RM Family
High-performance, standards-compliant, HF and VHF/UHF data modems for strategic, naval and commercial platforms.
The RM Product Family is engineered for users who require high-performance best-in-class products that fully comply with the current standards for satellite independent beyond line-of-sight (BLOS) strategic, maritime, narrowband and wideband HF and VHF/UHF data communications. The RM products provide excellent environmental specifications with respect to temperature, shock, vibration and MTBF.
The family includes HF and VHF/UHF data modems (conforming to MIL-STD-188-110A, MIL-STD-188-110B, MIL-STD-188-110C – wideband HF, STANAG 5069, 4285, 5065, 4529, 4415, 4539 and 4691), Automatic Link Establishment (ALE) functions for 2G ALE (conforming to MIL-STD-188-141A, MIL-STD-188-141B and MIL-STD-188-141C), Automatic Link Establishment (ALE) functions for 3G ALE (conforming to STANAG 4538 FLSU) and 3G Packet Data Modems (conforming to STANAG 4538 xDL). The RM family modems provide data services in satellite-denied environments.
Products in the RM Family forms part of the Naval and Strategic and the Governmental and Security divisions.
Products at a glance
RM12 Wideband SDM & ALE – 48 kHz
The RM12 Wideband SDM & ALE is a data modem designed for beyond-line-of-sight (BLOS) data communications in wideband HF channels. Building on the success of the RM10, it supports bandwidths of 3 to 48 kHz, enabling reliable radio links over vast distances. Ideal for navies, coast guards, and strategic organisations, the RM12 is a critical tool for for transcontinental, transoceanic, and maritime operations—even in satellite-denied environments.
RM10 Wideband SDM & ALE – 24 kHz
The RM10 HF Modem & ALE – 24kHz follows in the footsteps of the RM8 offering MIL-STD-188-110C (24 kHz, 120 kbps) waveform and the 4G ALE (WALE) capability – software option. The RM10’s small size, shock and vibration tolerance, low power consumption and high-temperature range is aimed at integration into crowded cabinets. With WBHF spectrum at a premium, this modem affords system integrators a price-competitive entry into the WBHF arena.
RM8 Software Defined Modem & ALE – 3, 6 kHz
The aim at RapidM with the RM8 was to become the global benchmark for the 3G ALE/STANAG 4538 standard. This unit finds service in many HF systems including NATO BRASS and BRE1TA split-site shore stations. The code base in this unit is embedded in numerous high-power HF transceivers. These ½ of 1U format products are also available as quad versions to save space in the cabinet.
RM6-A Data Modem & ALE Controller
The RM6-A is a high data rate LF and HF data modem and ALE controller for standards-based BLOS naval and strategic data communications. The RM6-A supports MIL-STD-188-110A/B, STANAG 4539 and related modems and MIL-STD-188-141, App A (2G ALE) and App B (Linking Protection). The RM6-A is a replacement of the RM6 modem and it is recommended for new systems.
RM5 Rugged High-Speed Modem
The RM5 is a MIL-STD-188-110A/B HF data modem with a rugged, field-hardened enclosure. The modem is created with disaster relief agencies in mind. These agencies often need standardised interoperability in harsh and unpredictable environments. The unit also fits well with military and paramilitary organisations.
RM2 HF & V/UHF Data Modem
The RM2 was designed for governmental agencies and NGO’s requiring standards-compliant HF email service. This compact modem offers BLOS HF data modem and 2G ALE capacities, and a VHF data modem for faster email delivery over LOS VHF channels.
Product Comparison
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| RM Family Products Comparison | RM12 Wideband SDM & ALE – 48 kHz | RM10 Wideband SDM & ALE – 24 kHz | RM8 Software Defined Modem & ALE – 3, 6 kHz | RM6-A Data Modem & ALE Controller | RM5 Rugged High-Speed Modem – 3 kHz | RM2 HF & V/UHF Data Modem |
Use |
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| Naval and Strategic | ||||||
| Government and Security | ||||||
| Industrial/Commercial | ||||||
Installation |
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| 19-inch Rack-Mount | ||||||
| Desktop | ||||||
HF Modems and Protocols (MIL-STD/STANAG) |
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| Wideband HF Data Modem (MS110D, 3 – 48 kHz) | ||||||
| Wideband HF Data Modem (MS110C, 3 – 24 kHz) | ||||||
| HF Data Modem up to 19200 bps (2×3 kHz, 2-ISB) | [ ] | [ ] | ||||
| HF Data Modem up to 9600 bps (3 kHz, SSB) | ||||||
| 4G ALE / WALE (141D, 3 – 48 kHz) | ||||||
| 4G ALE/WALE (141D, 3 – 24 kHz) | [ ] | [ ] | ||||
| 3G ALE (S4538 FLSU) | [ ] | [ ] | [ ] | |||
| 3G Packet Data (S4538 xDL) | [ ] | [ ] | [ ] | |||
| 2G ALE | [ ] | [ ] | [ ] | [ ] | [ ] | [ ] |
V/UHF Modems and Protocols (MIL-STD/STANAG) |
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| S4691-B MARLIN (20/25 kHz) | [ ] | |||||
Use with (see RC product family) |
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| RC12 Wideband ARQ & IP Controller – 240 kbps | ||||||
| RC10 ARQ Server and IP Controller | ||||||
| RC8 S5066 ARQ Server and IP Gateway | ||||||
Interfaces |
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| Local Control (Screen and Keypad) | ||||||
| DTE Sync., Std. and High-speed Async. Modes | ||||||
| DTE RS-422 (Balanced) and RS-423/RS-232 (Unbalanced) | ||||||
| Data RS-232 (RX, TX, RTS, CTS, DCD) | ||||||
| Data Std. and High-speed Async. Modes | ||||||
| Data Ethernet | ||||||
| Data/Control (Combined) Ethernet | ||||||
| Remote Control Ethernet | ||||||
| Remote Control RS-422 | ||||||
| Remote Control RS-485 | ||||||
| Remote Control RS-232 | ||||||
| Remote Control Protocol: RAP1/RIPC | ||||||
| Remote Control Protocol: ASCII S5066, Annex E | ||||||
| Radio Audio: 1 Radio | ||||||
| Radio Audio: 2 Radios | ||||||
| Radio Digital Audio: Vita 49.2 | ||||||
| Radio Control: 1 Radio, RS-232 | ||||||
| Radio Control: 2 Radios, RS-232 | ||||||
| Radio Ethernet | ||||||
| Auxiliary Audio | ||||||
| External GPS (RS-232) and PPS In | ||||||
| GPS Antenna (MCX), Internal Receiver | [ ] | [ ] | ||||
Security |
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| External Bulk Crypto Interface | ||||||
Power |
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| AC Input | ||||||
| DC Input | [ ] | [ ] | ||||
| DC Power from Radio | ||||||
Availability Status |
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| Available | ||||||
| Replacement and Spares Only |
[ ] = Option