Mr. Yuri Eremeev

There is a easy way to fix your problem and provides everything you ever wanted. Buy a Surplus GPS unit from a company called, Communications Surplus for about $50. Their web page address is www.commsurplus.com.

I bought the Trimble SVeeSix-CM3, 6 Channel Differential Module and Magnet Mount Antenna for $49.95. Once you establish lock, which is easy just point the antenna up toward the sky, it will provide you with a clock source via an rs-232 connection at 2400 baud. The clock is accurrate to one secound every 20 million years. I think this should satisfy your needs.

Regards,

Charles Bannister