MSK Modulator

Brief description:

  • Designed for MSK modulation of correction information in the RTCM SC-104 v2.2 format
  • Support interface with reference station receiver according to the MNEA-0183 standard
  • Automatic generation of RTCM type 6 messages if the link to the reference station is down
  • The MSK modulator has two adjustable outputs
  • The MSK-2ВК modulator has one adjustable output MSK


  • The Modulator is a professional radio navigational aid
  • It provides MSK modulation of correction information received from the Reference Station in RTCM SC-104 v2.2 format
  • Meets all the requirements of the International Association of Marine Aids to Navigation and Lighthouse Authorities (IALA) for frequency range 283.5 – 325.0 kHz
  • Operates in hardware or software settings mode
  • Provides updates of flash memory firmware via interface RS-232 (FW 2.00 and higher)
  • Special circuit design provides superior stability of carrier frequency and a low level of phase noise


MSK modulator MSK-2BK modulator
Power supply voltage, DC, V 9 – 36 4.75-5.25
Power Consumption, not more than 1.5 W 100 mA
Output signal level, V 0.5±0.1
RS-232, RS422 exchange rate, bps 4800, 9600 4800, 9600*
Frequency range, kHz from 283.5 to 325.0
Discreteness of the carrier setting, Hz 500
Precision of the carrier frequency setting 2.0х10-6
Level of phase noise, dBn/Hz -120
Operating temperature range from – 10 to 50
Rate of correction information (MSK bit rate), bps 25, 50, 100, 200 25*, 50, 100, 200

Dimensions, mm 220х115х64 117х90х22
Weight, not more than, kg 0,37 – 0,085
Case type Plastic case, DIN-rail mounting PCB OEM module. Supplied without case
Indication "STATUS" Three-color LED indicator "STATUS" One-color LED indicator
Interfaces RS422, RS232 RS232
* Additional options in hardware settings mode.

Delivery set:

Modulator 1 1
NP-116 power supply connector 1 -
DB9-M plug (with D Sub Shell) 1 -
BNC-120 terminator (50 Ohm) 1 -
BNC-C58P Plug 2 1
"RS232 Data Cable (9F/9M)" 1 -
HU-4 socket - 1
HU-5 socket - 1
Manual 1 1