[BC] Ground system

[Craig Healy]

>>> The solution is an above-ground counterpoise made from Alclad or
>>> similar materials. For AM nondirectional antennas, four 1/4
>>> wavelength-long radials, insulated at their ends...
>>
>> Would it be better to use six elevated radials, but connect pairs
>> at the ends so there are three sets of more broadband versions?
>
> This is covering old ground; check the archive
> There are optimum radial lengths, just as with buried radials.

Yes, I'm well aware of this.  But I'm also aware that the voltage at the 
ends is a problem for higher powered stations.  The idea of this is to make 
broadband radials that will not be as narrowband and potentially less of a 
voltage hazard.  Using six radials paired together makes three broadband 
radials.

> The extant authority is Wm. Culpepper in Charlotrte, who has gotten
> several stations licensed with elevated radials ( I participated in
> measurements on his test site in the early 90s.) .............

Has anyone done radials as I described?  I suppose a good test would be to 
make a scale model on the 40m ham band.  Quarter wave vertical, and four 1/4 
wave radials as first described.  See what the VSWR is and what bandwidth is 
useable.  Then, change to six radials with three pairs connected at the 
ends.  Do the same VSWR test and compare the results.  If the end voltage is 
lower and the bandwidth is greater, that same design would apply to AM 
stations.  This 40m ham band test probably could be done in an afternoon at 
minimal cost.

Craig Healy
Providence, RI