A few of us in the Twin Cities recently bought the current incarnation of the BG7TBL GPSDO - I can recommend this unit for value as well as the coverage it provides on simple Patch + LNA antennas versus the older egg or dome style units. The lower power consumption versus a Thunderbolt for example is also a plus. There are a number of write-ups out there on these units, and what is available now are probably 3rd generation, at least. The particular seller I used on ebay has this listing. http://www.ebay.com/itm/171742240714?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT Shipping time was about 3 weeks. For me, this unit was a spare, and also only as a 10 MHz reference, but I have been impressed with the performance. Russ K0WFS We had a small tornado come through north of our house about 1/2 mile on > Monday. Really did a number on the antennas. Only electronics impacted > was my old Nortel GPSDO. It’s pretty much deaf now, as far as I can tell. > The Nortel always had a hard enough time obtaining the initial lock in the > past on startup, but since “the event” it’s been no joy. > So I’m in the market for a GPSDO. Key application here is as a bench > precision frequency reference. Something with good composite noise > performance close in. > If you have a suitable GPSDO in solid operational condition, kindly > contact me off list. Thanks! > 73/jeff/ac0c > www.ac0c.com > alpha-charlie-zero-charlie