The heterodyne trick has been done before the first 'Modern' frequency counter the HP 5245 used plug ins to extend its range to 18 Ghz by doing exactly that. The plug in contained a tunable LO mixer and indicator to show tuning lock
These were a pain to use but they beat the 'frequency meters' by a mile Content by Scott Typos by Siri > On Apr 26, 2017, at 2:52 PM, al wolfe <[email protected]> wrote: > > such _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
