The Jotron TR-810 VHF AM Multi Purpose Radio Last Resort Version 83200LR is based on the Jotron TR-810 VHF AM Multi Purpose Radio that has been designed to be largely future-proof against possible requirements for the versatility of a ship-borne radio.

Basic qualities of the TR-810 VHF AM Multi Purpose Radio are that it is robust in construction yet still lightweight.

It is available in eight configurations: Vehicle, Desktop, Man-Portable, Sub Rack*, Offshore* and this one, the TR-810 VHF AM Multi Purpose Radio Last Resort* Version.

The Last Resort Version is the TR-810 in desktop radio form but with a lithium-ion technology battery pack supplying the radio with a DC voltage when AC power fails. Battery status can be monitored on the battery unit itself or on the TR-810 display. The battery capacity is 72Wh so that the TR-810 can have an independent performance lifetime of 7.5 hours in 10% Tx/30% Rx/60% idling at 10W output power. Up to 9.5 hours of performance can be achieved if the output power is reduced to 2.5W.

The operator’s control panel (OCP) is detachable from the compact base unit and communication between the two elements of the device is through a standard CAT-5 cable, this separation being what enables the versatility of its applications.

Features

• DC voltage range: 10-28V
• Fast recall of 3 present channels via dedicated buttons
• Bright and clear graphical display for easy readout
• Built-in loudspeaker with possibilities for external loudspeaker
• Front or rear connection for microphone input
• Voice recorder output
• Available as man-portable unit
• External battery unit with battery indicator on front display
• Easy to install
• ETSI and FCC approvals
• 25kHz/8.33kHz channel separation, ETSI approved

Specification

• Frequency range: 118-137MHz
• Channel separation: 25kHz/8.33 kHz (selectable)
• Frequency stability: ±1.0ppm
• Frequency selection: 25/8.33kHz steps
• Pre-set channels: 63
• Type of modulation: AM (A3E)
• Audio response:
• 25kHz: +1/-3dB rel to 1kHz, 300-3400Hz
• 8.33kHz +1/-3dB rel to 1kHz, 300-2500Hz
• Audio output:
• Built-in speaker: >4W
• Headphone: 8-32O >100mW
• External speaker: >4W @ 4O, adjustable from front panel
• Mic input: Dynamic/electret sensitivity 1.9mV
• Monitor: Unbalanced 600O, -7dBm @ 70% modulation
• Antenna connector: 50O, BNC connector
• Operating temperature: -20°C to +55°C
• Storage temperature: -40°C to +70°C
• Operating voltage 12-28V DC ±10%
• Power consumption: 10W, 80% modulation: <60W

Receiver Specification

• Sensitivity: 10dB SINAD at 1µV pd, 30% modulation
• Squelch: Adjustable from -1µV pd to 25µV pd
• Opening/closing:<50ms
• THD: <5%, 90% mod, 100µV, 1kHz
• S/N ratio: >45dB, 100µV, 30%, 1kHz
• Adjacent channel rejection: >80dB, 25kHz/>65dB, 8.33kHz
• Cross modulation: >90dB @ 1MHz offset
• Blocking: >95dB @ 1MHz offset
• Spurious response rejection: >80dB
• Inter-modulation immunity: >80dB
• Image frequency rejection: >100dB
• If rejection: >100dB
• Permissible input level: 5V EMF
• AF AGC: <3dB change in output level for modulation 30–90%
• Conducted spurious emissions: <-70dBm
• Effective acceptance bandwidth: <6dB @ ± 8.5kHz, 25kHz, <6dB @ ± 4kHz, 8.33kHz channels

Transmitter Specification

• Modulation: AM up to 90%; modulation depth adjustable from front panel
• Standing wave ratio: 1:infinity
• Output power: 10W ± 1dB, adjustable (40WPEP)
• Output is reduced automatically when VSWR reaches approx 3:1
• Keying time: <20msec
• Release time: <10msec
• Keying: Mic connectors
• LF compression (VOGAD) 30dB with less than 10% change in modulation
• Limiter: Limiting amplifier prevents over-modulation
• Distortion: Less than 5% at 90% modulation
• Hum and noise level: Better than 40dB below at 90% modulation
• Duty cycle: 30% continuous operation at ambient temperature below 55°C
• Inter-modulation attenuation: >40dB with a frequency offset of ±150kHz

Battery Specification

• Operating temperature: -20°C to +55°C
• Storage temperature: -40°C to +70°C
• Operating voltage: 12-28V DC ±10%
• Battery type: Lithium-ion (SAFT)
• Battery capacity 72Wh: Approx 11hrs operation (10/90 duty cycle)
• Operating time @10W: Approx 7.5hrs (10/30/60 duty cycle)
• Operating time @ 5W: Approx 8.5hrs (10/30/60 duty cycle)
• Operating time @ 2.5W: Approx 9.5hrs (10/30/60 duty cycle)
• Power consumption: Charging <80W, charging + transmit <140W

Approved to Following Standards

• Radio performance:
• EN 300 676 V1.3.1
• EMC:
• EN 301 489-1 V 1.5.1: EMC for radio equipment
• EN 301 489-22 V 1.3.1: Specific conditions VHF aeronautical equipment
• IEC 60945: Maritime navigation and radio communication equipment
• FCC:
• Part 87 and RSS 141
• Safety:
• According to EN/IEC 60950
• Vibration and shock:
• EN 300-019-2-2: Transportation
• EN 300-019-2-5: For ground vehicle installations
• EN 300-019-2-7: For portable and non-stationary use