... quality Voice Communication NLOS 2-5km,LOS more than 40km AES,ABS Encrypt MV2025TBHE-P Backpack Wireless Video duplex Transmitter ... RS232 level, supporting 1200~115200ConstellationQPSK,16QAM,64QAM (optional)FEC1/2,2/3,3/4,5/6, 7/8 (optional)Guard ... 760MHz,760MHz-860MHz (customized),1.0-1.4GHz (customized,2.3-2.5GHz (customizedFrequency is adjustable continuouslyEncryptionAES 128 bit / ALLTECH ...