I guess it depends on whether you are after a frequency reference or a phase reference. My (commercial) Thunderbolt has no problem delivering 1E-10 or better over 1 second (usually MUCH better). Jitter has never been a problem for me, and I couldn't care less about holdover performance, since I don't run my own cell site.
If all you want is a reliable, plug-and-play source of 10 MHz, there are literally no drawbacks to these boxes. They just work, and $200-$250 is a fair price for them. People with Z3801As tend to fiddle with them until the cows come home in my experience, and that's fine if that's what you're into, but... wait, what list is this again? :) -- john, KE5FX > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > Behalf Of [EMAIL PROTECTED] > Sent: Thursday, February 15, 2007 7:35 AM > To: Discussion of precise time and frequency measurement > Subject: [time-nuts] Thunderbolt - Hardware Versions - > PerformanceDifferneces > > > I'm lucky enough to own a couple of Thunderbolts as well as some of the > different telecom versions and they DO NOT have the same > performance. The > commercially available Thunderbolt (the one comes in the little > red box) has > the least favorable performance when compared to the industrial versions. > > _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts