[ntp:questions] Can the line audio out of HF radio be used to sync ntp. Trying to get a cheap ($) radio method.

Unruh unruh-spam at physics.ubc.ca
Thu Apr 30 14:24:12 UTC 2009

Nathaniel Homier <ntp at universal-mechanism.org> writes:


>I would like to know if one can use the line audio out of any old 
>portable shortwave radio tuned to a time signal and fed via a line audio 
>input.  This would be motherboard audio.  The primary reason is that I 
>get the impression that ntp radio clocks are for sale at very high 
>prices.  The most I have to spend is about $200.  I already have very 
>nice Sony 7600G HF portable and that gets the time freq. from 2.5 to 15 
>very well.  My computer is the new pci express and I have no serial port.

If you have $200, why not get a GPS 18LVC for about $70 and pay your local
radio hobbyist to install an RS232 plug and a USB poser plug. That way you
wil get microsecond rather than millisecond accuracy.


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