[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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