[time-nuts] TAPR Oncore M12+ kit

Gregory Beat w9gb at icloud.com
Tue Mar 28 14:47:39 EDT 2017

Larry -

Interface Boards for Motorola (and Garmin) receivers have been discussed (and sold) by TAPR since late 1990s.  TAPR archives all of this documentation, for discontinued GPS kits, can be seen on the left margin.

Tom Clark, W3IWI Total Accurate Clock (TAC) project (1996) covers the entire topic.

Simple interface board schematics (Serial Level converters, and voltage adjustments for external antennas/ 3.3 or 5 V) can be found throughout the Internet since mid-1990s.
Numerous radio amateurs DIY their own (breadboard) or sold small interfaces at hamfests (1996-2006), until newer GPS solutions became surplus (and smartphones with built-in GPS appeared after 2007).

Doug McKinney, KC3RL (SK, December 2006) offered interface boards for the Garmin (GPS-25) and Motorola receivers until about 2005.  I have one of Doug's boards in my GPS parts box.  These were sold by TAPR until their inventory was exhausted.

Synergy M12-MB board (web link to photo [jpg] below)
IF you look closely at the Synergy Board, you see the board outline and 2x5 (10-pin) header for the earlier 8-channel Motorola receivers


Sent from iPad Air

> On Mar 28, 2017, at 12:18 PM, Larry McDavid <lmcdavid at lmceng.com> wrote:
> What "OEM supplier?" Do you mean from Synergy Systems? Or, is there an enclosure supplier to Synergy?
> Do you know if there is a schematic of the Synergy interface board available?
> Larry W6FUB
>> On 3/27/2017 9:31 AM, Gregory Beat wrote:
>> The TAPR offering is a "partial kit" from the Synergy's SynPaQ/E product.
>> Here is that data sheet:
>> http://www.synergy-gps.com/images/stories/pdf/synpaq%20product%20data%20sheet%20040110.pdf
>> Blank aluminum end-plates can be fabricated, or purchased from the OEM supplier.
>> w9gb
> -- 
> Best wishes,
> Larry McDavid W6FUB
> Anaheim, California  (SE of Los Angeles, near Disneyland)

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