Re: [time-nuts] Rooftop antenna and splitter

> On Jan 27, 2019, at 05:28, Bob kb8tq wrote: > > With things like the uBlox F9 now out on the market cheap …. I would go with > an antenna that will do L1 / L2 / L5 and work with everything that it up > there. Like these?

[time-nuts] Fw: CGSIC Bulletin: GPS Testing Notice Concerning the GPS Week Number Rollover

FYI - Original Message - From: U.S. Coast Guard To: Sent: Monday, January 28, 2019 11:16 AM Subject: CGSIC Bulletin: GPS Testing Notice Concerning the GPS Week Number Rollover All CGSIC, GPS Testing Notice Concerning the GPS Week Number Rollover The Global Positioning System

Re: [time-nuts] PPS clock module

On Mon, January 28, 2019 3:24 pm, John Ackermann N8UR wrote: > Hi Corby -- that's an interesting idea! [5061A or 5065A clock] > But the current would be a problem. PHK's replacement 5065 clock should not pull much power: http://phk.freebsd.dk/hacks/HP5065A/20160112_working_clock/index.html "the

Re: [time-nuts] PPS clock module

On Mon, January 28, 2019 4:15 pm, Chris Caudle wrote: > PHK's replacement 5065 clock should not pull much power: > http://phk.freebsd.dk/hacks/HP5065A/20160112_working_clock/index.html Although after re-reading the description more closely I do not think that is exactly what you are looking for.

Re: [time-nuts] PPS clock module

Hi Corby -- that's an interesting idea! But the current would be a problem. I've gotten a few good ideas from the group and should be able to get something going. John On 1/28/19 11:30 AM, cdel...@juno.com wrote: John, The clock modules from the 5061A and 5065A take a 1PPS input! I

Re: [time-nuts] PPS clock module

John Wow it took that long to get to you. Curious. I posted just after you asked. I understood the no reinventing the wheel. Totally agree. Been there done that. Looks like a nice module and if I am right its $19. Cheap. Hope it helps you. Regards Paul WB8TSL On Mon, Jan 28, 2019 at 4:04 PM djl

Re: [time-nuts] HP Stories: A Service Engineering perspective of the 5061A/B, and the incomparable Chuck Little

I read that technical description from the 1970s of how a cesium standard works, with the 137 Hz modulation and all.  Fascinating.  Maybe I will try to build one.  How hard can it be?  Maybe someone should offer a kit. Those guys at HP were amazing.  Not so much that it's a complicated scheme,

Re: [time-nuts] PPS clock module

Aha! cosidering opportunity cost, not overkill at all! On 2019-01-28 07:38, John Ackermann N8UR wrote: On 1/27/19 5:18 PM, Tim Shoppa wrote: Today - get an Arduino Nano clone ($3) and a 6-digit-7-segment module or dot matrix module ($10). Hi Tim -- Yup, that's probably the answer in the

[time-nuts] PPS clock module

John, The clock modules from the 5061A and 5065A take a 1PPS input! I have several I can sell. However they are not suitable for a portable app as they are power hogs! Although they do have a circuit that kills the display if the standard is on battery power, you can then push the button on

Re: [time-nuts] HP Stories: A Service Engineering perspective of the 5061A/B, and the incomparable Chuck Little

Hugh knew Chuck a lot better than I did because he actually worked with him. However, Hugh confirmed my opinion of Chuck 100% based on my many casual interactions with him. First of all, Chuck started in 1956, and already had 23 years in when I started in 1979. It is an extremely bad idea to

Re: [time-nuts] PPS clock module

On 1/27/19 6:53 PM, paul swed wrote: This is what I found http://qrp-labs.com/clockn I have to say there are a lot of arduino code clocks since its a typical starter project but you are right John. Doesn't seem common. Regards Paul WB8TSL That's very interesting and the price is right; thanks!

Re: [time-nuts] PPS clock module

On 1/27/19 5:18 PM, Tim Shoppa wrote: Today - get an Arduino Nano clone ($3) and a 6-digit-7-segment module or dot matrix module ($10). Hi Tim -- Yup, that's probably the answer in the end, even though it's way overkill. 73, John ___ time-nuts

Re: [time-nuts] PPS clock module

Hi Bill -- That's quite a nice design -- very simple but with a few additions would do the job. Thanks! John On 1/27/19 5:54 PM, Bill Beam wrote: I went thru this several years ago and ended up home brew with the following circuit:

Re: [time-nuts] PPS clock module

I run my workshop clock off the 1PPS output from a Jupiter GPS receiver. The 1PPS drives a 0-59 TTL counter that displays seconds on two Nixie tubes. The one pulse per minute output is conditioned to drive a Standard Electric Time Co. secondary movement. I find it interesting to have a clock

Re: [time-nuts] PPS clock module

John: a little fiddling, but: epay #172166404085 Don On 2019-01-27 15:54, Bill Beam wrote: I went thru this several years ago and ended up home brew with the following circuit: For adjustment of time indication I added switches to

Re: [time-nuts] PPS clock module

hi, i made many digital clock circuits. They are made always by using standard cmos with 12 to 15 volt power supply. high supply voltage means high noise tolerant circuits, very necessary for lowering error probability particularly in a time keeping task! It is easy to build up the counter chain.