Hi Roger!
I helped a friend put up this same antenna. We mounted it on a crank-up when it
was cranked-down so I suspect the heights are
similar. We had a devil of a time tuning the 30m portion and it was because of
the truss draped over the linear loading wires. I
think he subscribes to this list so perhaps he'll have more info for you.
73!
-Brian n8wrl
> -----Original Message-----
> From: towertalk-bounces@contesting.com
> [mailto:towertalk-bounces@contesting.com] On Behalf Of Roger Huntley
> Sent: Friday, October 21, 2005 9:43 PM
> To: TowerTalk
> Subject: [TowerTalk] F12 EF-240/230
>
> I have assembled a Force 12 EF-240/230 (2 element 30 & 40 Mtr
> on a common
> boom) and have suspended it up 25 feet on a rope between two
> trees. I am unable to get the antenna resonant at a
> frequency that is in either band.
> Email to F12 three days ago was not answered.
>
> The best tuning is about 1.25 @ 6.7-6.8 Mhz and quite narrow.
> On 30 it is
> 1.5 @ 9.8 Mhz. I do not seem to get the resonant frequency
> above those listed. I have tried moving the linier jumpers
> so they are quite a ways off what the manual quotes but it
> does not seem to make much difference. I am using a MFJ259B
> on about 35 feet of coax.
>
> Anyone out there had any experience with this antenna and can
> offer some suggestions?
>
> Thanks,
>
> Roger, W7VV
>
>
> _______________________________________________
>
> See: http://www.mscomputer.com for "Self Supporting Towers",
> "Wireless Weather Stations", and lot's more. Call Toll Free,
> 1-800-333-9041 with any questions and ask for Sherman, W2FLA.
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|