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[TowerTalk] Re: tuning M2's 40m1L antenna

To: <towertalk@contesting.com>
Subject: [TowerTalk] Re: tuning M2's 40m1L antenna
From: jonk@jskent.com (Jonathan Kaplan)
Date: Sun, 4 Jul 1999 05:51:56 -0700
Sory, forgot to mention that the 40m1L is a rotatable dipole-- no
front/back.

Jonathan

-----Original Message-----
From: Dale Parfitt <parinc@bellsouth.net>
To: Jonathan Kaplan <jonk@jskent.com>
To: <towertalk@contesting.com>
Date: Sunday, July 04, 1999 5:10 AM
Subject: Re: tuning M2's 40m1L antenna


>Jonathan Kaplan wrote:
>
>> Hi all,
>>     I just finished assembling a brand new 40M1L and decided to
>> some priliminary tuning prior to raising it on the tower next weekend.
>> Using
>> an SWR meter(MFJ-259) I tuned it at about 7 ft height. I know that at
>> that
>> height, I'm not getting the best reading but can someone tell me what
>> the
>> best one could expect before raising it on the tower?
>> The best I got was 3:1 at 50ohms at 6.70 mhz.
>>
>> Thanks in advance.
>>
>> Jonathan KO6XS
>
>   Hi Jonathon,
>
>That's less than 0.1 waves up.  Is there any way you can position the
>antenna vertically so the reflector is closest to the ground? That way
>you can take advantage of the antennas inherent F/B and approximate very
>closely how it will tune when up 70' or however high you will mount it.
>
>Dale W4OP
>


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