On Wed, Apr 11, 2012 at 7:19 AM, Bob Bownes <[email protected]> wrote:
> The issue is that this treats the t'bolt as a sacrificial item. I would > contend that, at a cost of $80-90, you could spend far more time and effort > trying to isolate, amplify, correct, and bias the antenna than that is > worth. Effort and gear that would need to be replaced every time I thought of that right after I suggested using fiber data lines. You'd loose a few expensive t-bolts. But I think there is a better and cheaper way to go: Buy a cheap Motorola Oncore receiver. The Oncore UT costs all of about $18 on eBay, buy four of them. The only signal you need to bring into the workroom from an Oncore is PPS and that is "way easy" to do using fiber. The other signals (rs232) can be connected as needed and that is not often. Then you build a "standard" GSPDO in the workshop. The initial cost is lower and the engineering is simple (because only the PPS has to go over fiber) The Oncore and GPSDO can give as good of result as the t-bolt. It mostly depends on how good the OCXO is, maybe even you build two GPSDOs running off the same PPS the second one being Rubinium based. My $35 Rb can holdover for many weeks (at the level I need) if GPS is down. Then you can install the t-bolt with an antenna you can disconnect and only use the t-bolt now and then during good wearer to double check the GPSDO that you can leave running 24x7 Chris Albertson Redondo Beach, California _______________________________________________ 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.
