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Sentry projects in Elementary Electronics Magazine.

Discussion in 'Electronic Basics' started by Steven Swift, Nov 7, 2005.

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  1. Steven Swift

    Steven Swift Guest

    While cleaning out this weekend, I found a small collection of
    printed circuit boards that I got from Elementary Electronics 1967-68.
    They're not really worth anything, but it would be fun to know what
    they are. I can't find them using Google. The dates are scratched on
    the boards and the names are part of the etch.

    1: Sentry Multivibrator, May 1968
    2: Sentry Lo-Frequency Oscillator, March 1968
    3: Sentry Hi-Lo Bander, July 1968
    4: Looks like a wireless mic, no name (has 9V, ANT, SW and MIC on
    the etch), Sentry, Nov 1967

    These were distributed via blister pack (IRC).

    Just curious.

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