PRESIDENT JFK II A+, Руководство пользователя

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c)
It is necessary to connect your radio to a permanent (
+
) and (
-
).
We advise you to connect the power cable directly to the battery
(as the connection of the radio cable to the wiring of the car-radio
or other parts of the electrical circuit may, in some cases, increase
the likelihood of interference).
d)
Connect the red wire (
+
) to the positive terminal of the battery and
the black (
-
) wire to the negative terminal of the battery.
e) Connect the power cable to your radio.
WARNING:
Never replace the original fuse (5 A) by one of a different
value.
4) BASIC OPERATIONS TO BE CARRIED OUT BEFORE USING
YOUR SET FOR THE FIRST TIME (without transmitting and
without using the «push-to-talk» switch on the microphone)
a) Connect the microphone
b) Check the antenna connections
c) Turn the set on by turning the VOL knob ( 1 ) clockwise.
d) Turn the squelch SQ knob ( 2 ) to minimum ( M position).
e)
Adjust the volume to a comfortable level.
f)
Go to 28.555 MHz frequency by using the channel selectors (
5
).
5) ADJUSTMENT OF SWR (Standing wave ratio)
WARNING: This must be carried out when you use your radio for the
first time (and whenever you re-position your antenna). The adjust-
ment must be carried out in an obstacle-free area.
* Adjustment with external SWR-meter (e.g. TOS-1 PRESIDENT)
a) To connect the SWR meter
- Connect the SWR meter between the radio and the antenna as
close as possible to the radio (use a maximum of 40 cm cable, type
President CA 2C).
b)
To adjust the SWR meter
- Set the radio to 28.555 MHz frequency.
- Put the switch on the SWR-meter to position FWD (calibration).
- Press the «push-to-talk» switch on the microphone to transmit.
- Bring the index needle to

by using the calibration key.
- Change the switch to position
REF
(reading of the SWR level). The
reading on the 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 adjust-
ment of the antenna.
WARNING: In order to avoid any losses and attenuations in cables
used for connection between the radio and its accessories, PRESI-
DENT recommends to use a cable with a length inferior to 3m.
Your radio is now ready for use.
B) HOW TO USE YOUR RADIO
1) ON/OFF – VOLUME
a)
To turn the set on, turn the
VOL
knob (
1
) clockwise.
b)
To increase the sound level, turn the same knob further clockwise.
2) ASC (Automatic Squelch Control) / SQUELCH
Suppresses undesirable background noises when there is no com-
munication. Squelch does not affect 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 SQ knob ( 2 ) anti-clockwise into ASC position. «ASC» appears
on the display. No repetitive manual adjustment and a permanent
improvement between the sensitivity and the listening comfort
when
ASC
is active. This function can be disconnected by turning
the switch clockwise. In this case the squelch adjustment becomes
manual again. «ASC» disappears from the display.
b) MANUAL SQUELCH
Turn the
SQ
knob (
2
) clockwise to the exact point where all back-
ground noise disappears. This adjustment should be done with
precision as, if set to maximum (fully clockwise), only the strongest
signals will be received.
3) RF GAIN
Adjustment of the sensitivity during reception. For long distance com-
munications should be set to maximum. You can reduce
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