[time-nuts] Vintage Frequency Measurement

[Bob Camp]

Hi

Maybe I’ve been wrong for the last many decades … 

To me a wave meter is a tuned circuit device that tells you the frequency by a resonance
peak. They are a very common old school item for microwave frequency measurement in
a teaching setting. 

https://www.britannica.com/technology/wavemeter

Bob

> On Feb 12, 2017, at 12:16 PM, Robert Atkinson via time-nuts <time-nuts at febo.com> wrote:
> 
> In a word,Wavemeters. Classic US onwas the BC221 with built in 100kHz crystal calibrator
> http://radionerds.com/index.php/BC-221
> British was the "Class D"http://www.royalsignals.org.uk/photos/classDno1.htm
> 
> For UHF and Microwave it was Lecher lines or cavity wavemeters.
> Robert G8RPI.
> 
> 
>      From: Scott Stobbe <scott.j.stobbe at gmail.com>
> To: Discussion of precise time and frequency measurement <time-nuts at febo.com> 
> Sent: Sunday, 12 February 2017, 6:08
> Subject: [time-nuts] Vintage Frequency Measurement
> 
> 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 -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
> 
> 
> 
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.