxxxxxxxx>
Date: Mon, 17 Dec 2012 17:31:50 -0600
On Mon, Dec 17, 2012 at 5:25 PM, Chuck Norcutt <
chucknorcutt@xxxxxxxxxxxxxxxx> wrote:

> A full wave antenna for 150Mhz (disregarding end effects) is 2 meters.
> It's for something much lower frequency than that.  For full wave
> antenna length in meters divide 300 by frequency in Mhz.
>
> Conversely, to discover design frequency in Mhz of a full wave antenna
> divide 300 by antenna length in meters.  Since that antenna appears to
> be about 6 meters long the (full wave if it's that) frequency would be
> about 50 MHz.  What's at 50 Mhz?  I dunno anymore.
>
>  The 6m ham band runs from 50MHz to 54MHz.  VHF analog television in the
US used to be in that range - otherwise, I'm not currently aware of a
commercial service in that spectrum.  Aircraft bands are way below that (up
to 25MHz) or up in the VHF range.  Maybe it's a half-wave or quarter-wave
for one of the HF aviation freqs?
-- 

Paul Braun
Music Junkie

"Music washes from the soul the dust of everyday life." -- Harlan Howard
-- 
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