Re: [time-nuts] Another Philipe Patek clock

2015-03-31 Thread Adrian Godwin
There have been large numbers of master clocks in the broadcasting house clearance auctions over the last year. As a result there are probably quite a lot in circulation in the UK right now, though the BBC cachet put the prices above dirt-cheap. The studio slave clocks were particularly popular.

Re: [time-nuts] Trimble Thunderbolt question, splitting its output

2015-03-31 Thread Charles Steinmetz
Dave wrote: I'm not sure how to avoid the change in input impedance with the clipper involved unless I were to increase R1 to a very much higher value. The voltage noise density of a 3.3k resistor is about 7.5nV/rootHz, for a total noise of about 23uVrms in a 10MHz bandwidth (compared to

Re: [time-nuts] Another Philipe Patek clock

2015-03-31 Thread paul swed
Absolutely correct on the batteries. It depends on the type. My experience has been varied. Yes they leak but if they leak and do not spray around the cleanups much easier and just to the area of the batteries. If they were on charge and went they tend to vent vapor. Thats a serious effort to fix

Re: [time-nuts] National Positioning, Navigation, and Timing (PNT) Resilience and Security Act of 2015, H.R. 1678.

2015-03-31 Thread Fotis Georgatos
Hi Bill, On 28 March 2015 at 18:18, Bill Hawkins b...@iaxs.net wrote: It's been my experience that local daylight time change criteria are varied and fluid. How would a LORAN (or GPS) transmitter set the DST bit for everybody? This is an interesting problem, and of only 300KBs solution