Peter

This Canadian RCA apparatus was also called wavemeter but is a heterodyne frequency meter and a signal generator. https://www.pa3esy.nl/military/us/meet/TE149/html/te149_set-gb.html iov >----Messaggio originale---- >Da: "Tim Shoppa" <tshoppa@gmail.com> >Data: 15/02/2017 17.29 >A: "Discussion of precise time and frequency measurement"<time-nuts@febo.com> >Ogg: Re: [time-nuts] Vintage Frequency Measurement > >For those of us who have to translate between the old "cps" and the modern >"Hz", I found this handy conversion table on the web: >http://www.aqua-calc.com/convert/frequency/hertz-to-cycle-per-second > >Tim N3QE > >[image: Inline image 1] > >On Tue, Feb 14, 2017 at 5:29 AM, Peter Vince <petervince1952@gmail.com> >wrote: > >> On 14 February 2017 at 04:23, Raj <vu2zap@gmail.com> wrote: >> >> > I have a Marconi T.F. 643 C, in Megacycles ! >> > >> >> Ah, a sensible, descriptive name for the unit. Some of these modern units >> really do Hert(z) :-) >> >> Peter >> _______________________________________________ >> 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. >> >_______________________________________________ >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.

 Peter

Hi Silly Canadians :) It seems that the term either has drifted a bit over the last 70 years or there is indeed another British / US difference here. Bob > On Feb 15, 2017, at 5:00 PM, iovane--- via time-nuts <time-nuts@febo.com> wrote: > > This Canadian RCA apparatus was also called wavemeter but is a heterodyne > frequency meter and a signal generator. > > https://www.pa3esy.nl/military/us/meet/TE149/html/te149_set-gb.html > > iov > > >> ----Messaggio originale---- >> Da: "Tim Shoppa" <tshoppa@gmail.com> >> Data: 15/02/2017 17.29 >> A: "Discussion of precise time and frequency measurement"<time-nuts@febo.com> >> Ogg: Re: [time-nuts] Vintage Frequency Measurement >> >> For those of us who have to translate between the old "cps" and the modern >> "Hz", I found this handy conversion table on the web: >> http://www.aqua-calc.com/convert/frequency/hertz-to-cycle-per-second >> >> Tim N3QE >> >> [image: Inline image 1] >> >> On Tue, Feb 14, 2017 at 5:29 AM, Peter Vince <petervince1952@gmail.com> >> wrote: >> >>> On 14 February 2017 at 04:23, Raj <vu2zap@gmail.com> wrote: >>> >>>> I have a Marconi T.F. 643 C, in Megacycles ! >>>> >>> >>> Ah, a sensible, descriptive name for the unit. Some of these modern units >>> really do Hert(z) :-) >>> >>> Peter >>> _______________________________________________ >>> 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. >>> >> _______________________________________________ >> 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. > > > _______________________________________________ > 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.

 Peter

1960's frequency counters <http://www.radiomuseum.org/r/phywe_zeitmess_und_zaehlgeraet.html> <http://www.radiomuseum.org/r/rohde_elektronischer_zaehler_fe.html> using a counting tube E1T different from the usual dekatron <http://www.radiomuseum.org/tubes/tube_e1t.html> On Wed, Feb 15, 2017 at 11:54 PM, Bob Camp <kb8tq@n1k.org> wrote: > Hi > > Silly Canadians :) > > It seems that the term either has drifted a bit over the last 70 years or there is indeed > another British / US difference here. > > Bob > >> On Feb 15, 2017, at 5:00 PM, iovane--- via time-nuts <time-nuts@febo.com> wrote: >> >> This Canadian RCA apparatus was also called wavemeter but is a heterodyne >> frequency meter and a signal generator. >> >> https://www.pa3esy.nl/military/us/meet/TE149/html/te149_set-gb.html >> >> iov >> >> >>> ----Messaggio originale---- >>> Da: "Tim Shoppa" <tshoppa@gmail.com> >>> Data: 15/02/2017 17.29 >>> A: "Discussion of precise time and frequency measurement"<time-nuts@febo.com> >>> Ogg: Re: [time-nuts] Vintage Frequency Measurement >>> >>> For those of us who have to translate between the old "cps" and the modern >>> "Hz", I found this handy conversion table on the web: >>> http://www.aqua-calc.com/convert/frequency/hertz-to-cycle-per-second >>> >>> Tim N3QE >>> >>> [image: Inline image 1] >>> >>> On Tue, Feb 14, 2017 at 5:29 AM, Peter Vince <petervince1952@gmail.com> >>> wrote: >>> >>>> On 14 February 2017 at 04:23, Raj <vu2zap@gmail.com> wrote: >>>> >>>>> I have a Marconi T.F. 643 C, in Megacycles ! >>>>> >>>> >>>> Ah, a sensible, descriptive name for the unit. Some of these modern units >>>> really do Hert(z) :-) >>>> >>>> Peter >>>> _______________________________________________ >>>> 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. >>>> >>> _______________________________________________ >>> 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. >> >> >> _______________________________________________ >> 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. > > _______________________________________________ > 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.

It may be that they were all once regarded as Wavemeters, i.e. for measuring wavelength, but there was a distinction that is often dropped... the Absorption Wavemeter, as opposed to the "normal" variety. Much like a video recording almost universally referred to as a "video"... a video what? :-) Mike On 15/02/2017 22:54, Bob Camp wrote: > Hi > > Silly Canadians :) > > It seems that the term either has drifted a bit over the last 70 years or there is indeed > another British / US difference here. > > Bob > >> On Feb 15, 2017, at 5:00 PM, iovane--- via time-nuts <time-nuts@febo.com> wrote: >> >> This Canadian RCA apparatus was also called wavemeter but is a heterodyne >> frequency meter and a signal generator. >> >> https://www.pa3esy.nl/military/us/meet/TE149/html/te149_set-gb.html >> >> iov >> >>

http://tf.nist.gov/general/pdf/2423.pdf

http://leapsecond.com/pend/pdf/1934-Tomlinson-Recent-Developments-Timekeeping.pdf
via http://adsabs.harvard.edu/full/1934Obs....57..189T

Another nice example of "before there were frequency counters": "Methods of using standard-frequency radio transmissions", 1934 http://tf.nist.gov/general/pdf/2423.pdf "Recent developments in precision time-keeping", 1934 http://leapsecond.com/pend/pdf/1934-Tomlinson-Recent-Developments-Timekeeping.pdf via http://adsabs.harvard.edu/full/1934Obs....57..189T /tvb