It might of been fairly easy to use an old NTSC television signal as a frequency reference (lumina, chroma or audio carriers). Now that it is converted over to ATSC it would be much more difficult to recover a reference frequency using readily available electronics.
You would have a much better chance of locking on to a commercial FM carrier (88-108 MHz). Some are quite accurate with less than 0.5 Hz of error. If you want both time and frequency then a GPS source is your best bet. You can get something like a ebay surplus Trimble Thunderbolt for less than $150. Tisha Hayes, AA4HA *Ms. Tisha Hayes* On Fri, Mar 30, 2018 at 5:13 PM, Hal Murray <hmur...@megapathdsl.net> wrote: > > fgr...@otiengineering.com said: > > Now that analog TV has gone away, so > > have these signals. > > What do the local TV stations use for a frequency reference? > > Are there low cost receivers that also produce a good reference frequency? > > > -- > These are my opinions. I hate spam. > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.