ICOM M-602 VHF 25W MARINE
ICOM M-602 VHF 25W MARINE
Description
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Performance
The M602 upheld Icom tradition and performed superbly. In our transmitter review, we found the Icom M602 power output stable over the entire temperature and voltage ranges tested. Frequency stability was rated excellent as well. We rated receiver sensitivity good while selectivity is as good as any radio we've seen with a specification of greater than 80 dB. Audio output was excellent too with sound pressure levels higher than any other VHF radio we've tested.
Operation
One-button controls are limited to selecting transmitter power level, toggling between weather and voice channels, and making a quick 16 channel selection. Combining two pushbuttons lets the user select between US, International, or Canadian channels. Volume, squelch, and channel selection are controlled with knobs. Other radio features are controlled via a function key and the alphanumeric keypad. For example, hitting the F key followed by the 1 key turns on Dual scan, F then 2 is Tri-Watch, and F then 3 is screen backlighting. Once a function like backlighting is selected it can be adjusted up or down by turning the channel selector knob. The remaining keys control tag scan operation and channel selection, receiver local/distant setting, hailer, automatic fog signals, optional intercom, and optional voice scrambler. The M602 is capable of coupling to 2 remote microphones. Current time and position are normally displayed onscreen when GPS data is input to the radio.
Digital Selective Calling
The M602 has a long list of DSC calling abilities including distress, individual, all ships, group, position request, position send, geograpical, polling, and polling request. The M602 can store up to 100 individual or group MMSI numbers with a maximum of 10 character names. As many as 20 incoming distress and 20 other incoming messages can also be stored. A nature of distress tag, selected from a list of 11 items, can be added to a DSC call.
Specification
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Frequency coverage : Transmit 156.025–157.425 MHz : Receive 156.050–163.275 MHz Mode : FM (16K0G3E) : DSC (16K0G2B) Current drain (at 13.8 V) : TX high (25 W) 5.2 A typical : Max. audio 1.2 A typical Power supply requirement :13.8 V DC ±15% (negative ground) Frequency stability : ±5 ppm (–20°C to +60°C; –4°F to +140°F) Antenna impedance : 50 ohm nominal Input impedance (MIC) : 2 k ohm Output impedance (audio) : 4 Ω Intermediate frequencies : 1st; 31.05 MHz, 2nd; 450 kHz (CH 70 receiver) 1st; 21.7 MHz, 2nd; 450 kHz Dimensions : 220(W)×110(H)×109.4(D) mm (Projections not included) 821⁄32(W)×411⁄32(H)×45⁄16(D) in Weight : 1350 g; 2 lb 16 oz In The Box
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- Microphone (HM-136)
- Dcpower cable (OPC-1174)
- Microphone hanger
- Mic hanger screws (3 × 16)
- Mounting bracket
- Knob bolts for mounting bracket
- Mounting screws (5 × 20)
- Spring washers (M5)
- Flat washers (M5)
- Accessory connectors (3 pin, 6 pin)
- Sponges
- Warning sticker