Radio MFHFDSC

Marine hx-3000 medium and high frequency (MFHF) radio set MFHFDSC

The product description

The main purpose

This device is mainly used for high frequency communication of ships in A2 ~ A4 sea area

Main functions:

1) SSB voice communication

2) GMDSS function

1. A) “one-click” maritime rescue and distress alarm
2. B) six-way standard GMDSS distress channel duty
3. C) alarm message forwarding

Marine hx-3000 medium and high frequency (MFHF) radio set MFHFDSC

The product description

The main purpose

This device is mainly used for high frequency communication of ships in A2 ~ A4 sea area

Main functions:

1) SSB voice communication

2) the GMDSS function

1. A) one-click maritime rescue and distress alarm
2. B) six-way standard GMDSS distress channel duty
3. C) alarm message forwarding

Technical indicators

Electrical performance index of transmitting part

Frequency range: 1.6mhz ~ 30MHz(emission);0.5mhz ~ 30MHz(receiver)

Frequency error: no more than 10Hz.

Rated output power (PEP) : 150W/100W/50W;

Intermodulation distortion: better than -25dbc.

SSB automatic level control (AGC)

When the input impedance is 600 ohms, the line input: -20 ~ 10dBm;Local input: 20mV, output change does not exceed 1.5db.

SSB telephone frequency response: 300 ~ 3000Hz, better than 3dBc

Carrier suppression: J3E: > 40dB;H3E: 4.5 ~ 6dB.

Continuous operation of ship

The radio transmitter works continuously for 15 minutes under the rated power, and the change of output power relative to the rated power does not exceed 1.5db.

Receiving part of the electrical performance indicators

Frequency audio output amplitude

Headset: 1mW;

Speaker: 2W;

600 ohm linear output: 0 10dB.

Frequency error: at the end of preheating time, the frequency error does not exceed 10Hz.

Audio response: 300 ~ 3000Hz, audio variation less than 3dB.

The sensitivity

J3E: -102dbm (1.8uv), SINAD=20dB;

F1B: -112dbm (0.58uV), when BER 10-2.

Total distortion factor: 3%.

blocking

1. J3E:

1) when the useful signal is +60dBuV, the blocking signal > +100dBuV;

2) the useful signal is the sensitivity level, and the blocking signal ratio is at least greater than 65dB.

2. F1B:

1) when the useful signal is +60dBuV, the blocking signal > +100dBuV, and the bit error rate is not less than 10-2;

2) when the useful signal is sensitivity level +3dB, the blocking signal > +60dBuV, and the bit error rate is not less than 10-2.

Spurious frequency rejection ratio

J3E: > 60dB;

F1B: > 70dB, BER > 10-2.

Relative audio intermodulation: < -25db.

Conducting stray emission

9khz-2ghz: < 2 nW;

2GHz-4GHz: < 20nW.

AGC features

When the input changes by 100dB, the output changes by less than 2dB.

Input circuit protection: input 30V RMS level at the receiving end of the radio antenna for 15 minutes without damage.

Environmental adaptability requirement

Dry, dry heat temperature: + 55 ℃ or less;

Damp and hot, humid temperature: + 40 ℃ or less and 93% relative humidity, a cycle;

Temperature, low temperature, low temperature 15 ℃ or higher;

vibration

13. A) sinusoidal scanning frequency 2Hz to 13.2hz, displacement 1mm, vibration 2h;
14. B) sinusoidal scanning frequency: 13.2hz to 100Hz, acceleration: 7m/s2, vibration: 2h;
15. C) sinusoidal scanning frequency is 30Hz, and it vibrates on three coordinate axes for 2h;

corrosion

After 2 h salt spray environment temperature + 40 ℃ under the condition of relative humidity of 90% 95%, hold

The next 7 days is a cycle, a total of four cycles.

Noise and auditory signals

In any place 1m away from the device under test, the sound pressure detection of working noise of the device shall not exceed 60dB(A).

When the sound alarm is turned on, in any space at the front of 1m from the device under test, the sound pressure of the alarm signal is between 75dB(A) and 85dB(A).

Compass safe distance

The safe compass distance of this device is 2m.

Power supply: rated voltage 13.8v, maximum current 30A;

Weight: less than 8kg.