[Elecraft] Multi-band (Fan) Dipoles
Niel Skousen
nskousen at talisman-intl.com
Sun Apr 17 18:43:31 EDT 2011
On a similar vein... I've seen in the past an antenna that used to be a common 'emergency' antenna. I cant remember the name or dimensions, so hopefully someone can understand my description and point me to additional information.
The mult-band antenna is similar to a 3 wire fan dipole, but the elements are generally paralleled (not 'fanned out).
A dumb ascii art diagram follows with the feedpoint (a), only half of the symmetrical antenna is shown
- The middle element is approximately the length of the dipole,
- one of the outside elements is only about 70% of the full length,
- the last and longest element is folded around the end of the middle wire
with a gap (b) between the end of the short wire and the long wire.
(generally the guy wire is attached at the fold point (c)
dumb ascii art ....
---------------------. (b) ------
/ \
/ \
(a) ------------------------------------- |--(c) ---- (guy)
\ /
\___________________/
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