This product is no longer available.

Motorola discontinued the VP in August of 1999.

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By design, the ONCORE™ family of GPS receivers is built with the same underlying receiver architecture, each incorporating the same Motorola GPS custom I.C.'s (Integrated Circuits), the same Motorola GPS receiver software and the same Motorola MPU (Micro Processor Unit) processing power. Add reliability, responsive support and the long-term commitment you've come to expect from Motorola, and you understand why ONCORE™ is the quality choice.

These units will be useful with current APRS software and the TAC-2 (Totally Accurate Clock) kit designed by Tom Clark, W3IWI.

As well as the MIC-E kit for APRS tracking.

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TAPR Power Supplies for GPS Receivers

Read about the recommended TAPR power supply and RS-232 interfaces for the Motorola ONCORE™ VP.

• Motorola Oncore VP Interface Board Kit by McKinney Technology
• Totally Accurate Clock,
  
• APRS™ MIC Encoder™
  
• DGPS Reference Station
  

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Documentation

Operating the Motorola GPS Engines In NMEA-0183 Mode McKinney Technology, Doug McKinney (rtf, 20K)

ONCORE™ Product Summary (VP, UT, GT) (pdf 3.0 format, 547K)

ONCORE™ VP Engineering Notes (5 pages) (pdf 3.0 format, 1377K)

Motorola ONCORE™ GPS I/O Software Commands (pdf 3.0 format, 617K)

ONCORE™ Software Enhancements for Timing Applications (pdf 3.0 format, 296K)

Heading Accuracy for ONCORE™ (pdf 3.0 format, 279K)

ONCORE™ Active Antenna System (pdf 3.0 format, 253K)

1999 Rollover in GPS Time (pdf 3.0 format, 225K)

• Tech Notes courtesy of:
  
  "Motorola's leading ONCORE™ GPS Distributor in North America."

General Characteristics
Receiver Architecture	8 channel L1 1575.42 MHz C/A code (1.023 MHz chip rate) Code plus carrier tracking (carrier aided tracking)
Tracking Capability	8 simultaneous satellite vehicles
Performance Characteristics
Dynamics	Velocity: 1000 knots(515 m/s) > 1000 knots at altitudes < 60,000ft. Acceleration: 4 g Jerk: 5 m/s3 Vibration: 7.7G per Military Standard 810E
Acquisition Time (Time To First Fix,TTFF)	20 sec. typical TTFF hh (with current almanac, position, time and ephemeris) 45 sec. typical TTFF (with current almanac, position and time) 2.5 sec. typical reacquire
Positioning Accuracy	Less than 25 meters, SEP (without SA) [DoD may invoke Selective Availability (SA), potentially degrading accuracy to 100 m (2dRMS)] DGPS accuracy 1-5 meters typical
Timing Accuracy(1 pulse Per Second, 1 PPS)	130 nanosec. observed (1 to) with SA on In position hold mode, <50 nanosec. observed (1 to) with SA on
Datums	49 std. datums, 2 user defined, default WGS-84
Serial Communication
Output Messages	Latitude, longitude, height, velocity, heading, time, satellite tracking status (Motorola Binary Protocol) NMEA-0183 Version 2.00 (selected formats) available Software selectable output rate (Continuous or Poll) Broad list of command/control messages TTL interface
Electrical Caharacteristics
Power Requirements	5±0.25 Vdc 50 mVp-p ripple (max)
Power Consumption	1.1 W @ 5V
Physical Characteristics
Dimensions	Receiver 2.00 x 3.25 x 0.64 in. [50.8 x 82.6 x 16.3 mm]
Weight	Receiver 1.8 oz. (51g)
Connectors	Data/Power: 10 pin (2x5) unshrouded header on 0.100" centers RF: Right Angle MCX (subminiature snap-on)
Environmental Characteristics
Operating Temperature	Receiver Module -30ºC to +85ºC
Humidity	95% noncondensing +30ºC to +60ºC
Altitude	60,000 ft.(18km)(max) > 60.000 ft.(18 km) for velocities <1000 knots
Miscellaneous
Optional features	1 PPS timing output Raw measurement data On board LNA option for use with passive antenna
DGPS	Differential GPS-standard software feature RTCM-104 format (remote input) Motorola custom format (master output and remote input)