Re: [time-nuts] Lucent KS-24361 GPS Time vs. UTC

2014-11-27 Thread Mitchell Janoff
: text/plain; charset=us-ascii Hi Which port are you putting the commands into? The box *may* respond to some things on the Diag port that it does not respond to on the PPS port. I have not investigated this, but it is a possibility. Bob On Nov 26, 2014, at 12:52 PM, Mitchell Janoff majan

[time-nuts] Lucent KS-24361 GPS Time vs. UTC

2014-11-26 Thread Mitchell Janoff
I now have my KS-24361 operating and I've successfully communicated via RS232 (using the hack described previously) with both SatStat and GPSCon using Win7. The time I'm getting out of the unit is the GPS time (+16 seconds). I've tried to convert the time to UTC by first changing the mode from

Re: [time-nuts] 1903 Railroad self-Winding / Self-setting Clock: rapid clicking

2014-11-02 Thread Mitchell Janoff
The rapid clicking of slave clocks in schools was a design feature of IBM (and later Simplex) clocks. The master clock sent out minute pulses to the slave clocks for the first 50 minutes of each hour on the A side of the circuit. Slave clocks operating on-time would automatically switch to the

Re: [time-nuts] 1903 Railroad self-Winding / Self-setting Clock (Bob Camp)

2014-11-01 Thread Mitchell Janoff
I have Arduino and Parallax BS2 programs that check the time from a Motorola GPS card (UT) and then send out a pulse on an electronic relay once an hour. The pulse starts at 59:57 past the hour and ends at 59:59. The solenoid releases on each clock pretty close to the hour, and the clocks

[time-nuts] Maker Faire Sept 29 30 NY Hall of Science

2012-08-21 Thread MITCHELL JANOFF
I'm working on a Time-Nuts based exhibit at the 2012 MakerFaire in NYC (http://makerfaire.com/newyork/2012/). The idea is the history of time distribution with a focus on modern timekeeping (1900 to the present). It is a non-commercial booth, focused on education, and demonstrating

Re: [time-nuts] No more 60Hz, How do I discipline 120VAC 60Hz from a UPS

2011-06-26 Thread Mitchell Janoff
Last year I picked up a frequency standard that inputs 120VAC (or 12V DC) and drives a 6 0Hz Synchron motor based clock and also has a 120V 60 CPS output on the back. I wasn't sure what I was going to do with it, but now I know I can run my old telechron synchronous clocks with this when the power

Re: [time-nuts] Self winding clock co. Weatern union clock

2010-01-30 Thread Mitchell Janoff
Corby, I've been working with and collecting self-winding clocks for about 15 years and have about 20 that are synchronized hourly to a 2 second pulse from an Oncore GPS receiver connected to a Parallax BS2. In order for the synchronizer to function properly, the minute hand must be mounted so

[time-nuts] T-bolt vs z3816a

2010-01-14 Thread Mitchell Janoff
My z3816a no longer locks to GPS. While it still outputs 1 PPS and 10MHz, it doesn't track any satellites. I've checked the GPS card and it locks outside the unit, so I don't think that's the problem. I've decided to replace it and was wondering if I should get another z3816a or T-Bolt. They would

[time-nuts] Vintage Precision Test Equipment Available

2009-08-16 Thread Mitchell Janoff
A friend of mine and collector of precision test equipment recently passed away. His wife would like to clean out the house and dispose of his collection quickly. She is looking for a single buyer and if no one is interested, she'll turn it over to a liquidator. I've posted the majority of the

[time-nuts] Datum 9390-6000 GPS Lock Problem.

2009-04-15 Thread Mitchell Janoff
Greetings. I have Datum 9390-6000, serial #2748 running firmware ET816KP. This is the model with the Rubidium frequency standard and it runs fine other than it looses the satellite lock and then can't re-lock. In some cases after power on/off sequences it will re-synch, but generally looses the

[time-nuts] PPS Divider (John Ackermann N8UR)

2009-04-01 Thread Mitchell Janoff
In your post, you mentioned that the TADD-2, will have six low impedance outputs that can be individually jumpered to 1 PPS or 10 Hz through 10 kHz outputs. I was wondering if there was a way to provide outputs of 100k, 1MHz and 5MHz (assuming a 10MHz source). I am looking for a way to use a

Re: [time-nuts] z3816a Issue

2009-03-26 Thread Mitchell Janoff
Thanks for the suggestion. I was partially successful in changing the log. and Lat, but the unit now shows in Hold mode. When I send it commands, I get back the message receiver timeout, Last error -350 Queue overflow and the return code is E-221. Also, it is no longer tracking any satellites and

[time-nuts] z3816A Problem

2009-03-25 Thread Mitchell Janoff
I'm having a problem with my Z3816A. The health monitor and self tests show the unit is fine, but it never moves out of the Power-up GPS acquisition mode. I've tried several antennas (one of them currently working fine on a z3801 unit). The z3816A shows it is tracking anywhere from 0 to 6

Re: [time-nuts] Hahl Pneumatic and Self Winding Clocks

2009-03-14 Thread MITCHELL JANOFF
I'm in the process of connecting my Hahl clock to a GPS based standard. I've tested quite a few ideas for the Hahl clock and I found that what works best is the small squeaker from a dog toy. By compressing the squeaker on the odd minutes and releasing pressure on the even minutes, the slave

Re: [time-nuts] time-nuts Digest, Vol 45, Issue 7

2008-04-03 Thread MITCHELL JANOFF
There is a great line in the new (you'll get it shortly) Nut and Volts where someone writes in saying they finally bought a new computer only to realize there was no parallel port. They wanted to know how they were going to use their 3 printers connected via a switch. The answer fromNV was,you

Re: [time-nuts] Datum 9390-6000 Problem

2007-11-11 Thread Mitchell Janoff
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Thanks all for your help. I've replaced and shortened the coax from the high-gain antenna to the 9390, but with no change. Still the lock and tracking LED's are not lit. This antenna works fine with my 3816 and 3801. My next

[time-nuts] Datum 9390-6000 Problem

2007-11-10 Thread Mitchell Janoff
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Greetings all. I have a Datum 9390-6000 with the Rubidium frequency standard inside that has been working fine for the past year or so. It requires a high gain antenna and I'm using a Symmetricom 58532A L1 antenna. With this

[time-nuts] DataChron 3070 Question

2007-03-18 Thread Mitchell Janoff
I have a DataChron 3070 Time-code Generator that I want to use as a time display and time-code generator. It has an external frequency input, but I can't find any switch that would allow me to turn off the internal oscillator and use an external supplied frequency. It has switches on the front