The ADI TM-281A is a Mobile 2m transceiver. It covers 144-148 MHz for both transmit and receive. The receiver system is a Double conversion superheterodyne with IF frequencies of 1st: 10.7 MHz and 2nd: 455 kHz. RF output is 60/25/7 W. It features CTCSS / DCS and has 1 memory bank with 81 channels. The power requirements are 11-15.8 V DC. Current drain is 600 mA in receive mode and 12 A max in transmit mode. Dimensions are 40 × 140 × 166 mm.
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