Communication Products

We develop DSSS modems, telemetry/payload receivers, and VHF telecommand transmitters for secure, flexible communication networks. Designed for defense, law enforcement, and rapid deployment scenarios, these products support multiple modulation schemes and protocols.



DSSS Modem

Product ID NM-COMM-5501
Product Name DSSS Modem
Product Description The DSSS (Direct Sequence Spread Spectrum) satellite modem, NM-COMM-5501 offers extreme flexibility for building a satellite network. Its multiple operation modes fit the diverse communication environment and its high BER (Bit Error Rate) performance assures the reliability of data links. The NM-COMM-5501 provides two operation modes (CDMA mode and FDMA mode).The CDMA(Code Division Multiple Access) mode can largely reduce radio interference from adjacent channels to meet the requirement of high-speed and high performance data link suitable for high noise radio channel.The DSSS satellite modem, NM-COMM-5501 is a high-performance, low-cost, satcom solution . Using the most advanced CDMA technology, the satellite modem NM-COMM-5501 is ideal for both low bandwidth and high bandwidth network services suitable for defense communication networks, remote/isolated areas, private network applications and for rapid-deployment SATCOM applications to support national defense, law enforcement, emergency relief and special events operation.
Key Features
  • Satellite access through FDMA and CDA modes.
  • Supports DSSS, BPSK, QPSK, OQPSK modulation.
  • Configurable data rate: 2.4 kbps to 20 Mbps.
  • Supports FEC: Viterbi and Reed Solomon.
  • Front-panel configurable.
  • Remote monitoring via RS-232, RS-485, Ethernet.
  • Asynchronous, synchronous, and Ethernet interfaces supported.
  • Mesh and star network support.
  • Linux drivers provided.
  • Built-in Test Equipment (BITE).
  • Automatic configuration recovery.
Datasheet Download PDF



Radio Telemetry/Payload Receiver

Product ID NM-COMM-6553
Product Name Radio Telemetry/Payload Receiver
Product Description The NM-COMM-6553 is a configurable receiver/demodulator integrating low and high data-rate receivers.
It supports simultaneous RF input for telemetry and payload data across VHF, UHF, L-band, and S-band frequencies.
Key Features
  • Supports amateur bands from VHF to S-band.
  • Configurable formats: AX.25, HDLC, CCSDS, raw pattern.
  • Integrated low and high data-rate receivers.
  • Demodulations: BPSK, QPSK, OQPSK, FSK, GFSK, MSK, GMSK, ASK, AFSK, FM.
  • Wide dynamic range: –130 dBm to –20 dBm.
  • Protocols: CSDS, HDLC, AX.25, SYNC WORD MATCH.
  • FEC with Viterbi decoding.
  • Doppler correction for LEO satellites.
  • Spectrum RF monitoring with front-panel status.
Datasheet Download PDF



VHF Telecommand Transmitter

Product ID NM-COMM-0880
Product Name VHF Telecommand Transmitter
Product Description The NM-COMM-0880 is a configurable modulator operating from 0.1 kbps to 38.4 kbps in the 144-148 MHz range.
Designed for telecommand modulation and high-power signal generation, it integrates robust protection and
monitoring features for reliable use in aerospace missions.
Key Features
  • Supports FSK, GFSK, 4-FSK, MSK, GMSK, ASK, AFSK, FM.
  • Data rate: 0.1 kbps to 38.4 kbps.
  • Protocols: HDLC, AX.25, SYNC WORD MATCH.
  • Supports GFSK/GMSK BT 0.3 and 0.5.
  • In-built temperature, VSWR, and fan-failure protections.
  • Forward/reverse power monitoring and fault indicators.
  • Ethernet PC/server interface.
  • 19” rack-mountable 3U case.
  • Doppler frequency compensation.
  • Front-panel LCD, keypad, and LED indicators.
Datasheet Download PDF