The Gealog Radio Modem 1200 is a high performance modem for radio data transfer.

The Gealog Radio Modem is a modem unit to connect Gealog dataloggers via the serial RS232-interface to standard radio units via the audio-interface. Additionally there are optional several digital inputs and outputs on-board which can be used for measurement and control applications. The unit can operate both as standard radio modem and as repeater unit. Both functionalities can be used by one modem simultaneously. So measuring stations can also act as repeater stations.

Interface lines to radio-unit

• PTT (Push to Talk)
• Squelch
• Receive-audio signal
• Transmit-audio signal

Technical features

• High sophisticated adressing scheme for all network topologies
• Transfer speed: 1200 Bd
• Power supply: 12 V DC (station battery)
• Operation both as station modem and as radio repeater (store and forward)
• Optional the radio modem can be equipped with digital inputs and outputs for standalone-applications without datalogger. For simple signalling and control applications.