[time-nuts] Efratom 105243-003 10MHz OCXO

Does anyone know the specs for the 10MHz output of this? I'm looking at a board using it that is terminating it with a 100kOhm resistor to ground. Yeah I know, probe it with a scope - the catch is that the equipment is currently well disassembled so I can't do that so easily ... Is the output

Re: [time-nuts] Efratom 105243-003 10MHz OCXO

Hi Pretty good bet that if it’s a 100K termination it’s a square wave output. The highest impedance you typically see on a sine wave is about 1K ohms. Even that is pretty rare on OCXO’s. Bob > On Mar 2, 2018, at 2:07 PM, David C. Partridge > wrote: > > Does

Re: [time-nuts] M12 furono

I have a unit out to Mark Sims for eval and testing with Lady Heather. Furuno isn't honoring last year's quote. For qty 100+ they quoted me $35.00 each. That was the quote for qty 1 last year. I pushed back and they dropped it slightly to $33.94 -not much of a discount and that's their 1000+

[time-nuts] M12 furono (also GT-8031)

I got in my prototype Furuno GT-8031 adapter boards in and it is working well. Lady Heather now works with the GT-8031. The M12 prototpe adapter boards have shipped from OSHPARK a couple of days ago. They might get here today. I have since updated the adapter boards to add a CR2032 backup

Re: [time-nuts] Setting Z3801 date

Thorbjørn Pedersen said: > Try this: > Disconnect antenna. > Power off / power on. > Set date correctly. (You have the commands?) > Connect antenna. > Let it survey and stabilize That's what I remember. The first problem is that the Z3801 doesn't accept dates after 2007. It gives an E-222

Re: [time-nuts] Setting Z3801 date

Hi > On Mar 2, 2018, at 5:05 PM, Hal Murray wrote: > > Thorbjørn Pedersen said: >> Try this: >> Disconnect antenna. >> Power off / power on. >> Set date correctly. (You have the commands?) >> Connect antenna. >> Let it survey and stabilize > > That's what I

[time-nuts] M12 furono (also GT-8031)

The M12 boards arrived today, but there is a small problem with them. The holes for the receiver 2x5 .050 spaced pins are too small. The Furuno pins measure around .003" wider than the Motorola pins (that fit, rather tightly) so probably also some PCB drill hole/plating tolerance issues.

[time-nuts] Setting Z3801 date

My Z3801A happily accepted a recent year (2016?) when it rolled over. You have to do the power-down, disconnect antenna, send corrected date, power down, connect antenna, power up sequence. I don't think the updated date appears until the unit starts tracking satellites again. Or, Lady

Re: [time-nuts] Setting Z3801 date

> My Z3801A happily accepted a recent year (2016?) when it rolled over. You > have to do the power-down, disconnect antenna, send corrected date, power > down, connect antenna, power up sequence. I don't think the updated date > appears until the unit starts tracking satellites again. I

[time-nuts] Fwd: [New post] New Part Day: ATMegas With Programmable Logic

nutters might find this of interest. Don Original Message SUBJECT: [New post] New Part Day: ATMegas With Programmable Logic DATE: 2018-03-02 05:00 FROM: Hackaday

[time-nuts] M12 furono

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