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"I don't know if the poster was referring to it, but QST ran an article in a
December issue, I think 1972 but it might have been 1971, by someone from Millen about their work on making a solid state version." You get a gold star on the memory test. It was December of 1972. I think it was titled "Anatomy of a Grid Dip Meter", and it was written by the chief engineer at Millen, who had led the conversion team. It is a worthwhile read for anyone who thinks of converting an rf device to solid state. In particular, the simple rf choke became a substantial barrier. The end result was multiple rf chokes and ferrite beades placed in just the right order to work at all frequencies. I recall Millen worked for days on the "simple" task of creating something that would work as an rf choke on all frequencies. Colin K7FM --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.783 / Virus Database: 529 - Release Date: 10/25/04 |
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