I plan to order the large type 31 toroids for my yagi. I was also thinking
about them for my half sloper, but then I began to wonder if a choke is
relevant for this antenna. After all, my tower is the main part of the half
sloper (connected to the coax shield); the coax runs down the tower (with about
15" standoff). Does additional coupling from the tower to the coax shield
introduce additional noise? (My primary concern is reduced receiver noise.)
I realize there are various opinions about half slopers, but mine works
modestly well on 80 meters and so-so on 160. It is attached at about the 38'
level of a 55' tower. It is better than nothing and is better than a terminated
dipole (grounded resistors at each end) with the top at about 50'.
Bill - W2WO
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