Re: 4 Metre Converter - but which design?
The design in the 1963 ARRL Handbook was also in the 1962 and 1964 editions, and possibly later ones. The design was originally published in "A Complete Two Band Station for the V.H.F. beginner, Part IV - Crystal-Controlled Converters for 50 and 144 Mc", by Ed Tilton, W1HDQ, QST, October 1961, pp 28-33, 164 and 166.
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