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EEVblog #801 – How To Design A Digital Clock

EEVblog #801 – How To Design A Digital Clock

The next step for Ahmed Mohamed How to design your own digital clock from 4000 ...

  • tchicago

    Those Emtrons are damn intriguing devices. It could be worth doing an interview with their developers to figure out what exactly they are and how are they built. The info on their web site is mostly “for those who know” 😉

  • Worf

    So… was there actual Field Day activities?

    Field Day was created as a way to do an “emergency” test (amateur radio exists because the governments felt it served as a good backup if communications goes down – e.g., during a disaster). It usually results in various clubs hauling out generators and masts and doing a live set up on some open field with no access to infrastructure (no power, primarily).

    To encourage participation, these are often held as contests where the goal is to reach as many people worldwide as possible, though some go far enough to actually do VHF and UHF short range communications to test out repeater gear as well.

    The goal being that the VHF/UHF bands serve as local communications backup for emergency responders, while the long-range gear is used to send short messages for relay (if you’ve got a loved one in a disaster area, being able to get a simple “I’m OK” is worth tons).

    • http://www.eevblog.com EEVblog

      I think it may have been the day before. This was the flea market and presentations.

  • Wildmax

    I haven’t been to the Wyong field day for years, but yes they have many contests, including a fox hunt (radio tracking).
    When I was there they also had display setups of old radios and military gear, an auction, and though I didn’t get to see them there was a setup for what looked like some HF gear for worldwide contests.