Re: [time-nuts] Boeing 787 GPS reception trouble

2014-06-03 Thread nuts
On Mon, 2 Jun 2014 20:18:00 +0100 Bill Woodcock wo...@pch.net wrote: I'm posting this from inside an Ethiopian 787, on the ground, with the doors closed. I just completed a fifteen-minute voice call initiated from inside the plane, with reasonable reception and no drops, while the doors

Re: [time-nuts] NS3kview Software for CW25 receiver

2014-06-03 Thread Donal Geoghegan
Hi Garry, I work for Navsync. There is no command available in that standard version for firmware for the FTS125 project for this. We have a beta version which adds the GPZDA NMEA message and also adds a Zone command. The zone command updates a 'local hours' field in the GPZDA message with a

Re: [time-nuts] NS3kview Software for CW25 receiver

2014-06-03 Thread timeok
On Tue 3/06/14 1:46 PM , Donal Geoghegan wrote: - Message sent via Atmail Open - http://atmail.org/ ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to

Re: [time-nuts] Boeing 787 GPS reception trouble

2014-06-03 Thread Chuck Harris
nuts wrote: Regarding radiation, I've used my Geiger counter at mile high altitudes in Nevada and never got a count per second, even with the gamma shield not used. You can look at the DOE CEMP stations: 1 Mile high is still on the ground compared to an airplane's 8 miles high. Those 7

Re: [time-nuts] Boeing 787 GPS reception trouble

2014-06-03 Thread Jim Lux
On 6/3/14, 5:51 AM, Chuck Harris wrote: nuts wrote: Regarding radiation, I've used my Geiger counter at mile high altitudes in Nevada and never got a count per second, even with the gamma shield not used. You can look at the DOE CEMP stations: 1 Mile high is still on the ground compared

Re: [time-nuts] Boeing 787 GPS reception trouble

2014-06-03 Thread Chuck Harris
Jim Lux wrote: ... makes an interesting point that a number calculated back in the 60s (orders of magnitude too high) has achieved urban legend status. The correlations I was mentioning were for amateur measured fluxes while flying at about 40,000 ft. One thing worth mentioning is that all

Re: [time-nuts] VNA design

2014-06-03 Thread Scott McGrath
The 8410 is what I started on. Still have the hp 85 automation manuals program listings and tapes.And the hp ad converter used to convert plotter output lines to GPIB readable data the 8410 allowed one to really UNDERSTAND the network analysis process at a very basic level. If you can

Re: [time-nuts] VNA design

2014-06-03 Thread Dr. David Kirkby
On 3 June 2014 16:54, Scott McGrath scmcgr...@gmail.com wrote: Where are the software options for the 8753 coming from. Agilent will not even talk about a VNA that's older than the PNA series This has been discussed on the HP/Agilent mailing list. Basically a couple of people that work at

Re: [time-nuts] VNA design

2014-06-03 Thread paul swed
Boy this is not time-nuts and I had been deleting the thread. No problem with the thread. Just I have HP VNAs. Yes including what caught my eye the 8410 that Scott spoke of and its still operational. Heavy as heck like real equipment should be. I am curious I sort of thought the 8410 was pre micro

Re: [time-nuts] VNA design

2014-06-03 Thread Dr. David Kirkby
On 3 June 2014 19:22, paul swed paulsw...@gmail.com wrote: Great comment by Dave on the fact that someone will give out some of the old options. Now I have to figure out what on earth that might actually mean. Regards Paul WB8TSL There are a few options for those VNAs. These are basically

[time-nuts] for sale: HP 5105A vintage frequency synthesizers

2014-06-03 Thread Stan Searing
I have a couple of these lovely old heavy synthesizers that I don't have room for. 100 kHz to 500 MHz in 0.1 Hz steps with a cool search function. Hewlett Packard 5110B frequency drivers are included. I hope I'm not imposing on the list with this post, but they are very frequency related (and were

Re: [time-nuts] VNA design

2014-06-03 Thread paul swed
My bad the 8757 is only a scalar not a vna like the 8410 and 8505. Thought I went astray and had to go look after you mentioned the options. Regards Paul. WB8TSL On Tue, Jun 3, 2014 at 3:32 PM, Dr. David Kirkby drkir...@gmail.com wrote: On 3 June 2014 19:22, paul swed paulsw...@gmail.com

Re: [time-nuts] WWVB paper in May 2014 IEEE communications...

2014-06-03 Thread Brian Inglis
On 2014-05-31 12:22, Scott Newell wrote: At 08:01 AM 5/31/2014, Bob Camp wrote: Hi Well that's a bit more information. We seem to be missing the deployment schedule on the other new modulation formats. I kind of doubt that the watch and clock guys are going to start the fabs turning out

[time-nuts] combining same frequency for redundancy

2014-06-03 Thread Tony Greene
About 50 years ago I ran into a Frequency Division Multiplexer that used a redundant master frequency system. I beleive they combined the same frequency for the master oscillator, but it was something like a special hybrid combiner. I remember that they used a phase angle of 135 degrees -

Re: [time-nuts] combining same frequency for redundancy

2014-06-03 Thread Magnus Danielson
On 06/04/2014 05:22 AM, Tony Greene wrote: About 50 years ago I ran into a Frequency Division Multiplexer that used a redundant master frequency system. I beleive they combined the same frequency for the master oscillator, but it was something like a special hybrid combiner. I remember