PRESIDENT JOHNSON II VOX 12/24 V, Owner'S Manual

Page: 29 / 56

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5) ADJUSTMENT OF SWR (Standing wave ratio)
WARNING: This must be carried out when you use your CB radio for the
first time (and whenever you re-position your antenna). The adjustment
must be carried out in an obstacle-free area.
* Using an external SWR meter (e.g. SWR 1)
a) To connect the SWR meter :
- Connect the SWR meter between the CB radio and the antenna as
close as possible to the CB (use a maximum of 40 cm cable, type
President CA 2C).
b) To adjust the SWR meter:
- Set the CB to channel 20.
- Put the switch on the SWR meter to position FWD .
- Press the «push-to-talk» switch on the microphone to transmit.
- Bring the index needle to
t
by using the calibration key.
- Change the switch to position
REF
(reading of the SWR level). The
reading on the V.U. meter should be as near as possible to 1. If this is
not the case, re-adjust your antenna to obtain a reading as close as
possible to 1. (An SWR reading between 1 and 1.8 is acceptable).
- It will be necessary to re-calibrate the SWR meter after each adjustment
of the antenna.
WARNING:
In order to avoid any losses and attenuations in cables
used for connection between the radio and its accessories, PRESIDENT
recommends to use a cable with a length inferior to 3m.
Your CB is now ready for use.
B) HOW TO USE YOUR CB
1) ON/OFF - VOLUME
a)
To turn the set on, turn the knob
VOL
(
1
) clockwise.
b) To increase the sound level, turn the same knob further clockwise.
2) ASC (Automatic Squelch Control)/SQUELCH
Suppresses undesirable back-ground noises when there is no com-
munication. Squelch does not effect neither sound nor transmission
power, but allows a considerable improvement in listening comfort.
a) ASC: Automatic Squelch Control
Worldwide patent, a PRESIDENT exclusivity
Turn the squelch knob
SQ
(
2
) counterclockwise to
ASC
position.
«ASC»
appears on the display. No repetitive manual adjustment and a per-
manent improvement in listening comfort when this function is active.
It can be disconnected by turning the knob clockwise, in this case the
manual squelch control becomes active again.
«ASC»
disappears.
b) Manual squelch
Turn the squelch knob clockwise to the exact point where all back-
ground noise disappears. This adjustment should be done with precision
as, if set to maximum, (i.e. fully clockwise) only the strongest signals will
be received.
3) DISPLAY
Multi-functions LCD display (backlight). It allows visualizing all functions:
Shows transmission
SCAN Scan function activated
AM AM mode selected
FM FM mode selected
HI-CUT HI-CUT filter activated
ASC Automatic Squelch Control activated
DW Dual Watch activated
NB NB filter activated
ANL ANL filter activated (only in AM mode)
LOCAL Automatic adjustment of RF GAIN activated
UK Shows the England configuration (see table on page 48)
EMG Priority channel (emergency) 19 or 9 activated
English