Les:
Depending on the construction of your home, you may or may not see
too much of a difference. The exterior LPA will have substantially less
gain than the single band antennas, but if your roof has lots of flashing,
metal sheathing, etc., the LPA in the clear may do better. Only way to know
for sure is to try it.
Here is the URL for the FCC info:
_http://www.fcc.gov/mb/facts/otard.html_
(http://www.fcc.gov/mb/facts/otard.html)
Note that there is a 12' restriction above the roof-
You mentioned a log periodic. As I interpret the FCC mandated
reasonable accomodation for over the air TV reception there is nothing to
prohibit "single channel" yagi antennas for "local" area reception. If you
mount
a single antenna for each (channel) band, you can certainly argue that it
is within the FCC parameters. You can do the math-channnel 2 is just above 6
mtrs, etc.
Interestingly, the FCC accomodation only mentions local TV
reception. If there is a more distant (TV) station that carries programming
not
available in the local area I would think you could erect an antenna of
adequate size to receive that programming without difficulty.
In order to assuage any nasty neighbors, I would suggest you start
slowly and work up to whatever you intend to do. Obviously you will have a
TV, (or Icom 7000) in the shack to feed the TV signal into (if necessary for
demo purposes). There is nothing in the accomodation that requires the
outdoor antenna to be connected to all of the TV's in your home.
If you get along well with your immediate neighbors you might want to
run it by them first. If the people near you aren't upset, you're in a
much stronger position should some dimwit down the street complain. Also,
keep an accurate log! I've experienced situations where people have
complained that someone was interfering with their TV, etc., when you were not
even
home! Good luck and good DX!
73,
Chris
Patterson W3CMP
In a message dated 5/8/2009 4:28:01 P.M. Eastern Daylight Time,
les@highnoonfilm.com writes:
A few days ago I noticed that one of my neighbors in our deed restricted
neighborhood had erected an outdoor TV antenna, complete with a rotor and
heavy duty mast to raise it above the roof line. Some polite inquires
revealed that our home owners association had been forced to allow the antenna
under Federal Law.
More checking, and study makes it seem like this might really be an option
for myself as well. Most of you know that I've been chasing VUCC on
6-1.2ghz for the past year or so using nothing but an attic full of indoor
antennas.
I'm now in the process of drafting a proposal to allow the erection of a
45 foot tower my back yard, with a single log periodic antenna and rotor.
The hardline feedline would be connected to an "A/B" switch to allow the
signals to be routed to either my television set or the ham shack.
My basic question is what can of improvement am I likely to see over the
single band beams in the attic vs. a LPA? Which model would offer the best
performance? Is it going to be worth the trouble, expense, and possible
legal fees necessary?
73,
Les Rayburn, N1LF
EM63nf
121 Mayfair Park
Maylene, AL 35114
_______________________________________________
VHFcontesting mailing list
VHFcontesting@contesting.com
http://lists.contesting.com/mailman/listinfo/vhfcontesting
**************A Good Credit Score is 700 or Above. See yours in just 2 easy
steps!
(http://pr.atwola.com/promoclk/100126575x1221823232x1201398636/aol?redir=http://www.freecreditreport.com/pm/default.aspx?sc=668072&hmpgID=62&bcd=
May5909footerNO62)
_______________________________________________
VHFcontesting mailing list
VHFcontesting@contesting.com
http://lists.contesting.com/mailman/listinfo/vhfcontesting
|