[time-nuts] Yukon power

Mike Naruta AA8K aa8k at comcast.net
Thu Apr 8 16:15:26 EDT 2010


Here's a photo of one of the ones I use
when on gasoline generator emergency power.

Not exactly GPSDO accuracy.

If I hit the edge of the meter against
my palm, I see a moving sine wave pattern
in the reeds.



Dick Moore wrote:
> 
>>
>> This reminds me of something a power company engineer
>> once told me:
>>
>> "High frequency" is 61 Hz.  "Low frequency" is 59 Hz.
> 
> I remember being in the powerhouse at Bonneville Dam on the Columbia River in the mid-fifties and seeing round-bezel vibrating reed frequency meters with 5 reeds in 0.5Hz steps -- 59, 59.5, 60, 60.5, 61. The square ends of the reeds were painted white to make them easier to see, and they had about a 1/4" p-p motion at center freq. Don't know if they were part of a control loop or just monitors. Tallies well with what the engineer told Rick.
> 
> Dick Moore
> 
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