With all this talk of 300'+ towers, I seem to remember an FCC-imposed limit
of 200' for amateur radio antennas. Don't remember if that's from ground
level or above an existing building, or what. I do remember a graduated
height limitation based on distance from active runways at airports. Can
one, for instance, legally hang a 20M beam at the 1500' level of a 1600'
existing tower? Guess I'll have to get the book out and read the fine print
on this stuff, not that I'm in danger of exceeding any rules with the top of
my mast at 96'. And after the sweat and hassle to get even that high, it's
never going to get any higher, I can promise you. :-)
73, Jerry W5KP
----- Original Message -----
From: "George Shaw" <george.shaw@ukf.net>
To: <towertalk@contesting.com>
Sent: Monday, December 10, 2001 1:45 AM
Subject: RE: [TowerTalk] Tall
>
> Ok this may seems a silly question but with all this talk of 2000' +
towers
> it got me thinking. WHY does the height of the tower matter so much? Is it
> to elevate the antenna above the surrounding ground level due to some sort
> of RF coupling or is it to gain max distance?
>
> Is it not easier to mount a shorter tower on higher ground atop a hill? I
> have a 300' tower beside me but if it was moved 1/3rd mile east it would
> place the top of the antenna at 1500 ' as it's up a hill? So is it that
the
> antenna needs to be a certain wavelength from g/l ?
>
> --
> George Shaw
>
> eMail: george.shaw@btinternet.com
> eMail: george.shaw@ukf.net
> Fax/Voice Mail: +44 (0) 87 0133 6126
> Mobile: +44 (0) 77 4036 1163
> ICQ#: 1741675
>
>
>
>
> List Sponsored by AN Wireless: AN Wireless handles Rohn tower systems,
> Trylon Titan towers, coax, hardline and more. Also check out our self
> supporting towers up to 100 feet for under $1500!!
http://www.anwireless.com
>
> -----
> FAQ on WWW: http://www.contesting.com/FAQ/towertalk
> Submissions: towertalk@contesting.com
> Administrative requests: towertalk-REQUEST@contesting.com
> Problems: owner-towertalk@contesting.com
>
>
List Sponsored by AN Wireless: AN Wireless handles Rohn tower systems,
Trylon Titan towers, coax, hardline and more. Also check out our self
supporting towers up to 100 feet for under $1500!! http://www.anwireless.com
-----
FAQ on WWW: http://www.contesting.com/FAQ/towertalk
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: owner-towertalk@contesting.com
|