Jeff Davis <[EMAIL PROTECTED]> made an utterance to the qrplist gang ---------------------------------------------------------------------- On Sep 5, 2005, at 7:24 AM, Thom R LaCosta wrote:
I have a very antenna compromised location....it's a row(town)house that's 11 feet wide, 25 feet long and a 10 foot deep yard. So...if I can get on the roof, I can play with end endfed wire...or a really short loop, or maybe a vertical. Is there any advantage/disadvantage of creating an rf ground by laying out chicken wire mesh over the roof? I'm getting ready to use a cold coat on the roof...and can lay down the wire, if it will help.
I'd be tempted to try a "sorta square, horizontal loop ... if you can get four short posts (PVC or wood) up, one on each corner, then let those support the "sorta-square loop wire up a few feet about the roof.
I don't think there would be any disadvantage to laying a grid of wire mesh or just wires on the roof before coating it, but I would provide yourself several places where you can tap into it in various locations.
Only other thing to keep in mind is that if you make it an effective RF ground it will be over your head which probably means it will be less useful at reducing stray currents inside your building - but at QRP levels and with a balun at the feed point I'm not sure that's a serious consideration.
73, -- Jeff, KE9V ---------------------------------------------------------------------- Submissions: [email protected] Unsubscribe: [EMAIL PROTECTED] - unsubscribe qrplist in body Hopelessly Lost: [EMAIL PROTECTED] - help in body of message Zerobeat Web Page: http://www.zerobeat.net - sponsored by www.tlchost.net ----------------------------------------------------------------------
