Hi Jim,
Good idea.
One of the reasons I went with 45° is that I did not want the vertical mast
to ruin the antenna pattern, which happens when the mast goes though the
yagi, or even if the yagi is at the end of the mast. How did you prevent
this problem?
73,
Larry
W1DYJ
----- Original Message -----
From: "Jim Hargrave" <w5ifp@gvtc.com>
To: "Towertalk" <towertalk@contesting.com>
Sent: Thursday, April 09, 2009 3:18 PM
Subject: Re: [TowerTalk] Gizmotchy's
>-----Original Message-----
>From: towertalk-bounces@contesting.com
>[mailto:towertalk-bounces@contesting.com]On Behalf Of Larry Banks
>Sent: Thursday, April 09, 2009 16:19
>To: Dan Zimmerman N3OX; towertalk@contesting.com
>Subject: Re: [TowerTalk] Gizmotchy's
>
>
>Hi Dan,
>
>You said this far better that I did! Thanks for the better explanation.
>
>For the record, I used a 2M yagi at 45° for a few years to "optimize"
>(compromise?) both SSB and FM. Worked. Turned out is was great for
>directing Fox Hunts -- with the tricks the foxes did.
>
>73 -- Larry -- W1DYJ
Larry,
I have a better idea. I have a 14 element Hygain 2m beam. I installed a TV
antenna rotor mounted horizontal at the midpoint of the Boom and rotate the
beam vertical for FM and horizontal for SSB and anywhere in between for
possible phasing. I modified the rotor and installed limit switches and do
not use a control box. I just added a On/OFF/ON switch to the my main
controller. It has operated great for the past 20 years.
* 73's Jim W5IFP *
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|