I have an EF180B between a KT36XA and F12 240X. It runs parallel to ther
booms. I never had
any luck with it on anything but 80. The KT36XA is at 100 feet, the EF180B
at about 107 feet, and
the EF240X at 115 feet. I have a 3 relay box on the EF180B.
73, Larry W6NWS
----- Original Message -----
From: "Jim Thomson" <Jim.thom@telus.net>
To: <towertalk@contesting.com>
Sent: Wednesday, January 27, 2010 8:48 AM
Subject: [TowerTalk] F-12 EF-180B....does it resonate on other bands ??
> gents
>
> Does anybody know if the F-12 EF-180B 80m rotary dipole resonates on
> any other ham band.. besides 80m ??
>
> The EF-180B is no longer made by F-12 It's a LL 68' long dipole.
>
> It will be mounted at the top of the mast, inline with the boom of both
> the 20m and also 40m yagi below it.
> IE: 20+40m yagi pointed north, 80m dipole oriented north, but 80m dipole
> radiates E-W.
>
> The reason I ask is.. I'm also playing with the idea of mounting a F-12
> N1715XL 17/15m yagi..... 17' below the top of the tower, on a tic
> ring.
>
> I'd like to know if the 80m dipole will interact with the 17/15m yagi?
> As is, the 80m dipole will not interact with either the 20 or 40m yagi's.
>
> I know a fellow who has a Create CD-78 80m rotary dipole, [aprx 54'
> long] that he sez will resonate on 80m.. and also 20 and 15m..go
> figure.
>
> If worse comes to worse.. I could always rotate the 80m dipole
> independent of the 17/15 yagi.
>
> Until I put the mfj on the 80m dipole, I have no clue as to if it
> resonates on other ham bands.
>
> I don't operate 10/12/30m at all... and have no interest in 10/12/30m.
> So if the 80m dipole screws up 10/12/30 m..... it's a moot point.
>
> However, 160m may be in the works.. down the road... but that will be a
> low priority item.. bottom of the list. Perhaps shunt feeding the tower..
> or a LL 1/4 wave sloper..dunno.
>
> Thanks... Jim VE7RF
>
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