The Maxon data/telemetry radios are designed to meet the needs for a variety of wireless applications. Multiple functions including 1200 to 9600 baud rates, AC and/or DC audio coupling, GMSK, FFSK and FSK modulation are standard in these fully programmable wide bandwidth RF wireless modem units. Programmable sub-audio squelch system (CTCSS & DCS) and two-tone squelch system are newly added to the signal level detect squelch system (RSSI). GPS Data handling is provided to interface and control internal GPS receiver. Adjustable power output settings provide the optimum power required. The SD-170EX Series incorporates the most often requested mechanical footprint, DE9 male connector, and BNC antenna connection. The LED provides you instant status of the radio. The die-cast aluminum cabinet/lid provides resistance to RF interference; and gives exceptional environmental durability in the most extreme conditions.