[ARC5] Antenna for small yard

[Bruce Long]

In reading this very long string it seems to me the question to be answered is not how to come up with an antenna that fits in the yard, but instead how to come up with a pretty good RF ground that fits into the yard.
Any antenna that fits in the yard will be electrically short, will be reactive and will have a small radiation resistance.

As has been pointed out the ARC5 transmitter was designed to be used with electrically short antennas so no problems----except--- an ARC5 aircraft installation using a short wire radiating element had the much larger aircraft body to work against as a counterpoise.
It was specified that the yard was covered with concrete pad(s).  I am not quite sure what that means,  a single poured slab or multiple lift able pre-cast pads.
With a reasonable ground or counter-poise, and the ARC5 output rollo-inductor I suspect any short wire will perform adequately.
So what can be done to get a ground system, ground rods in the corners of the yard? counterpoise attached to the lower edge of the fence?  Ground rods soaked with a bucket of water before operation?






      From: WA5CAB--- via ARC5 <arc5 at mailman.qth.net>
 To: ARC5 at mailman.qth.net 
 Sent: Saturday, October 22, 2016 1:27 AM
 Subject: Re: [ARC5] Antenna for small yard
   
Neil,

You should mention to everyone that the balcony of the second floor apartment covers slightly more than 1/2 of your back yard.  So the first half any end fed wire solution is for all intents and purposes inside of a building.

Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480
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