I believe the majority of the microwave beacons (1000MHz and above) in the UK are now GPS locked for the output frequency. Most are able to maintain accuracy to a few Hz at the working frequency. Time information is obviously available at the site, but this is of less interest......to radio amateurs.
Alan G3NYK ----- Original Message ----- From: "Dan Mills" <[email protected]> To: <[email protected]> Sent: Thursday, October 13, 2011 1:42 AM Subject: Re: [time-nuts] HBG swiss time transmitter shutdown > On Thu, 2011-10-13 at 02:11 +0200, Magnus Danielson wrote: > > > I have wondered if not amateurs could set up small frequency broadcasts > > of their own. Say a 10 W transmitter or something. > > It's called a beacon and at least the UK license does allow them (25W > maximum) and there are a great many out there (mostly used for > propagation studies and the like). > Transmitter frequency stability will vary all over the shop, from non > ovenised microprocessor grade quartz, all the way up to GPS/Rb > disciplined Wenzel sprinter OCXO. > > I don't know of any carrying time standard transmissions, but that does > not mean they do not exist. > > To be of real use however a time standard transmission needs to be > reliably receivable over a wide area, with known accuracy and that is > not easy. Having a standard as the carrier generator for a longwave > station was ideal as it added little to nothing to the cost of running a > very high power transmitter, and made the carrier useful instead of just > being a waste of power. > > Regards, Dan. > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
