LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
  #18   Report Post  
Old February 14th 14, 06:21 PM posted to rec.radio.amateur.antenna
external usenet poster
 
First recorded activity by RadioBanter: Aug 2013
Posts: 393
Default RV/Mobilehome RF gnd systems.

Jeff Liebermann wrote:
On Fri, 14 Feb 2014 10:08:58 +0000 (UTC), Brian Reay
wrote:

I'm looking for 'out of the box' ideas, I can fit in a camping 'pitch' and
setup /tear down quickly.


Ok, I won't mention the standard solutions, such as grounding it to
your motor home, elevated ground systems, or giving up on the vertical
(which needs a ground to act as a counterpoise) and installing a
horizontal dipole, which doesn't need the ground.


The reason I use a vertical is it avoids the need for supports, European
pitches tend to be small and running a dipole over an adjoining pitch may
be an issue.



For out of the box ideas, I suggest you try

1. Attach a ground wire to a tennis ball. Flush the ball down the
toilet and into the sewer hookup. Eventually, it will hit the
campground septic tank, which will make an excellent ground.


In Europe, the toilets are not on the pitch.

2. Find a roll of welded wire fencing. Notice that I said welded,
not galvanized or twisted. Roll out the fence wire onto your campsite
and park you mobile home on top of it. You now have a ground.


That I like.


3. Dump some water on the ground around the campsite. As long as
it's wet, it will conduct, and you have a ground.



4. Do your camping in a swamp or over quicksand. Just push a ground
rod into the wet ground and you're done. Be sure to equip your mobile
home with pontoons, or you may have that sinking feeling.


Neither will make a huge difference to the RF gnd. properties compared to
'normal' dirt. You need to be in sea water for that and my XYL isn't keen
on boats.

5. The problem with using the a mobile home as a ground is the
insulating tires. What you need is a way to connect the aluminum
camper to the ground directly. Most mobile homes have leveling jacks.
Instead of the usual 4 jacks, install several dozen jacks, some of
which have sharp points that push into the ground. That should take
care of the insulating tires.



The other issue is, with the antenna mounted near the real ground, you will
have a huge lump of grounded metal in the near field. Far from a good idea.


Thank you for the input.

73
Brian
G8OSN/W8OSN
www.g8osn.net
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
RF Systems MTA. m II Shortwave 33 July 12th 08 10:28 PM
RF Systems MTA. Brian Denley Shortwave 0 July 9th 08 12:14 AM
RF Systems MTA. RHF Shortwave 0 July 7th 08 07:57 PM
RF Systems DX 1 Pro Mk II [email protected] Shortwave 6 June 10th 07 07:17 PM
RF Systems MTA Larry Echols Shortwave 0 October 1st 03 02:50 AM


All times are GMT +1. The time now is 10:30 AM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Copyright © 2017