[time-nuts] LORAN-C demise

Mark Spencer mspencer12345 at yahoo.ca
Sun Nov 29 19:40:23 UTC 2009


Any thoughts on how complex a receiver would need to be to produce a 1 pps signal that was locked to the carrier frequency it was receiving ? Lot's of comercial transmitting equipment is designed to use an external frequency standard and if a transmitter at a high altitude site was locked to a cesium source it could serve a typical metroplitan area.   Locking an existing transmiiter to a cesium standard would not require any special signals or wave forms to be transmitted.  To be usefull the receiver would need to produce a standard 1 pps output.

Stanley Reynolds wrote: 
> How about the Volunteer Association of GPS Backup for Timing, VAGBT ?
> Propose of the group is to provide backup distribution of timing information for GPS users, via armature radio and cesium clocks. To develop many local transmit stations as possible and low cost receivers with both extended holdover and comparison to GPS to measure backup accuracy. Many low power transmitters would be required as the cost of continuous operation would be lower for each station, and the identification of less accurate stations possible if several in each location was avabile.
> Stanley
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