The P4dragon DR-7800 is a no compromise HF modem that outpaces products 3x the price.   The Dragon line of modems are for people serious about their data.

The DR-7803 adds Class 1 Bluetooth for a no compromise wireless connection between your P4Dragon modem and PC.

IstarGPS HS4 MkII High Speed GPS with Barometer sensor and MotionSense - the heart of your navigation system

The SCS Tracker / DSP TNC is the first Terminal Node Controller (TNC) to use a Digital Signal Processor (DSP) for signal processing and modem operation. The close relationship between the DSP hardware and the modem protocol enables new functions and capabilities.