Technical Specifications & Components

Main Characteristics

• Semi-duplex voice communication
• Access to rock channel by current injection
• Carrier frequency: 70 kHz
• Single Side Band modulation (SSB-USB)
• Software implementation (DSP) of audio modulation and processing

Electrical Parameters

• Power supply: 12-15Vdc
• Battery charging process from power grid with extended range adapter (110-220V; 50-60Hz)
• Battery duration:
• In constant receive state: 10 hours
• In constant emit state: 3 hours

Mechanical Parameters

• IP isolation class:
• In transport (case closed): IP 67
• In operation (case open): IP 53
• Approximate dimensions of watertight case: 21x17x9cm
• Cabling: 2x25m
• Stainless steel L-rods: 25x3x0.3cm
• 1-metre contact mesh made of woven stainless steel
• Weight of equipment carried:
• Approx. 2.5 kg. (including cabling and rods)
• Approx. 1.3 kg (without cabling and rods)

Operating Conditions

• Temperature: -10ºC to +50ºC
• Relative humidity: 98%HR a 45ºC

Standards

• EN 301 489-1 V1.6.1 (2005)
• EN 60950-1 (2001)
• EN 60215 (1989) + A1 (1992) + A2 (1994)
• EN 300 330-2 V1.3.1
• Directive 2002/95/CE (RoHS)

Components

• Main communications unit
• PTT (“Push To Talk”) handset
• Lead battery used as primary power supply
• 10AA battery pack as alternative power supply
• Pelicase 1120 watertight carrying case
• Stainless steel electrodes (contact mesh and rods)
• Connection wiring
• Extended range charger for lead battery

At least two Tedra™ devices are necessary for communication.

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