Item # 5237
Mini Controller fires up to 4 Remotes
Rechargeable batteries are user replaceable
Light display toggles between bright & dim
Up to 12 Miles L.O.S. 2-way communication
Increased firing capacity
5 position charger and conditioner
The Rothenbuhler 1678 Remote Firing Device (RFD) is an intelligent and discrete 2-way controlled initiation system used on land as a primary firing mechanism to detonate explosive charges. The Remotes respond only to commands transmitted from a similar digitally encoded (addressed) Mini Controller. The RFDs unique and field proven design will only allow a system with the correct address to interrogate and actuate the Remotes.
The latest microprocessor and message encoding/validation technology (CRC-32) has been combined to provide a SAFE, RELIABLE, ACCURATE and COMPACT tool.
The RFD is safer to use than conventional electric initiation methods. The Remotes have a timed automatic disarming feature for added safety. All Mini Controller and Remote buttons, LEDs and hardware are recessed, to minimize the possibility of damage. All system cases are ATERTIGHT to a depth of 100 ft. All RFD cases have a vent for pressure equalization and airtight to an altitude of 30,000 ft.
The RFD has a versatility and reliability not before seen in demolition initiation systems. Due to the unique design of the Rothenbuhler RFD, the system can individually command from 1-4 Remotes with each Mini Controller unit. The Remotes can be individually selected on, armed, fired, and interrogated for status via the keypad on the Mini Controller. If a Remote has a low battery, this will also be indicated on the Mini Controllers keypad if the Remote is within range. With the 1678 system and the SLEEP MODE feature, the Remotes can be left in standby mode for approximately 200 hours and still maintain the energy to initiate blasting caps.
CARRIER FREQUENCY: 150-174 MHz OPERATING TEMPERATURE RANGE: -30C to 60C / -22F to 140F
FCC Certified -26C to 60C / -15F to 140F (RSTI)
MINI CONTROLLER REMOTES: ELECTRIC & RSTI
FREQUENCY STABILITY 2.5PPM or (0.0000025%) 2.5PPM or (0.0000025%)
MODULATION 11K2F3D (AFSK) 11K2F3D (AFSK)
TRANSMIT POWER 2-5 Watts (Mini Controller) 2 Watts (Electric Remote)
1 Watt (Test Box) 2-5 Watts (RSTI)
OPERATING POWER 7.2 VDC 7.2 VDC
TRANSMISSION RANGE (LOS) 5-12 Miles* 1-12 Miles*
3 Feet (Test Box)
(*) Range is specified as line-of-sight. The typical transmission range is based on transmitter power, antenna gain, frequency used, local geography, and local radio interference.
SIZE (w/out antenna) (in) 6.4H x 3.5W x 2.5D 6.4H x 3.5W x 2.4D
SIZE (w/out antenna) (cm) 16.3H x 8.9W x 6.4D 16.3H x 8.9W x 6.1D
WEIGHT (w/battery) (lb.) 2.7 lbs. 2.5 lbs.
WEIGHT (w/battery) (kg) 1.2 kg 1.1 kg
CASE 6061 Aluminum 6061 Aluminum
COLOR Black Black
CASE FINISH Hard Anodized Hard Anodized
BATTERY PACK Rechargeable NiMH Rechargeable NiMH
RUN TIME PER CHARGE 12+ Hours Adjustable between 12-300 Hours
Typical User Setting is 200 Hours*
BATTERY RECHARGE 1-4 Hours** 1-4 Hours**
BATTERY LIFE Approximately 2 years Approximately 2 years
or 300 charge cycles or 300 charge cycles
STANDBY CURRENT 110 milliamps 80 milliamps
TRANSMIT CURRENT 1-2.5 Amp 1-2.5 Amp
(*) At the end of the 200 hours, the Electric Remote Unit can initiate 14 (2-Ohm) blasting caps Connected in series and attached to 100 feet (30 meters) of 18AWG firing cable.
(**) Actual charge time depends on the model of the charger used, initial charge of the battery, And the condition of the battery. This estimate does not include discharge or
DETONATE OUTPUT ELECTRIC REMOTE RSTI REMOTE
FIRING ENERGY 2.8 Joule (typical), 1.8 Joule (minimum) 0.470 Joule (typical), 0.350 Joule (minimum)
PULSE VOLTAGE LEVEL 50 VDC (typical), 45 VDC (minimum) 2,500 VDC (typical), 2,250 VDC (minimum)
CAPACITOR 2,200F Electrolytic
MAX FIRING RESISTANCE 28
(This includes firing cables, detonators & detonator leg wires)
ARM TIME: 4 0.5 Seconds
ARM TIME PERIOD (BEFORE AUTO DISARM): 1-60 Minutes (20 Minute Default)*
DISARM TIME: 3 0.1 Seconds
ELECTRIC REMOTE FIRE TIME: 20 Milliseconds