[Antennas] Vertical

[Chris Boone]

Actually, Bill, AM BC stations are only required under Part 73 to have 120
radials...but some do run less under waiver and some run NONE (those running
a Franklin) There is a point of diminishing return after 120....

Cebik shows on his web site that 4-elevated radials 10ft or so high will out
do a larger number of buried or on the ground radials..I ran a vertical with
only 4 60ft long radials off the peak of the roof (vertical was mounted on
the vent pipe)..worked like a champ on 80-10 with perfect B/W and SWR
readings...and it got out too!

BTW I know of one radio station that used salt and even a sprinkler system
to help its ground system....but had to replace the copper every few years
due to the corrosion (OUCH! :)


Chris
WB5ITT
Member SBE (Society of Broadcast Engineers)

> -----Original Message-----
> From: antennas-bounces at mailman.qth.net 
> [mailto:antennas-bounces at mailman.qth.net] On Behalf Of Dr. 
> William J. Schmidt, II
> Sent: Saturday, November 26, 2005 11:22 PM
> To: antennas at mailman.qth.net
> Subject: Re: [Antennas] Vertical
> 
> Yeah leave the "salt" for your thanksgiving dinner and use a 
> real engineering solution here...  That is unfounded 
> witchcraft.  Elevated radials are great if you have the space 
> for them (read that: get them far enough off the ground that 
> you won't trip over them/ behead yourself/ they don't get 
> caught in the mower/ etc.)... Of course 200+ buried radials 
> works too (hundreds of AM stations can't be wrong!).