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Re: [TowerTalk] convert TH7 to TH11

To: "Tower and HF antenna construction topics." <towertalk@contesting.com>, <thompson@mindspring.com>
Subject: Re: [TowerTalk] convert TH7 to TH11
From: "Gene Fuller" <w2lu@rochester.rr.com>
Reply-to: "Tower and HF antenna construction topics." <towertalk@contesting.com>
Date: Tue, 16 Mar 2010 23:21:39 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Another advantage of the TH-11 is no traps to burn up in the driven portion 
(an LP cell). That plus having 12 and 17. seems to me like a pretty good 
tradoff for less than 0.4 db.
Gene / W2LU
----- Original Message ----- 
From: <K7LXC@aol.com>
To: <towertalk@contesting.com>; <thompson@mindspring.com>
Sent: Tuesday, March 16, 2010 4:49 PM
Subject: Re: [TowerTalk] convert TH7 to TH11


>
> In a message dated 3/16/2010 12:21:16 A.M. Pacific Daylight Time,
> towertalk-request@contesting.com writes:
>
>>  The main reason to upgrade to the TH-11 is to add 17 and  12.  Looking
> at the
> Hy-Gain portion of the MFJ 2010 catalog   will notice that the average 
> gain
> of the TH-7 is slightly higher at 8.77  dbi versus 8.4 dbi for the TH-11.
>
>    And don't forget with the dual driven elements  you get wider
> bandwidth. A TH6 is either a phone or cw antenna - a TH7 will do  both 
> reasonably
> well.
>
> Cheers,
> Steve    K7LXC
> TOWER TECH
>
>
>
>
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