[TowerTalk] F12 EF-240/230

[Brian Smithson]

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 at contesting.com 
> [mailto:towertalk-bounces at 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
> 
> 
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