Hal Murray wrote: >> versus junk GPSDO >> > > It's not junk. > > What are you interested in? Short term stability or long term accuracy? > I'm glad to hear that the Thunderbolt is not classed as 'junk'... :-)
Personally, what I want to do is two things. 1. Keep my PC clock within a reasonable time frame when compared with other PC clocks for Amateur Radio data mode transmissions. In this case, the actual time seems less important than the effective time between the other station and myself, so that we don't try to transmit at the same time, or receive at the same time. What that time is, is not that critical, as far as I can see. As long as we both agree when to transmit and when to receive. 2. I want to keep various transverters reasonably on frequency when compared to other people who may, or may not, be 'on frequency' so that we have a better chance of finding one another on UHF and SHF bands when we set a frequency to transmit or receive on. The Thunderbolt 10MHz GPSDO seems ideal for this second application. The more accurate and stable the better, of course, but in comparison with some older transceiver or transverter designs the Thunderbolt option to lock in a frequency should be far in advance of many of the older hit and miss operations when trying to agree upon what frequency is in use on the SHF bands. From what I can make out, the next technique to address is to use SDR technology to identify when someone is even a few Hz away from where you think they might, or should, be. The pursuit of perfection is a laudable goal, but it can obscure the original objectives that you wanted to reach, in my opinion, if you are not careful. Dave (G0DJA) _______________________________________________ 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.