[Elecraft] Multi Band Dipoles

[Martin.Evans at simoncarves.com]

snip

It confirms the very dismal performance of *all* those "popular" HF short
loading-coil verticals in comparison to the most simple, basic, inexpensive
quarter-wave vertical.  TANSTAAFL!

Likewise, the horizontal antenna comparisons confirm the overall
superiority of a simple dipole over other horizontal types being tested.

snip

Mike, I've only been at this game for 12 months so can't really comment on
the comparisons but my multi band dipole works a treat. It is a home brew
set up with 3 horizontal dipoles cut for 80/40/20m one above the other with
about 1-2 feet separation at the ends. All on the same coax with no balun
or ground connection. The wire is cheap annealed solid copper PVC insulated
mains wiring cable 2.5 sq mm (slightly larger than your #14AWG). The 80m
wires take the full weight with no problems and I keep a lot of tension on
it using a very heavy weight and a pulley. The centre is at about 25feet
and the ends at 30 feet and the whole thing is pretty much in the clear.

You need plenty of patience to get everything resonant with lots of ladder
climbing, hanging out of loft windows and hoisting up and down but now I
have swr between 1.3 and 1.0 on 80,40,20 & 15. As I say I can't compare
with anything else but I get great reports with qrp using this arrangement.
When I get the time will probably put up another dipole for 30m.

Martin
M0KWV
K1#1534



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