So far all the answers are about high-end expensive equipment. There were also low cost frequency meters. I have one 40 years ago that was not expensive. It wa a simple "frequency to voltage" circuit that drove an analog meter. It was made just before the digital multimeters came out, maybe in the 70's Sold for well under $100. I think these were the most common type. The others being described here were WAY behind the hobbyist's budget
On Sun, Feb 12, 2017 at 5:39 AM, Dan Rae <dan...@verizon.net> wrote: > On 2/11/2017 10:08 PM, Scott Stobbe wrote: > >> I was inspired recently coming across a Lampkin 105 frequency meter, as to >> how frequency measurement was done before counters. >> >> Certainly zero-beating a dial calibrated oscillator, would be one >> approach. >> >> >> Google BC-221 and you may get some idea of how those worked. I just wish > I could find the one hidden in my garage :^) > > Dan > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/m > ailman/listinfo/time-nuts > and follow the instructions there. > -- Chris Albertson Redondo Beach, California _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
