The RM34 Ultra-Wideband Software Defined Modem (SDM) / 70 MHz is a purpose-built, standalone hardware platform for high-capacity data communication over V/UHF radio channels using STANAG 4691 waveforms. Designed to meet the requirements of naval and government end-users, the RM34 delivers high-performance, long-distance line-of-sight (LOS) data communications for strategic and maritime operations. With its ability to achieve data rates of up to 1.92 Mbps in 500 kHz UHF LOS channels, the RM34 offers data speed, quality, and security comparable to SATCOM systems – without the associated infrastructure.
Applications
The integrated V/UHF waveforms address the increasing need for higher throughput to support internet protocol (IP)-based data exchange and emerging high-capacity applications. These include naval and strategic situational awareness systems, enabling effective command and control (C2) across diverse operational environments.
Featuring a compact form factor and robust environmental specifications, the RM34 is ideal for deployment across diverse naval and maritime platforms, including surface vessels, submarines, and aircraft. The standard interfaces offered by the RM34 seamlessly integrate with V/UHF transceivers, cryptographic equipment, and management systems, facilitating convenient deployment in various operational environments.
STANAG 4691 Waveforms
The RM34 modem implements STANAG 4691/AComP-4691 (Edition 1), Annexes B to E, which specifies a family of V/UHF waveforms. The waveforms operate across bandwidths of 25, 100, 300 and 500 kHz bandwidths.
The RM34 supports the following waveform data rates:
- S4691 E (500 kHz) - 180 kbps to 1920 kbps
- S4691 D (300 kHz) - 112.5 kbps to 1152 kbps
- S4691 C (100 kHz) - 32 kbps to 384 kbps
- S4691 B (25 kHz) - 16 kbps to 96 kbps
- S4691 B (20 kHz) - 12.8 kbps to 76.8 kbps (Extension of Standard Annex B Implementation)
Product Family and Longevity
The RM34 belongs to a family of 19-inch rack-mount units, including the RC34 and RI34, designed to deliver STANAG 4691 (MARLIN). The RM34 guarantees a 15-year product lifecycle and 20 years of spare availability, ensuring long-term reliability and support.