Continuing with clocks from yesterday
I did get all my manual clocks set, finally. Some like the Spartus alarm clock bought over 4 decades ago are easy, just wind the hands back an hour. Some like my bath scale are impossible without instructions. I finally found them in the internet, printed them and taped them to the back.
One that I've had trouble with is the Elecraft K2 clock in the KAF2 audio filter. Usually it only has to be set after years go by when the coin cell is dead so I don't remember the setting method. I found this video from the user, Utubebaf, with helpful tips on setting the K2 clock:
source: https://www.youtube.com/watch?v=RwNsp35GFxs
It is hard to get it exactly right on the second though. I finally gave up and just noted that I'm 1 second fast. I wanted to do a starting point setting for a test of the accuracy of the clock with the TCXO mod I made using the DS32kHz TCXO from Dallas Semi.
Here is a page from the notebook when I first installed the TCXO:
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| accuracy is pretty decent, better than the 1 minute/year spec |
Here is the now discontinued board I used to sell for the DS32kHz:
http://wb9kzy.com/ds32khz.htm
BTW, inventory does show some boards in stock so email if you are interested. The DS32kHz chips are also available:
As far as radio clocks are concerned, the Sony 2010 shortwave is the easiest clock to set. Just press and hold the button marked clock set and then use the tuning dial to set the time, then let go and the clock runs. Unfortunately it is good that setting is easy because the clock doesn't keep good time. It does use a 32.768 kHz crystal so a TCXO sub is possible. But I never attempted it because there isn't much space in the radio and there are flying leads and multiple boards. Just not easy to repair in my opinion. But the clock is easy to set !
Best Regards,
Chuck, WB9KZY
http://wb9kzy.com/ham.htm
