RM8 Software defined Modem Modem & ALE Controller | 2G ALE & 3G ALE / STANAG 4538

RM8 Software Defined Modem & ALE – 3, 6 kHz

The RM8 is a high data rate LF & HF data modem and ALE controller for standards-based BLOS naval and strategic data communications. The RM8 extends the functions found in the RM6-A to also include the STANAG 4538 / 3G ALE Automatic Radio Control System (ARCS) function. The RM8 units are suitable for NATO BRASS & BRE1TA (BRASS Enhancements 1 Technical Architecture) shore station deployments offering split-site 2G & 3G ALE.

When combined with a naval or strategic HF radio, the RM8 can provide 3G ALE scanning, channel selection, link set-up, Linking Protection and xDL packet data.

The RM8 is suitable for long distance point-to-point data links. The RM8 extends the capabilities of the RM6 to include STANAG 4538 3G ARCS. The RM8 is intended for installation into 19” rack systems.

The RM8 can be installed as both land and ship-borne 19-inch rack equipment. Up to two units can be installed in a single 1U slot.

The function of the RM8 is determined by the selection of one of the following software packs:

  • M1: LF & HF Modem (SSB, ISB, up to 19200 bps)
  • M2: HF Modem (SSB, up to 9600 bps)

The following ALE software options are available for use with M1 and M2:

  • 2G ALE Controller Software Option
  • 3G ALE Controller Software Option
RM8 Modem
NATO Stock Number: 5895-20-011-0369
Part Number: RME-81-RA-M13.3

RM8 2G ALE Software
NATO Stock Number: 7030-20-011-9516
Part Number: RM8-SW-2G-5.3

RM8 3G Software
NATO Stock Number: 7030-20-011-9517
Part Number: RM8-SW-0-3A-5.3

Features and Benefits

High Data Rate HF Modem

  • Up to 9600 bps in 3kHz (SSB)
  • MIL-STD-188-110A & B, STANAG 4539
  • Up to 19200 bps in 6kHz (ISB)
  • MIL-STD-188-110B-F

ALE Controller

  • 2G ALE based on MIL-STD-188-141B
  • 3G ALE based on STANAG 4538
  • Concurrent 3G/2G ALE operation

Ethernet interface for remote control
Synchronous DTE port for secure data
Ethernet interface for packet data (3G ARCS)
AC & DC Power Supply

LF & HF Software Packs (M1, M2)

Software Pack
M1 M2
MIL-STD-188-110B Appendix C (QAM)
MIL-STD-188-110B (QAM)
MIL-STD-188-110B Appendix F (QAM)
MIL-STD-188-110A 5.3 (8-PSK)
STANAG 4415 (WALSH)(NATO robust)
STANAG 4285 (8-PSK)
STANAG 4529 (NB 8-PSK)
FSK Variable

2G ALE Controller Software (MS 141 B)Option

  • Individual, Group & Net Calls
  • All, Any, Wildcard Call
  • Occupancy Detection
  • Sounding & LQA Polling
  • Automatic channel selection
  • Linking Protection (AL-1, AL-2)
  • Time Exchange
  • Split-site operation

3G ALE Link Setup Controller (S 4538)

  • Fast Link Setup (FLSU)
  • Circuit Link Controller (CLC)
  • LDL & HDL + Data Link Protocols
  • Linking Protection
  • Occupancy Detection
  • Time Exchange
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