[Lowfer] Medfer Antenna.
LEE BAHR
pulsarxp at embarqmail.com
Wed Oct 28 21:22:10 EDT 2009
I appreciate all the comments regarding MEDFER antennas. I was having a
problem replying to the group as the list was set up to accept my ARRL
e-mail address. I don't use that anymore as it screwed up a lot of mail
going through lists. My posts were not getting through. Doug, our list
administrator, n0nas, got me straight by telling me the ARRL e-mail address
was screwing up my posts as I was subscribed there and using this e-mail
address.
Reading all the recent posts on here, it is my understanding we don't know
if a "top hat" is considered part of the length or or just the width of an
antenna. (Fat radiator or short inverted L). Based on the posts, I suspect
if I had the base of the bottom loaded radiator at my gutters and I grounded
my antenna to the gutter, it might be considered a radial if not grounded
and may or not be considered a radial if the gutter were grounded. I know
getting it up high is good, but with no radial system, that is bad. If I
ground mount the antenna, I can most likely have buried radials or a ground
stake and the length calculated would just be the length between the
transmitter and ground stake or beginning of the buried radials.
It's hard to determine which set up would be best to put up without knowing
how the FCC would view the set up. My interests in LOWER, MEDFER and HIFER
are the same as most of you guys on here. It's just I am now trying to also
construct a legal low power AM station for my small 50 home subdivision in
the country for the home owners association giving current local
information.
My present unused or installed antenna is a nbr 16 magnet wire coil wound on
a 4 inch ID PVC pipe and a 1/2 inch copper pipe mounted on top of it as the
radiator. I can also go extreme and wind a linear wound coil on a 10 inch
pvc pipe around 10 foot long mounted on the ground with radials under it and
have the transmitter at it's base. I just want to cover well, around a 1500
foot radious.
Lee, w0vt
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