[Elecraft] 630M Antenna
Ron D'Eau Claire
ron at cobi.biz
Wed Sep 20 17:49:56 EDT 2017
It can be useful to explore the really old QST and radio handbooks published
in the 1920's and earlier - especially earlier when many Hams were operating
from small urban lots on wavelengths of 300 to 600 meters.
At first glance many look much like today's wire antennas. One or more
horizontal wires above the home with a "feed line" leading up from the shack
(often in the attic). But looks are deceiving. The "feed line" is actually
the antenna - a short vertical antenna - connected to the horizontal wires
for "top loading". A robust matching network (a.k.a. "tuner") completes the
system.
Very inefficient, but also very effective under the right conditions.
However, it's clear that once HF propagation was discovered Hams stampeded
onto the "short waves" for a reason.
73, Ron AC7AC
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