Has anybody tried using the phone company as a frequency reference? Are the telco master clocks locked to GPS or national frequency sources? Or do they just use their own Cesium box?
Is that a useful way to get a good clock without a GPS antenna? I worked with T1 many years ago. It wouldn't be hard to extract a signal to feed to a PLL. Has anybody done that and collected data? I'd expect lots of short term jitter and wander but the long term should be pretty good. Does anybody know how DSL works? If I poke around with a scope in my DSL modem/router, will I find a clock locked to the telco's master clock? How many different versions of DSL are there? -- The suespammers.org mail server is located in California. So are all my other mailboxes. Please do not send unsolicited bulk e-mail or unsolicited commercial e-mail to my suespammers.org address or any of my other addresses. These are my opinions, not necessarily my employer's. I hate spam. _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
