Appendix a - technical specifications – Navman MCB 7270 User Manual
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NAVMAN
MCB 7270 Marine CB 27 MHz Radio Operation Manual
GENERAL
Compliance:
AS4355 and AS4367
Frequency range:
26.965 - 27.980 MHz
Frequency stability:
.001%
Phase locked loop
Dual Watch, Favourite 3 Channel Scan, All Scan
CH88/9 Recall
LCD display (viewing area):
30 x 25 mm (black on silver)
LCD and microphone keys backlit
Backlighting control:
4 levels (OFF, LOW, MED, HIGH)
Dimensions (without trunnion):
162 x 75 x 157mm
Weight (with microphone):
1.2kg
Waterproof level:
JIS-7
Built-in MCU Processor
Built-in Speech Processor circuitry
Last Channel memory
SO-239 Annenna connector:
50Ω
Input voltage:
10.8 to 16.3V DC
Operating temperature range:
0ºC to 55ºC
Extension speaker cable with covered jack
Fused DC power cable with quick disconnect terminals
Reverse polarity protection
TRANSMITTER
RF output power at 12.6V DC:
4W maximum legal power
Modulator mode:
AM (A3E)
Modulation sensitivity:
60% modulation @ 1 Pascal (microphone)
Hum & Noise:
Better than 10% @ 60% modulation
Current drain:
2.0 amps @ full modulation
Spurious & Harmonic Suppression:
Better than -65dB
RECEIVER
Dual Conversion Superhetrodyne
Sensitivity:
0.5uV for 12dB SINAD
IF frequencies:
First: 10.7MHz; Second: 450KHz
Selectivity:
-36dB @ ±6KHz, -60dB@±10KHz
Image rejection:
70dB
Intermodulation rejection:
60db (20KHz channel specification)
SQ range:
Tight = 10uV; Threshold = 0.3uV
Audio output:
1W @ 16Ω, external 4W @ 4Ω
Current drain:
800mA full volume, 350mA squelched
Spurious emissions:
-57dBm
Hum & Noise:
better than -50dB/1mV input
Specifications are subject to change without notice.
Appendix A - Technical Specifications