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The JTM-30C-SV is a new generation, all-in-one, Single Transmitter 100W P.E.P. NDB (Non-Directional-Beacon) Radio Transmitter designed for on-board use by oil rigs, deep-sea vessels and offshore vessels as Helicopter Beacon. Easy and cost effective to install, complying with worldwide NDB specifications and using reliable digital technology. The transmitter consists of one self contained unit, with all system parts except the Power Supply mounted inside an IP66 weatherproofed and ruggedized cabinet. The standard supplied 110/220VAC Power Supply provides an interface for 24VDC battery backup and will during an AC Mains failure automatically switch the transmitter to battery power. Single Version with single PA/Exciter. The JTM-30C is widely used in oilfields in Europe and other parts of the world.
- Version of NDB equipment (all-in-one): Single Version
- Antenna Tuning inside Transmitter Cabinet: Manual (Auto-tune Option)
- Modules inside Transmitter Cabinet: PCU Board, Exciter, HPA and ATU
- External units: Power Supply and Remote Control(s)
- Comply to: ICAO and other applicable requirements
- Transmitter operates from: 24V DC +30% / -10%
- Protection against: Wrong polarity, over-voltage and overheating
- AC Power Supply operation from: AC mains 115/230 VAC +/-10% and 24V
- Ambient operating temperature: -35oC to + 55oC
- Humidity Transmitter & Power Supply: up to 95% at + 40 oC
- IP Protection (transmitter): IP66
- Frequency range (by synthesizer): 190 to 2000 kHz in steps of 1 Hz
- Frequency stability: 2,5 p.p.m.
- RF Power Output (adjustable): Up to 100 W PEP (into 10 ohm 250 pF)
- Harmonic and spurious attenuation: More than 60 dB below carrier
- Noise and hum attenuation: More than 40 dB below carrier
- Power consumption (full power): approx. 200W
- Antenna impedance (resistance): R = 2 to 25 ohms
- Antenna capacity: C = 150 to 500 pF
- Types of emission: AlA, A2A, N0N/A2A, A3E
- Modulation tone: 400/1020 Hz. Any frequency 300-1350 Hz
- Audio input for AM voice broadcasting: 0 dBm 600 ohms with push-to-talk capability
- Modulation AM (adjustable): 0 to 95%, max 5% distortion
- Minimum Shift Keying (MSK): Option (RS-232 and serial input)
- Morse Identification code and speed: Any combination of code (512 bits), 3 -20 wpm
- Morse sequence arrangements: Continuous, One time, Once every, Until
- Timing / Interval for operation: 1 minute to 100 minutes
- Monitoring and alarms: RF output & keying seq., DC failure, TXA / TXB
- Remote Control Unit (via wires): ON/OFF/Remote and LEDS for monitoring
- Remote Control & Monitoring (from PC) : Total control & monitoring via RS-485 Interface, at any distance (up to 2-300m)
- Transmitter Dimensions: Height: 600 mm + insulator, Width: 400 mm + heat sink 40mm, Depth: 320 mm
- Transmitter Weight: 33,8 kg (Dual), 31,6 kg (Single)
- Transmitter Cable Glands: PG16
- Power Supply Dimensions & Weight: Height: 315 mm, Width: 195 mm, Depth: 95 mm, Weight: 5,6 kg
- Power Supply Cable Glands: PG21
- Remote Control Dimensions: Height: 88 mm, (for installation in 19” Panels):Width: 250 mm, Depth: 40 mm
- Remote Control Weight: 0,3 kg
- Built-in heater element
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Features & Benefits
- 100W Peak Envelope Power (PEP), adjustable, for extensive and reliable range
- The carrier frequency may be tuned in steps of 1 Hz from 190 kHz to 2MHz to match the rigs/vessels allocated frequency
- Frequency generation by Direct Digital Synthesizer featuring high linearity and stability of carrier and modulation, low noise and excellent frequency accuracy
- Automatic monitoring of carrier, modulation and status/failure conditions
- Flexible control from an attached PC via RS485 or from any remotely connected PC via a dedicated WEB Home Page.
- Remote monitoring and/or programming of: Carrier frequency - RF power - Modulation type - Morse - Audio or GPS (option) - Modulation depth - Morse tone frequency - Keying rate - Morse messages (4, plain text) - Morse sequence (4)
- Timer function enabling four different Morse sequence types: Continuous, Transmit Once, Transmit Repeated, Transmit Intermittent
- Built-in non-volatile memory for storage of entire transmitter configuration, enables stand-alone unattended operation
- The transmitter operates with N0N/A2A or N0N/A3A emission. MSK modulation is available as an option
- Optional Remote Control Unit can be attached via separate galvanic isolated port to provide simple operation of the transmitter from a remote location or the Remote Control Panel may be connected in chain to more than one location
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