PRESIDENT Grant II, Руководство пользователя

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35
C) TECHNICAL CHARACTERISTICS
1) GENERAL
- Channels : 40
- Modulation modes : AM / FM / USB / LSB
- Frequency ranges : from 26.965 MHz to 27.405 MHz
- Antenna impedance : 50 ohms
- Power supply : 13.2 V
- Dimensions (in mm) : 185 (W) x 205 (D) x 56 (H)
- Weight : 1,1 kg
- Accessories supplied : microphone UP/DOWN with support,
mounting cradle, screws and fused
power cord.
2) TRANSMISSION
- Frequency allowance : +/- 300 Hz
- Carrier power : 4 W AM / 4 W FM / 12 W USB / 12 W LSB
- Transmission interference : inferior to 4 nW (- 54 dBm)
- Audio response : 300 Hz to 3 KHz in AM/FM/USB/LSB
- Emitted power in the adj. channel : inferior to 20 μW
- Microphone sensitivity : 3.0 mV
- Drain : 3 A (with modulation)
- Modulated signal distortion : 1.8 %
3) RECEPTION
- Maxi. sensitivity at 20 dB sinad : 0.5 μV - 113 dBm (AM/FM)
0.28 μV - 118 dBm (USB/LSB)
- Frequency response : 300 Hz to 3 kHz in AM/FM
- Adjacent channel selectivity : 60 dB
- Maximum audio power : 3 W
- Squelch sensitivity : minimum 0.2 μV - 120 dBm
maximum 1 mV - 47 dBm
- Frequency image rejection rate : 60 dB
- Intermediate frequency rej. rate : 70 dB
- Drain : 400 mA nominal / 1000 mA maximum
D) TROUBLE SHOOTING
1) YOUR CB RADIO WILL NOT TRANSMIT OR YOUR
TRANSMISSION IS OF POOR QUALITY
- Check that the antenna is correctly connected and that the SWR is properly
adjusted.
- Check that the microphone is properly plugged in.
- Check that the programmed configuration is the correct one (see p. 53).
2) YOUR CB RADIO WILL NOT RECEIVE OR RECEPTION IS POOR
- Check that the Local function is not activated
- Check that the squelch level is properly adjusted.
- Check that the programmed configuration is the correct one (see p. 53).
- Check that the volume is set to a comfortable listening level.
- Check that the antenna is correctly connected and that the SWR is properly
adjusted.
- Check that you are using the same modulation mode as your correspondent.
3) YOUR CB WILL NOT LIGHT UP
- Check the power supply.
- Check the connection wiring.
- Check the fuse.
E) HOW TO TRANSMIT OR RECEIVE A MESSAGE
Now that you have read the manual, make sure that your CB Radio is ready
for use (i.e. check that your antenna is connected).
Choose your channel (19, 27) or other (USB/LSB).
Choose your mode (AM/FM) which must be the same as that of your cor-
respondent.
Press the «push-to-talk» switch and announce your message «Attention sta-
tions, transmission testing» which will allow you to check the clearness and
the power of your signal. Release the switch and wait for a reply. You should
receive a reply like, «Strong and clear».
If you use a calling channel (19, 27) and you have established communication
with someone, it is common practice to choose another available channel
so as not to block the calling channel.
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