Technical Characteristics; Trouble Shooting; How To Transmit Or Receive A Message - PRESIDENT HARRY III Manual Del Usuario

C) TECHNICAL CHARACTERISTICS
1) GENERAL
- Channels : 40
- Modulation modes : AM/FM
- Frequency ranges : from 26.965 MHz to 27.405 MHz
- Antenna impedance : 50 ohms
- Power supply : 13.2 V
- Dimensions (in mm) : 125 (L) x 150 (H) x 45 (D)
: ~ 0.7 kg
- Weight
- Accessories supplied : Electret microphone with support,
mounting cradle, screws.
- Filter : ANL (Automatic Noise Limiter) built-in
2) TRANSMISSION
- Frequency allowance : +/- 200 Hz
- Carrier power : 1 W AM / 4 W FM
- Transmission interference : inferior to 4 nW (- 54 dBm)
- Audio response : 300 Hz to 3 KHz
- Emitted power in the adj. channel : inferior to 20 µW
- Microphone sensitivity : 7 mV
- Drain : 1,7 A (with modulation)
- Modulated signal distortion : 1,8 %
3) RECEPTION
- Maxi. sensitivity at 20 dB sinad : 0.5 µV - 113 dBm
- Frequency response : 300 Hz to 3 kHz
- Adjacent channel selectivity : 60 dB
- Maximum audio power : 2 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 : 300 mA nominal / 750 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 confi guration is the correct one (see table page 56).
2) YOUR CB RADIO WILL NOT RECEIVE OR RECEPTION IS POOR
- Check that RF GAIN ( 4 ) is on maximum.
- Check that the squelch level is properly adjusted.
- Check that the programmed confi guration is the correct one (see table page 56).
- Check that the volume is set to a comfortable listening level.
- Check that the microphone is properly plugged in.
- 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).
Choose your mode (AM/FM) which must be the same as that of your correspondent.
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