[Antennaware] Re: Antennaware Digest, Vol 9, Issue 2

Durwydd MacTara durwydd at hotmail.com
Tue Sep 23 20:59:25 EDT 2003

I used a "long neck" beer bottle set in concrete for my base. used a long 
brass screw in a SO-239 and a drilled and tapped hole in the pipe for my 
feed point. I ran heavy stranded jumper wires from the shell of the SO-239 
to a grounding ring made from #4 stranded, to which I soldered my 34' 

.105 dia. Grass trimmer line is cheaper than dacron and just as strong!

  "Communications" is a People skill, the rest is technology.
             Durwydd MacTara

>From: antennaware-request at contesting.com
>Reply-To: antennaware at contesting.com
>To: antennaware at contesting.com
>Subject: Antennaware Digest, Vol 9, Issue 2
>Date: Tue, 23 Sep 2003 12:00:37 -0400 (EDT)
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>Today's Topics:
>    1. 40m vertical questions (Dave N0RQ)
>Date: Mon, 22 Sep 2003 15:43:03 -0500
>From: "Dave N0RQ" <n0rq-1 at dfwair.net>
>To: <antennaware at contesting.com>
>Subject: [Antennaware] 40m vertical questions
>Message-ID: <00ab01c3814a$21dcb020$6700a8c0 at HAM1>
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>Greetings.  I'm getting ready to start my first attempt at a 1/4 wave =
>vertical -- for 40 meters.  (Maybe 80m later on.)  Perhaps someone could =
>give a few pointers.
>I'm thinking of 1" copper pipe for the first 20' and 1/2" or 3/4" for =
>the remainder.  I could "guy/dacron" it at the 20' mark if it turns out =
>to be necessary.  Is this size copper a bad idea?   (It will have at =
>least 4, probably 8 or more elevated radials (over pretty good ground).) =
>   Then, how do I tell how long to make it?  For a typical dipole, 468 / =
>7.150 gives me a length of 32' 9", but I know the diameter of the pipe =
>will affect this -- so how do I compute an good length?  (Good guesses =
>are appreciated, too!)
>And last questions... what would be a good way to hook the coax to the =
>base of the 1" pipe and radials?
>Thanks & 73,
>Dave N0RQ
>Antennaware mailing list
>Antennaware at contesting.com
>End of Antennaware Digest, Vol 9, Issue 2

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