[ARC5] Antenna for small yard

[AKLDGUY .]

Well it's a long string because there might be a lot of readers who need to
fit an antenna into a small yard at very low height. It seems there are no
list members who have actually built such an antenna and matched it to the
milsurp rigs.

The yard is covered with 12" x 12" concrete pavers, so burying a
counterpoise is not possible. It is possible to drive a ground rod into the
ground at the outer corners, but a vertical antenna is not an option due to
proximity of tenants above.

A counterpoise running along the bottom rail of the fence is a good idea.

73 de Neil ZL1ANM


On Sun, Oct 23, 2016 at 3:47 AM, Bruce Long via ARC5 <arc5 at mailman.qth.net>
wrote:

> 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
>
> ______________________________________________________________
> ARC5 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/arc5
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:ARC5 at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
>
> ______________________________________________________________
> ARC5 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/arc5
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:ARC5 at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/arc5/attachments/20161023/102c29d9/attachment-0001.html>