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Signaling Items

FM TRANSMITTER & RECIVER (TX/RX)

SPECIFICATION NO. : IRS : S 98/2001

DESCRIPTION :

It is used for BLOCK WORKING in Single line sections (Both RE and NON - RE) of INDIAN RAILWAYS. The instrument is designed to work on 24V DC voltage (normal) with variation between 19.2V to 28.8V. It works on Frequency modulated ( FM ) system utilizing FM TRANSMITTER & RECEIVER to immune from the effects of extraneous interference.

 

TECHNICAL SHEET :

The instrument is designed to work on 24V DC voltage (normal) with variation between 19.2V to 28.8V. It works on Frequency modulated ( FM ) system utilizing FM TRANSMITTER & RECEIVER to immune from the effects of extraneous interference. Maximum Current drawn by the internal circuit is not more than 700mA and by the line circuit is not more than 110 mA during normal sequential operation. The instrument is suitable to work with a temperature variation from 0 °C to 55 °C with relative humidity of 95% at 40°C. Locking and sealing facilities are also provided in the instrument to prevent un-authorised tampering.

  • INTERNAL SUPPLY : 24V DC ± 20%
  • EXTERNAL SUPPLY : 24V DC ± 20%
  • LINE SUPPLY : 30V DC ( MIN) (Depend on length of block section.)
  • LINE CURRENT : 100 mA (MAX).
  • EXTERNAL CURRENT : 250 mA (MAX).
  • INTERNAL CURRENT : 700 mA (MAX).
  • INTERNAL CURRENT (mA) :

Transmission of TCF Code: 230

Reception of TCF Code:110

Transmission of TGT Code: 300

Reception of TGT Code: 110

Block handle turning from N to R :500

Block handle turning from N to L :600

TCF (Idle) :90

TGT (Idle) 100:

Transmission of TOL Code: 180

Reception of TOL Code: 400

Train Reception: 150

Block handle turning from L to N: 450

Block handle turning from R to N: 550

Cancellation: 400

Bell Code: 125

SNR Condition

  • OPERATING TEMPERATURE RANGE : 0°C — 55°C
  • OVERALL DIMENTION : 970mm X 750mm X 500 mm
  • WEIGHT (APPROX) : 140 kgm
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Quality Control

We are an ISO 9001:2015 certified company. Our products are based on Railway/RDSO/IRS specification and are quality assured after extensive internal as well as third party inspection. We have appointed a team of quality analysts to keep a strict vigil on the quality of the products being manufactured right from raw materials to the finished production stage.

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