Description TTR-51

The TTR-51 radio portable is an IS hand held radio for use in mining hazardous environments as well as places likely to be endangered by mixtures
of explosive gasses and coal dust.
The TTR-51 enables:
-  individual calls “point to point"
- group calls with the automatic DTMF channel selection mode for communication with 8 external PABX numbers.

Technical Specifications Atex Portable Radio TTR-51

Technical Parameters
Frequency coverage -                                            136.000-174.000 MHz
Type of emission -                                                 (Wide/ Middle/Narrow): (25.0/20.0/12.5 kHz)
Number of conventional channels                      128 ch (divided into 8 banks)
Operating temperature range                               -25 C to +55 C
Power supply requirement                                    6 VDC, 2500 mAh Ni-MH battery
Current drain (at 7.2 V OC)                                    RECEIVING:    Stand-by 85 mA
                                                                                    Max. audio 300 mA
                                                                                    TRANSMITTING: 700 mA
Dimensions                                                              56.0(W)x98.0(H)x43.0(D) mm
Weight                                                                        (including TTB-1) approx. 400g

Transmitter
Output power                                                             max. 1W
Modulation                                                                 Variable reactance frequency modulation
Maximum permissible deviation                           ±5.0 kHz (Wide), ±4.0 kHz (Middle), ±2.5 kHz (Narrow)
Frequency error                                                         ±2.5 ppm
Spurious emissions                                                0.25 μW (<=1 GHz), 1.0 μW (>=1 GHz)
Adjacent channel power                                          70 dB min. (Wide, Middle), 60 dB min. (Narrow)
Audio harmonic distortion                                       3 % typical (AF 1 kHz, 40 % deviation)
Residual modulation (with CCITT filter)               45 dB min (55 dB typical) for Wide
                                                                                      43 dB min (53 dB typical) for Middle
                                                                                      40 dB min (50 dB typical) for Narrow
Microphone Impedance                                           2.2 Ohm

Receiver
Receive system                                                         Double conversion superheterodyne system
Intermediate frequencies                                        1st IF: 46.35 MHz, 2nd IF: 450 kHz
Adjacent channel selectivity                                    70 dB min (75 dB typical) forWide and Middle
                                                                                      60 dB min (65 dB typical) for Narrow
Spurious response                                                  70 dB
Intermodulation rejection ratio                                65 dB min (67 dB typical)
Residual modulation (with CCITT filter)               45 dB min (55 dB typical) for Wide
                                                                                      43 dB min (53 dB typical) for Middle
                                                                                      40 dB min (50 dB typical) for Narrow
Audio output power                                                   0.5Wtypical at 5% distortion with an 8 load
Output impedance (Audio)                                      8 Ohm
 

TTBB-1 Battery Pack
Max. output voltage at terminal G2                          U = 7,5V DC
Max. Output current at terminal G2                          I  = 1.7A
Typical operation time with TTR-51                        14h
Typical charging time with 0.7 A current 4             4h
Dimensions                                                                91x56x21 mm (Height/Width/ Depth)
Weight approx.                                                            0.23 kg
Operating temperature range                                 -20 C to +40 C
Operating humidity range at 20 C                         <95%

Accesoires
HM-138 Speaker Microphone with aligator type clip, Leather case, Automatic charger

Approvals
The TTR-51 radio portable altogether with the TTB-1 battery pack comply with the essential requirements of the ATEX Directive and has been marked as ATEX IM1 Ex ia Protection Degree IP 54.

For orders under € 450 we charge € 25 order costs.
Prices shown on this website are before taxes, currency changes and shipping costs.
For an accurate price please contact our sales team at info@comm-co.com