[Antennas] Field Day Antennas,

2002年5月13日 06:44:13 -0400

First, the original post did NOT say (s)he would put up a ~200 foot
support. It stated supposed a ~200 or greater was 'available'.
Delta loop and a tuner!!!!
Dave, W1MCE
Ronald KA4INM Youvan wrote:
>> > If you were to have a support available for an antenna for field day that was very tall,
> > ~200 feet possibly more. But could only put up one antenna on it. and wanted to use it on
> > all bands, what would it be?
> > I was thinking a full sized dipole for 80 fed with open line and a tuner. But if it was
> > placed running north south (broadside east west) in an inverted VEE configuration,
> > what would the radiation patterns be on the other bands especially on the higher bands
> > 20, 15, and 10?
>> First: 200 feet would require FAA approval, and you won't get it.
> Second: you don't want an antenna at 200 feet unless it is VHF and/or UHF.
> (putting an antenna on the municipal water tank sounds like a bad idea)
>> If you could have only a one band transceiver for field day, what band
> would you choose? Why limit yourself to one antenna? (even one multi bander)
>> The antenna you use is (should be) chosen entirely by where your operation is,
> geographically, and where you think the most contacts 4 U are lurking.
>> The band you will use during field day is determined by the prevailing
> atmospheric condx at the time, you will find you will only use the bands that
> are open. (although you can plan on using them all)
>> For a home station, a `contesting grade' multi band beam would be gud,
> or a multi element monoband yaggi on each band, each at it's best height
> above the RF reflective level in the dirt under them. And dipoles for
> every band aimed at the most people. (greatest population) Some
> locations require rotors, others don't.
>> For club field day stations, concentrate on wire antenna and push up poles
> (or trees and a casting rod), remember: the Moxin is your friend!
> Starting building your antennas at the top (80 meters) and work
> your way down (10 meters) 80 meters will always be open, 10 meters
> will generally be open the least. (over an 11 year span)
> `Field day' is a day long event, if you don't know how the MUF effects
> field day, study it.
> The best all around antenna is a tapped dipole, with insulators and an
> insulator shorting jumper on each half with one battery clip each,
> making up a 80/40/20/15/10 meter dipole, each tuned to the CW portion
> of each band, with two tent stakes, some rope, and a 40 or 50 foot push
> up pole with a pulley at the top. (no traps, lower it and add or remove
> jumper clips, pull it back up) Find a nice city or county park to have
> club field day if you can.
>> There, I feel better. (do you?)
>> 73 (= Best Regards) de: Ron [email protected]
> 100% LINUX, 100% of the time. SENT Time and Date are UTC
> Visit my HAM Web SITE at: http://www.qsl.net/ka4inm
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