[opendtv] Re: '50s Gray-Hoverman TV antenna design
- From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Thu, 3 Sep 2009 15:14:42 -0400
Cliff Benham wrote:
> Today, there is a great need for small, high gain TV
> antennas to receive OTA digital transmissions.
>
> An interesting UHF TV antenna design from the '50s is
> the Gray-Hoverman design. A friend in FL built a
> single bay version of this with wire and a length of
> 1 x 4 inch wood without the reflector. It can be scaled
> to work at VHF.
>
> More information:
http://www.digitalhome.ca/ota/superantenna/
> Or, Google Gray-Hoverman.
>
> The antenna is installed in the vertical plane instead
> of being installed like a traditional horizontally
> mounted TV antenna.
Cliff, when I saw this, I thought "looks awfully similar to the Antennas
Direct DB4 or Channel Master 4221." And sure enough, check out the
performance comparison:
http://www.digitalhome.ca/ota/superantenna/performance.htm
One thing to keep in mind, though, is that the Gray-Hoverman was retuned
for UHF channels only up to 51 or so, whereas the Channel Master 4221 is
evidently still set up through Ch 83. So just push the Channel master
curve a little to the left to see how a retuned design might compare.
The Antennas Direct DB4 is spec'ed out to Ch 69. So its curve may be
closer to that of the Gray-Hoverman.
Bert
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