This GPS Receiver Development Board with an XR7 GPS receiver chip set was made by Symmetricom in 1998. The chip technology was developed by a Global Navigation Satellite Systems (GNSS) research and development team working at Daventry, UK for its range of XR7 GPS products.

The XR7 GPS receiver chip set (see ZBA9357 and ZBA9358) was the first generationof GPS chip made by the GNSS Daventry group where an external CPU was not needed, a leap forward for the manufacture of affordable consumer satellite navigation products. The chip on this board features XR7 GPS System on Chip (SoC) technology consisting of a 12 channel GPS, an ARM 7 CPU, RAM, ROM, UARTS, time and frequency peripherals and a small section of programable hardware logic. In conjunction with the GPS RF MCM, the XR7 GPS Digital Chip Set allowed GPS-enabled products to be much smaller and lower power. Some external RAM and Flash was also needed. Silicon wafer technology: 0.35 micrometre, CMOS VLSI Ltd.