Figt ] . Schematic of the Sfx meter converter using low plate voltage tubes.
Ray Vath WB2FYB 1 334 Teaneck Rd. Te a neck, N.J. 07666
After reading about all the activity on the first UHF band allocated to amateurs, I decided it would be quite a bit of fun to try and get a signal on the air. After reading plenty of articles about the construction of all kinds of transmitters, I decided to experiment with one of my own; using a type of antenna coupling 1 liad discovered while playing around on 220 mc. It may not look as though it would work, but this tripler works well and there are quite a few fellows who wi'l testifv to it, A few are WA2JVO, WB2COZ and W2NTY as they have all heard the signal to prove it,
Construction i his tripler is built on a 4x8 inch piece of aluminum which in turn is mounted on top of a 4x8 aluminum box. Construction should he exactly as the template indicates.
Starting at the grid end LI and L2 should be resonant at the frequency of 144 mc. It is a good idea to check it with a grid dip oscillator if you have one available.
L3A and L3B are four and a half inches long, bent down at the tube end one half inch so they are on the same plain as the part of the bytterfh variable to which you wili solder, L4 is a 1/4 inch loop which is standard for diis frequency except it is grounded at one end.
L5 is a lour and a half inch piece of wire
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