I have a 5 element 20 meter beam on a 46 foot boom. The boom is 4" od tapering to 2.5' od at the ends. The elements are 1.5" diameter. This beam was made by Hy-gain. The 1967 catalog I have calls thi
The LJ-205CA is NOT anywhere near the same antenna. What Chuck, N6PSN, has is the ORIGINAL LONG JOHN series 20M yagi from late 50s/early 60s. He described the yagi correctly as having a 46 ft boom; w
Isn't it likely that an antenna from that era can be usefully improved by computer modeling? 73, Pete N4ZR The World HF Contest Station Database was updated August 4. 123 stations were added or updat
Computer modeling may improve the design. It would be interesting to see what does happen. Construction wise, and this I can not remember, if elements are mounted thru the boom as TELREX did then ext
Bob, NA6T, and I, have the 15M version of the original LONG JOHN ... it is a MONDO beam! Unfortunately, it is stored in the horizontally grounded position .. Boy, did it play at my Redding, CA contes