Why only 2 (slightly elevated) radials?
I have 10 radials at 15 ft on my Reverse Fed Elevated GP
which seems to play quite well.
I also have a wire vertical in the woods using a half-Bow Tie radiator
for better bandwidth. It is tuned for CW.
I get a 'double dip' in SWR by feeding with 1/4 WL of RG58 (50 ohm)
followed by several hundred feet of half inch CATV Hardline. SWR
is roughly 1.3 at 3.5 MHz and 1.5+ at 3.8 (and higher in between).
On Thu, 16 Jan 2003 23:14:34 +0000 "RICHARD BOYD" <email@example.com> writes:
> I'm working on an 80M vertical, fullsize, with two elevated radials.
> feedpoint is about 8' above the ground and the radials slope down
> to 5' at the tie-offs. I cut each of the wires for 70' to start
> with, to be
> able to prune. It does, in fact, resonate below the band as I
> I'm getting 290 kHz as the "low SWR" bandwidth -- that is, where the
> SWR" indication does not come on on my FT-847 that I took portable
> on a battery out to the base of the vertical. I suppose that's 2:1
> bandwidth but I guess I'd have to check my FT-847 manual to see.
> Two questions:
> 1. What is the "high SWR" bandwidth of a radio like the FT-847?
> 2. Is 290 kHz SWR bandwidth typical? I was kind of surprised it
> was that
> 73 - Rich, KE3Q
> Rich Boyd
> MSN 8 with e-mail virus protection service: 2 months FREE*
> AN Wireless Self Supporting Towers at discounted prices,
> See http://www.mscomputer.com
> Wireless Weather Stations now $349.95. Call Toll Free,
> 888-333-9041 for additional information.
> Towertalk mailing list
Sign Up for Juno Platinum Internet Access Today
Only $9.95 per month!