This is a wireless GPS solution that provides robust performance across various applications for driving, marine use and military applications. Added the external antenna for additional support and accuracy. Our receiver applies the latest semiconductor technology to reduce power consumption and provide robust performance. Mightygps PCMCIA receiver is one of the most powerful GPS receivers for laptops or pdas on the commercial market. $129/single unit Volume pricing: $79 @ 100 $75 @ 500 $71 @ 1k GPS PCMCIA receiver card - compatible with most pdas & laptops! Technical specification: General: D152n: Cf GPS card and PCMCIA adaptor D152nw: PCMCIA card Frequency: L1,1575.42 MHz. C/a:1.023 MHz chip rate Channels:12 channel all-in-view tracking. Antenna: One built-in on board patch and an optional active antenna via mcx connector. Accuracy: Position:25 meters cep without sa Velocity:0.1 meters/second, without sa Time:1 microsecond synchronized to GPS time Datum: Wgs-84 Acquisition rate: Reacquisition:0.1 sec. Average Cold start:48 sec. Average (external active antenna) Dynamic conditions: Altitude:18,000m(60,000 feet) max Velocity:515 meters/second(1000 knots) max Acceleration:4g. Max