From: '''newspam'''@nonad.co.uk   
      
   On 08/01/2026 04:56, Jan Panteltje wrote:   
   >> Jan Panteltje wrote:   
      
   >> I am wearing a Casio radio watch that automatically syncs to DCF77   
   >> https://en.wikipedia.org/wiki/Casio_Wave_Ceptor   
   >>   
   >> I also have a Rubidium 10 MHz reference generator from ebay.   
   >>   
   >> I think maybe use a 10 MHz piezo mounted against the watch as detector?   
   >> There are several piezo sensors for that frequency,   
   >> From:   
   >> https://duckduckgo.com/?q=10+MHz+Piezo+sensor   
   >>   https://acs-international.com/instruments/transducers/piezo   
   lectric-1-10-mhz/   
   >>   
   >> Or maybe you can just pick up the watch's 10 MHz oscillator with a small   
   antenna close to the watch,   
   >>   
   >> Check / try with your shortwave radio on SSB with local oscillator should   
   hear a tone.   
   >> Then build a small RF 10 Mhz tuned amplifer?   
   >   
   > Or 32 kHz if that is the crystal.   
      
   Watches are almost always 32kHz crystals at ultra low power.   
   Higher frequencies require too much current!   
      
   --   
   Martin Brown   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)