Amateur Radio Digital Modem, a modem for PSK, RTTY and CW


The digital modem is a battery powered, light-weight, field use standalone device that is capable of encoding and decoding various popular digital modes on ham radio bands. With a built-in high performance DSP core, the modem helps to demodulate and modulate the various ham radio digital modes without a PC. This handy device uses a graphic display for the transmitted and received text data, as well as for showing band spectrum and tuning. Connect it to your small and lightweight SSB transceivers like FT-8×7, KX3 or other QRP rigs, plug in a USB PC keyboard, a portable digital station is ready to go. A micro-SD is used to keep the QSO logs and the modem’s system logs. A USB HOST port is provided for connecting a PC keyboard or a USB cable to PC for firmware uploading. A RTC (real-time clock) is also built inside, and all of the information during a QSO is showed on a 128*64 LCD. The unit could be powered from 2 AA-Size or one cell of Lithium Battery (not provided due to air shipment regulations), and the total power dissipation is less than 0.5W. By the way, the firmware is updatable, for futuer supporting some new digital modes.


Note: Due to the air shipment restrictions, no batteries are includeded the package, you need to prepare the battery by yourself. 2 AA-Size batteries or 1 cell of flat Lithum battery can be used in this modem.


  • Supported Modes: BPSK31, BPSK63, QPSK, QPSKR, RTTY, CW (New Modes May Be Added By Updating The Firmware)
  • Input And Output Ports: USB-HOST, Mini-Din6, 3.5mm Stereo
  • Display: 3.5″ 128×64 LCD
  • Power Supply: 2 AA-Size Battery Or Single Cell Lithium Battery
  • Power Consumption: Less Than 0.5W
  • Size: 160 X 65 X 27 Mm





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