Maintenance

5-3

5.2Preventative Maintenance

The RAY215 has been constructed to be virtually maintenance free. Your attention to a few basic points should assure many years of service.

1.Although the unit is waterproof, always keep the unit as dry as possible.

2.Clean the exterior of the unit with a tissue or soft non-abrasive cloth.

CAUTION

Do not use solvents or other chemicals for cleaning this equipment.

3.Inspect the radio case and antenna for any physical damage.

5.3Specifications

5.3.1Transmitter

Channels

All available US, International and Canada VHF

 

Marine band

Frequency Stability

+/- 10PPM (+/- 0.001%)

 

(-20 °C to +50 °C)

Frequency Range

156.025 to 157.425MHz

Channel Spacing

25 kHz Increments

Power Output

25 Watts switchable to 1 Watt into 50 Ohms at

 

13.6VDC

Modulation

Frequency modulated 16F3

ModulationAudioResponse

Shall not vary +1/-3 dB from true 6 dB pre-

 

emphasis from 300 to 2500Hz, reference 1000Hz.

 

Audio frequencies 3-20 kHz shall be attenuated

 

(at 1 kHz by 60 log f/3 dB. Above 20kHz by 50dB)

FMHum&Noiselevel

Less than -40dB below audio

Audio Distortion

Less than 10% at 1kHz for 3kHz deviation

Spurious & Harmonic

Attenuated at least 43+10log Po (below rated

 

radiated carrier Emissions power) per FCC Rules

 

Part 2 & 80

Antenna Impedance

50 Ohm

Transmitter Protection

Open and short antenna protection circuit for 10

 

minute transmission

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Raymarine Ray215 manual Preventative Maintenance, Specifications, Transmitter