Last Updated: 08/15/2006
Please note that the equipment below is no longer in production
This photo show the 8 channel Motorola UT ONCORE GPS receiver (top board) and my interface board with battery backup supply and optional PC power Y-Cable. This cable can be used to pick up +12 VDC from your PC's power supply. An optional wall mounted power supply can also be used to power the receiver.
The manual for the ONCORE receiver (in PDF format) can be downloaded here (2.5 megabyte zip file).
Status: Please see note above
This photo shows my ONCORE Interface board and mounting hardware without the GPS receiver installed. The interface board has the following features:
- Interfaces with the Motorola ONCORE series of 8-Channel GPS Receivers
- Supplies regulated +5 VDC to the GPS receiver using a high efficiency switching power supply
- Large input voltage range of +7 to +40 VDC
- Buffered 1 Pulse per Second output
- Converts the serial data to and from the GPS receiver to standard RS-232 voltage levels
- Standard RS-232 9 pin connector mounted directly to the interface board
- 1 Pulse per Second output on the RS-232 DCD line
- 1 Pulse per Second status LED
- Battery backup input (+3 to +5vdc) to keep information in the receivers RAM during loss of main power
Cost - This item is no longer for sale.
This photo shows the GPS antenna I can supply.
Specifications:
- Constructions: Polycarbonate radome enclosure, die-cast-shell at the bottom, water proof rubber gasket seals
- Dimensions: Length 58mm (2.3 in) Width 48mm (1.9 in) Height 15mm (.6 in)
- Weight: 63 grams (w/o cable & connector)
- Mounting: 2 magnet mount and/or screw mount with 2 M3 tapped holes on die-cast base
- Cable and Connector: 5 meter (16 feet) RG174/U cable and MCX right angle connector
- Amplifier Gain: 26 dB min. compatible with the ONCORE GPS receiver
- Amplifier Noise Figure: 2.5 max.
- Center Frequency: 1575.42 MHz +/-1.023MHz
- Output Impedance: 50 W
- Current drain: 12 ma max. at 5 volts DC
- Operating Temperature: -40° C~ +85° C.
- Water Resistance: 100% waterproof
Cost - $35.00 USD Status: This item is in-stock
GPS Timing System Cost
- Interface Board and Mounting Hardware - Cost $50.00 each, add $5.00 for the PC Power Y-Cable.
- New GPS Antenna - Cost $35.00 each
Optional Wall Mounted DC Power Supply - Cost $10.00 each.
Please contact me at the email address below if you would like to order a system or if you have any questions. Please see How to Order for more information on ordering and paying for your order.
I have a Windows based program called WinPlotGPS that can be used to plot and display location information from the GPS receiver.
This GPS system will also work with CNS System's Tac32 and Motorola's WinONCORE GPS display programs.9 Pin Serial Connector Pinout:
Pin 1 - One pulse per second output. This is the DCD or Data Carrier Detect line.
Pin 2 - Serial Data Output
Pin 3 - Serial Data Input
Pin 4 - Not Connected
Pin 5 - Ground
Pin 6 - Not Connected
Pin 7 - Not Connected
Pin 8 - Not Connected
Pin 9 - Not Connected
Power Requirements:
The complete timing system, antenna, GPS receiver and interface board, requires ~ 185 milliamps at 8 VDC, 147 MA at 10VDC, 125 MA at 12 VDC or 100 MA at 15 VDC.
Please see SDR's GPS documentation for more information.
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