Technical Characteristics; Trouble Shooting - PRESIDENT JOHNSON II USA 12/24 V Owner's Manual

TALKBACK FUNCTION
Press first PTT switch (12) and then •F/MEM key (6) to acti-
vate/deactivate TALKBACK function. When the function is
on, "TALKBACK" is displayed.
TOT (Time Out Timer)
If the transmission (using the PTT (12) key or VOX) is more
than 5 minutes, CHANNEL and
mission ends.
The time-out tone will sound until the PTT key is released.
A) DC-POWER TERMINAL (13,8 V / 27,6 V)
B) ANTENNA CONNECTOR (SO-239)
C) EXTERNAL SPEAKER JACK (8 Ω, Ø 3,5 mm)
D) PA SPEAKER JACK (8 Ω, Ø 3,5 mm)
E) JACK FOR OPTIONAL VOX MIKE (Ø 2.5 mm)
C) TECHNICAL CHARACTERISTICS
1) GENERAL
- Channels
- Modulation modes
- Frequency ranges
- Weather channels
- Antenna impedance
- Power supply
- Dimensions (W x D x H)
- Weight
- Accessories supplied
(PTT + •F/MEM )
starts blinking, the trans-
: 40
: AM
: from 26.965 MHz to 27.405 MHz
: from 162.400 MHz to 162.550 MHz
: 50 ohms
: 13.8 V / 27.6 V
: 6.69 x 5.91 x 2.05 inches
170 x 150 x 52 mm
: 2.20 lbs / 1 kg
: Ultra light electret microphone with
support, mounting cradle, screws
2) TRANSMISSION
- Frequency allowance
- Carrier power
- Transmission interference
- Audio response
- Emitted power in the adj.
channel
- Microphone sensitivity
- Drain
- Modulated signal distortion
3) RECEPTION
- Maxi. sensitivity at
10 dB (S+N)/N
- Frequency response
- Adjacent channel selectivity : > 60 dB
- 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.
13
: +/- 200 Hz
: 4 W (constant)
: inferior to -60 dBc
: 300 Hz to 3 KHz
: inferior to 20 µW
: 3 mV
: 2 A (with modulation)
: 1.8 %
: 0.6 µV - 111 dBm
: 300 Hz to 3 kHz
: 2 W
: minimum 0.2 µV - 120 dBm
maximum 1 mV - 47 dBm
: 60 dB
: 70 dB
: 300 mA nominal / 1000 mA maximum