Hi Jerry,

Since your vertical will not be ground mounted, radials will be even more
important now.  You'll want to at least have four radials tuned for a little
over a quarter-wave on the lowest frequency you intend to operate.  At
least, this is my best practical advice.  Hmmm, I think the ideal is
something like 64 radials tuned for slightly over a quarter wave for each
band...  :-)

----- Original Message -----
From: "Jerry Neufeld" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Sunday, July 18, 2004 9:55 AM
Subject: roof-mounted verticals


> Good morning folks.
>
> Although I have played around with numerous vertical antennas, both solo
and
> phased, all have been ground-mounted, untrapped and with many radials.
Space
> limitations where I now live preclude either horizontal antennas or
> ground-mounted verticals with adequate counter-poise. I'm wondering if
> anyone on this list has any experience or knowledge about all-band,
trapped
> verticals such as the High Gain or Butternut, used in a roof-mounted
> configuration.
>
> Regards,
>
> Jerry