GPS receivers and low noise RF amplifiers

In addition to our filter and diplexer products Cross Country Wireless Ltd also produce two electronic products to order as a result of the development of our CCW RST radio survey tool.

The GPS receiver is based on the Motorola VP Oncore GPS receiver module. The Oncore GPS receiver can simultaneously track 8 satellites at speeds of up to 1000 knots and 4 g acceleration. The receiver is optimised for land based mobile operation in urban environments and is ideal for use in motor vehicles.

The GPS receiver is housed in a small weather resistant aluminium box measuring 140 x 100 x 50mm with two mounting lugs. An internal regulated power supply allows the receiver to be powered from any 9 to 20 volt DC supply with reverse polarity protection.

Internal signal processing allows the receiver to receive DGPS corrections and give an RS232 NMEA or Motorola binary code position output to a PC. The GPS receiver is fully Y2K and GPS week 1023 compliant.

We regularly use these GPS receivers ourselves as part of our radio survey tool. We have used one successfully on a high speed train (up to 125 mph or 210 kph) network optimisation survey using a GPS antenna inside the railway carriage.

The low noise amplifier is also housed in an identical box to the GPS receiver. The amplifier is designed to give 20 dB gain with a noise figure of 1.5 dB over the GSM1800 frequency allocation.



Back to Index