Jeff Thomas GPSII Clock

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1 year 10 months ago #7288 by Ian
Please reply to this post if you are interested in receiving more information about the clock. The article is here:

http://tubeclockdb.com/user-submitted/354-jeff-thomas-gpsii.html

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1 year 10 months ago #7289 by Robert L.
Hi folks,

I've subscribed to the thread and will be glad to respond to any questions folks might have...

Many thanks for your interest!
Bob




Jeff Thomas GPSII Nixie Clock for sale

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1 year 10 months ago #7291 by Ian
Hi Bob,

just saw a question about the GPS module on the main site. I know you are not notified of changes there, so copying here so you get a notification:

0 #1 Greg Peetros 2016-12-07 02:15
Would your upgrade work with the Motorola Oncore GPS?
The following user(s) said Thank You: mldenison

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1 year 10 months ago #7293 by mldenison
Hi Bob,

I have the same clock. Would it be possible to purchase the upgraded board and puck from you?

Thanks,
Mort Denison

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1 year 10 months ago #7295 by GregP
Hi Bob,

I was the guy who asked about the Oncore upgrade.

What I'm looking for is a plug and play board that would replace the Motorola Oncore GPS that Jeff used in the GPSII and NixiSat. The NixiSat used a BNC connector (which was directly mounted to the enclosure) with a wire pigtail to MCX plug to connect to the Encore.

I'd like to somehow retain the aesthetics of the NixiSat to be as original as possible by retaining the BNC connector. Looking at the pictures of your board, the wiring terminal used for the GPS puck would not fit the cavity of the NixiSat

I guess the only way to pull off what I want would be to find a GPS module that outputs a true 1PPS signal and somehow make it work. Way above my pay grade.

Let me know if you have any thoughts or need additional info on the NixiSat.

Thanks!

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1 year 10 months ago - 1 year 10 months ago #7296 by Robert L.
Hi Greg,

There's probably a 4-wire connector that would fit the case cutout and look very similar. Jack shown below could work with less than perfect cosmetic match.

An Oncore form factor also possible for the receiver card... I'm thinking I'd use a 1/8" TRRS audio style connector on the adapter board if I do a spin. That would address clearance and there are widely available extension cords of various sorts.

Photos showing the proposed TRRS connctors for a new adapter pcb are attached. A possible jack added as well.

One concern - does the NixiSat speak NMEA sentences, or is your Oncore speaking the proprietary Motorola protocol? The Garmin does not speak Motorola. I selected jumpers for an Axiom receiver on my GPSII as the Axiom speaks NMEA.

If you can post a couple close-in detail photos of the Oncore and antenna connector on the NixiSat it would help me understand.

B
Attachments:
Last Edit: 1 year 10 months ago by Robert L.. Reason: Oncore compatibility details

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1 year 10 months ago #7297 by GregP
Hi Robert,

The NixiSat is definitely a BNC connector. The problem with replacing the BNC in the NixiSat enclosure is Jeff glued these to the wood. Trying to remove would most likely damage the finish or possibly destroy the wood. I'm sure you may be able to apply a heat gun to it, but you still run the risk of damaging the finish.

This is why I wanted to retain the BNC if possible. Unfortunately, the BNC is a two conductor.

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1 year 10 months ago #7300 by Robert L.
Hi Mort,

I'm trying to get in touch with you off-line...

B

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1 year 10 months ago - 1 year 10 months ago #7301 by Robert L.
Got it... I'd need at least three wires, likely 4... +5VDC, GND, TXD, 1pps. BNC is just not going to do it.

B
Last Edit: 1 year 10 months ago by Robert L.. Reason: Spelling

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1 year 10 months ago - 1 year 10 months ago #7302 by mldenison
Hi Bob,

I got a reply notification. I guess this board doesn't have a PM function or allows emails to members. Not that I can find.
Last Edit: 1 year 10 months ago by mldenison. Reason: Removed my email.

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