[HCRA] Long Wire Antenna & Rhombic for 2
dickbolt at his.com
dickbolt at his.com
Mon Dec 20 11:35:30 EST 2004
500 feet of wire is a bit much for S/W listning alone. If you were to put hat
up and support it at the ends ( an impossible task in it self!), its likely to
generate static charge it self even without lightning!
I remember the WPI antenna that did emit static charges.
I made a rhombic for 2 meters that was 450 feet down the center & 40 feet
accross the mid section once. It was only 40 feet up & supported by trees with
pulleys and insulated where the supports held the main line. I could pull the
main lobes in when listining to beacons up & down the East coast.It was made
from #22 hook up wire. It was fed by a coax balun & uses 50 ohm coax where the
close end was over the house roof. As I remember, the termination resistance
should have been around 500 ohms without balun. It was almost as good as a 14
ele beam I had in tropo, but of course could not rotate. It might have been
better in longer distances, but was never tested. There was no termination
resister, so was bi-directional.
There were several stations in US & Australia that used 2 meter rhombic
antennas for moon bounce. One had in mid West had stacked several for 2 meters.
Dick W1DGA, ex HCRS member & old fart off active ham radio
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