CY-VH03 explosion-proof VHF is intrinsic safety type, the explosion-proof marks: Ex ib Ⅱb T4 Gb, meet the MSC. 338 (91) - IMO Resolution MSC.338(91):Adoption of Amendments to the International Convention for the Safety of Life at Sea, 1974, as amended, suitable for firefighters on the ship.
When the VHF use for firefighters, the VHF may be equipped with CY-HS1518 (Throat Microphone headset) or CY-HS1519 (Bone conduction headset).
This explosion-proof VHF can used for chemical tanker and also use for explosive atmospheres, meet the demand of daily communication.
The following is 4 type of explosion-proof headset:
Ambient temperature: -20℃～+40℃
Atmospheric pressure: 80kPa～110kPa
Standard oxygen content in the air : 21%( volume ratio)
Relative humidity: 5%～95％（ when 25℃）
Exist or maybe exist explosion - hazardous areas consisted of inflammable gas, Steam and air mixture of IIA-IIB class, T1-T4 group.
Very High Frequency (VHF) is the GMDSS system important component and it is radio equipment that mainly used in communication between people with risks and nearby rescue groups. It can use all VHF channels that are assignment for the international marine mobile service. When the emergency encounters to be possible transmits the distress signal to other ships or the sea patrol leader in 16 channels.
Frequency range: 154-163MHz
Channel spacing: 25kHz (12.5kHz optional)
Operating temperature: -20℃ to +55℃
Sensitivity: 2μV for 20 dB SINAD
Adjacent channel power: ＞70 dB
Blocking: ＞90 dB
Spurious response: ＞70 dB
Harmonic distortion: ＜5%
Intermodulation rejection: ＞68 dB
RF output power: 1W (Lo)/5W (Hi)
Frequency error: ＜+1.5kHz
Case Size (W x H x D): 2.20” x 5.24” x 1.08” (56 x 133 x 27.5 mm)
(w/o knob & antenna)
Weight (Approx.): 280 g
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