[amsat-bb] Coaxial helix

Luc Leblanc lucleblanc6 at videotron.ca
Sun Oct 5 15:12:35 PDT 2008

I was given an old Helix from a SK estate. It was used in the AO-10 AO-13 era. The helix is made of an RG8-U the inner conductor is 
connected to an SO-259 and about 1/4 turn from the connector a copper metal plate is soldered to the braid. The round metal reflector is 
standard but about 10 extension radials are bolted around the plate making the reflector about 30 inches in diameter +-

With this kind of reflector it seems to be a VHF helix??? a very odd one!!! If this peculiar design seems to remember something for someone 
i will appreciate your inputs as i will try to rebuild it as she is in a very poor state.

P.S. If this antenna was really existing as it was could be an experimental one by this SK it will make's another alternative to the 
standard design but as it was made for a back mounting the counter poised should be about 5 pounds!!! quite heavy.


Luc Leblanc VE2DWE
Skype VE2DWE


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