Technical Characteristics; Trouble Shooting - PRESIDENT JOHNSON II Manual Del Usuario

TOT (Time Out Timer)
If the PTT key (11) is pressed for more than 5 minutes, CHANNEL and
starts blinking, the transmission ends.
A) DC-POWER TERMINAL (13.2 V / 24 V)
B) ANTENNA CONNECTOR (SO-239)
C) EXTERNAL SPEAKER JACK (8 Ω, Ø 3.5 mm)
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 / 24 V
- Dimensions (in mm) : 170 (W) x 150 (D) x 52 (H)
- Weight : 1 kg
- Accessories supplied : microphone UP/DOWN with support,
2) TRANSMISSION
- Frequency allowance : +/- 300 Hz
- Carrier power : 4 W AM / 4 W FM
- Transmission interference : inferior to 4 nW (- 54 dBm)
- Audio response : 300 Hz to 3 KHz in AM/FM
- Emitted power in the
adjacent channel : inferior to 20 µW
- Microphone sensitivity : 3.0 mV
- Drain : 2 A (with modulation)
- Modulated signal distortion : 1.8 %
3) RECEPTION
- Maxi. sensitivity at 20 dB
sinad : 0.5 µV - 113 dBm (AM/FM)
- Frequency response : 300 Hz to 3 kHz in AM/FM
- Adjacent channel selectivity : 60 dB
mounting cradle, screws and fused power
cord.
- Maximum audio power
- Squelch sensitivity
- Frequency image rejection
rate
- Intermediate frequency
rejection rate
- Drain
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.
48).
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.
48).
- 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 corre-
spondent.
3) YOUR CB WILL NOT LIGHT UP
- Check the power supply.
- Check the connection wiring.
- Check the fuse.
31
: 3 W
: minimum 0.2 µV - 120 dBm
maximum 1 mV - 47 dBm
: 60 dB
: 70 dB
: 400 mA nominal / 1000 mA maximum