[time-nuts] Metastability (was: Frequency Stability of Trimble Mini-T)

2008-10-19 Thread BriMDavis
Hal wrote: Back in those days, there was a lot of activity in designing kludgey circuits to fix metastability. I could usually find the flaw. It got boring after a while. The classic was a circuit to detect metastability and reset the FF. That reset signal would sometimes have runt

[time-nuts] OT- Tbolt eBay -- where in the world...

2008-10-19 Thread Rex
I was looking at one of the Thunderbolt listings on eBay today: 300260419007 I noticed that there is a picture of a Tbolt Monitor screen with lat and lon, so I put it in Google Earth. Seems to show the corner of the building where the antenna is mounted, near Shanghai. Attached is a GE

Re: [time-nuts] OT- Tbolt eBay -- where in the world...

2008-10-19 Thread Bruce Griffiths
Rex wrote: I was looking at one of the Thunderbolt listings on eBay today: 300260419007 I noticed that there is a picture of a Tbolt Monitor screen with lat and lon, so I put it in Google Earth. Seems to show the corner of the building where the antenna is mounted, near Shanghai. Attached

Re: [time-nuts] OT- Tbolt eBay -- where in the world...

2008-10-19 Thread Bruce Griffiths
Rex wrote: I was looking at one of the Thunderbolt listings on eBay today: 300260419007 I noticed that there is a picture of a Tbolt Monitor screen with lat and lon, so I put it in Google Earth. Seems to show the corner of the building where the antenna is mounted, near Shanghai. Attached

Re: [time-nuts] OT- Tbolt eBay -- where in the world...

2008-10-19 Thread Jim Palfreyman
Rex, This city is one of the most dense in the world with regard to population. And maybe it might be hard to imagine for some, but cars are not the main form of transport. Read http://en.wikipedia.org/wiki/Shanghai#Transport for a summary. Regards, Jim 2008/10/20 Rex [EMAIL PROTECTED] I

[time-nuts] Thunderbolt Group Buy, part 3

2008-10-19 Thread Tom Van Baak
Thunderbolt group buy: MORE kits and NEW price. Recently, TAPR completed all outstanding orders of Trimble ThunderBolt GPS receiver + AULT power supply kits. Those of you who ordered should have received yours by now. Since the stock of both TBolts and power supplies was limited, some of you

Re: [time-nuts] OT- Tbolt eBay -- where in the world...

2008-10-19 Thread Rex
Bruce Griffiths wrote: Rex wrote: I was looking at one of the Thunderbolt listings on eBay today: 300260419007 I noticed that there is a picture of a Tbolt Monitor screen with lat and lon, so I put it in Google Earth. Seems to show the corner of the building where the antenna is

Re: [time-nuts] OT- Tbolt eBay -- where in the world...

2008-10-19 Thread SAIDJACK
Hi Rex, I've been to Shanghai many times. Usual mode of transportation is bike, subway, bus or if you can afford it car. Lot's of electric bikes and motorcycles too of course. Since foreigners are usually not allowed to drive you will see loads of taxis too. Wonderful city to visit.

Re: [time-nuts] problem with Efratom FRS-C from eBay

2008-10-19 Thread Bob Q
Just a note on my experience with Rubidium and GPSDO I bought an OCXO from him. I had to set the control voltage to about 70 mV to get 10 MHz out, too close to 0V to work in my GPS DO circuit. The OCXO did not have a mechanical adjustment in addition to the electircal adjustment, useful