[time-nuts] Frequency counter questions

[John Franke]

And there was the HP 540 and the HP 2590B... I still use a HP 2590B for frequency measurement and in conjunction with a HP 851B display as a spectrum analyzer.


John WA4WDL

> 
>     On June 8, 2017 at 8:35 AM Scott McGrath <scmcgrath at gmail.com> wrote:
> 
>     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 <alw.k9si at gmail.com> wrote:
> > 
> >         such
> > 
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> >     >