[NLRS] My new foot print on 432 MHz

[Dr. Gerald N. Johnson]

I put up a K1FO 22 element 432 yagi in time for the UHF contest. It 
works when you get it ON the station. The 3 dB beamwidth is about 23 
degrees, hardly more than the notches of the brake on a HAM-M style 
rotor. Aiming it is super critical because its refined to have a very 
clean pattern. Moving it less than 10 degrees moved N4PZ from asking 
"who is that?" to having a QSO. For the narrow beamwidth I don't like 
it. I plan to build and stack 3 9 element K1FO when I get a tower up. 
The gain will be similar, but the beamwidth much wider in azimuth. I 
wrote about that combination in my article about close stacking:
http://www.geraldj.networkiowa.com/papers/CSVHF2011/HowClose.pdf

73, Jerry, K0CQ

On 8/11/2015 9:57 AM, David Palm wrote:
>
>
> I recently acquired a 22-element beam for 432 MHz and got the bug to try it
> out last night.  Thanks to K2DRH and N4PZ for on-air check-out -- I just
> guesstimated the directions to their QTHs and could probably have tweaked
> that, but had good QSOs with both gentlemen.  I've written about it here,
> with a couple of pictures:
>
> http://w9hq.blogspot.com/2015/08/getting-fresh-footprint-on-432-mhz-at.html
>
> If all goes well this antenna will be up on the roof later this fall, along
> with a new rotor and new antennas for 50, 144, and 222 MHz.
>
> 73,
>
> David  W9HQ
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