[time-nuts] 2 out of 3 bad 5680As?

Hello, I have two units that don't produce any output and the lock pin floats around +2.3 volts continuously. The +15v load starts at about 1.8A and drops down to about 0.7A on both units, but I never get a +5V or 0V on the lock or a 10MHz out signal. (I'm not using an LED on the lock pin, just

Re: [time-nuts] 2 out of 3 bad 5680As?

, WB6BNQ wb6...@cox.net wrote: Hi Dave, A silly question, although you did not indicate, you are supplying a separate 5 volts to the unit are you not ? BillWB6BNQ Dave hartzell wrote: Hello, I have two units that don't produce any output and the lock pin floats around +2.3 volts

Re: [time-nuts] ebay warning

I received a few used units, and one was bad. I contacted nichegeek via eBay with the issue and symptoms, and they are sending me a replacement. Assuming it comes half as fast as the original shipment, and it works, my transaction will still be a positive one. On Tue, Feb 21, 2012 at 11:26 AM,

Re: [time-nuts] Thunderbolt Lady Heather 48 hour precision survey

On Fri, Nov 26, 2010 at 6:41 AM, Robert Darlington rdarling...@gmail.comwrote: I keep it in a styrofoam beer cooler surrounded with bottled water in a draft free area and it's been all over the map. Robert- Are you doing this for temperature stability? How stable is it? Dave

Re: [time-nuts] What's the latest correct PICTIC II Mouser project?

Anyone have a different/later PICTIC II parts list (or from an alternate supplier)? Thanks, Dave On Fri, Aug 6, 2010 at 1:02 PM, Bob Camp li...@rtty.us wrote: Hi I believe the project at: http://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=8736DCEE10 is up to date in (no

[time-nuts] Failure Imminent for WAAS satellite...

Interesting story. http://www.gpsworld.com/gnss-system/augmentation-assistance/news/failure-imminent-waas-geo-satellite-9841 ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

[time-nuts] Paper on comparison of man-made clocks vs. astrophysical clocks...

http://arxiv.org/abs/1004.0115 ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

[time-nuts] TADD enclosure screw sizes...

Hello, I am placing my TADD-2 into the TAPR TADD enclosure, and I need to know the size / threads of the fixed mounting posts. Anyone know? Thanks, Dave ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to

Re: [time-nuts] TADD enclosure screw sizes...

Thanks John. I picked some screws up at the local hardware store. I see what you mean about the BNC mounting... FYI, I had to bend the vertical nut ears a bit to be able to get the board in, and screwed in. I'm probably going to be operating open lid for a while just to see the LED status.

[time-nuts] Thunderbolt antenna?

Hello, I'm looking for a decent outdoor antenna for my Thunderbolt... I need to graduate beyond the puck-antenna in the window sill. Any recommendations and/or sources (the lower cost, the better of course!)? Thanks, Dave ___ time-nuts mailing list

Re: [time-nuts] Achieving maximum performance when driving 5370A/B inputs

Today I have been trying to drive a 5370B directly from a TADD-2, with little luck (other HP freq counters seem to work OK). I was about to ask about it on this list, but noticed this thread. I guess this could explain why I am getting erroneous, random readings? Dave On Sat, Feb 27, 2010

Re: [time-nuts] Achieving maximum performance when driving 5370A/Binputs

...@febo.com]on Behalf Of Dave hartzell Sent: Sunday, February 28, 2010 7:28 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Achieving maximum performance when driving 5370A/Binputs Today I have been trying to drive a 5370B directly from a TADD-2

Re: [time-nuts] Achieving maximum performance when driving 5370A/B inputs

Thanks for the tips Bruce. Is there a better version of the 74AC04? It sounds like I should also use an attenuator, perhaps 3 - 10 dB... Dave On Sun, Feb 28, 2010 at 7:43 PM, Bruce Griffiths bruce.griffi...@xtra.co.nz wrote: The TADD-2 output drivers exhibit significant ringing and

Re: [time-nuts] GPS with PPS

Can someone provide a link? I can't seem to find it... On Wed, Sep 30, 2009 at 1:50 PM, Robert Darlington rdarling...@gmail.comwrote: No, it's fluke.L (well, lowercase L), not upper case i. -Bob On Wed, Sep 30, 2009 at 2:45 PM, John Allen j...@pcsupportsolutions.com wrote: Hello All -

Re: [time-nuts] GPS, NTP, and Cisco routers...

Looks like Trimble and Cisco got together on a PPS implementation for the 7200, starting with 12.0T trainwreck: http://www.cisco.com/en/US/docs/ios/12_1t/12_1t1/feature/guide/dtrimble.html Since I don't have any 7200s any longer (thank goodness), I checked and it seems that the 6500s support

[time-nuts] Trimble GPS mouse antenna for TBolt...

Hi all, Halted has some very cheap Trimble magnetic mouse GPS antennas, for $3.95. I was able to get one to work with my Tbolt, simply by putting an F-connector on the cable. The mouse comes with a proprietary connector...not sure what the coax is.

[time-nuts] Looking for good texts on precision timing...

Hello, I'm new to the high-accuracy timing arena, and I'm looking for good books or other information on the topic in general, preferably starting from Ground Zero. Any ideas? Thanks, Dave ___ time-nuts mailing list -- time-nuts@febo.com To