Also Motorola and Schomandl had similar instruments-I have one of the latter here I'm still trying to get a replacement meter for. The Gertsch and Motorola instruments were very similar to look at but not identical. The Schomandl was distinctly different with its tall vertical design. DaveB, NZ
> -----Original Message----- > From: time-nuts [mailto:[email protected]] On Behalf Of Mike > Garvey > Sent: Monday, 13 February 2017 2:36 a.m. > To: 'Discussion of precise time and frequency measurement' > Subject: Re: [time-nuts] Vintage Frequency Measurement > > Look at (Singer) Gertsch Frequency Meter. This was standard measuring > equipment in our (spectroscopy) lab in 1975. > Mike > > -----Original Message----- > From: time-nuts [mailto:[email protected]] On Behalf Of > Neville Michie > Sent: Sunday, February 12, 2017 05:20 > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] Vintage Frequency Measurement > > Back in the early sixties I worked in a lab adjusting filters for line > transmission. > We had numerous oscillators, built to be boat anchors, and CROs set up > for X-Y display. > The lab had 100hz, 1kHz, 10kHz standards wired in. > We were expert at recognising lisajou figures. We might have several > oscillators running together, and we could establish almost any > frequency with precision. > Calibting an oscillator would not have been difficult. > > Cheers, Neville Michie > > > > > On 12 Feb 2017, at 5:08 PM, Scott Stobbe <[email protected]> > 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. > > > > Is there a standout methodology or instrument predating counters? > > _______________________________________________ > > 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. > > _______________________________________________ > 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. > > _______________________________________________ > 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. _______________________________________________ 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.
