PRESIDENT THOMAS FCC, Руководство пользователя

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12
The
TALKBACK
function can be activated or deactivated as follows:
a)
Press and hold the
PTT
switch (
11
)
b)
Short press on
F
key (
5
). Current
TALKBACK
level blinks 3 times
allowing you to adjust this level.
When function is activated,
“TALKBACK”
appears on the display.
This function allows to ear your own modulation with the CB speaker.
2) TALKBACK LEVEL
( PTT + s / t on the unit)
- At step
b)
adjust the TALKBACK level using the
s
/
t
keys (
3
) on
the unit.
- When the function in
on
and
“TALKBACK”
is shown on the display,
press and hold the
PTT
switch (
11
), then use the
s
(
3a
) /
t
(
3b
)
keys on the unit to select the level. 9 levels from
01
to
09
.
-
Note:
The use of the
UP
/
DN
knobs (
12
) on microphone are not
allowed to adjust
TALKBACK
level.
3) PA
( PTT + MODE )
- Press and hold the
PTT
switch (
11
)
- Short press on
MODE
key (
6
) to activate or deactivate the
PA
(Public
Address) mode. An external loud speaker can be connected to
your THOMAS FCC AM/FM by the
PA jack
plug situated on the
back panel PA.SP (
D
). The CB message received or transmitted
into the microphone will be directed towards the external speaker
and be amplified. Adjust the
PA
volume with
VOL
key (
1
).
When PA mode is activated,
“PA”
and the used mode (
AM
,
FM
)
blink alternatively. When
PTT
switch (
11
) is pressed,
“PA”
replace
the active channel on the display. Release the
PTT
switch (
11
) to
display again the active channel.
4) NOISE GATE
( PTT + VOX )
- Press and hold the
PTT
switch (
11
).
- Short press the
VOX
key (
8
) to activate (
On
) or deactivate (
OF
)
the
NOISE GATE
. “ ” Is displayed when the function is active.
Noise Gate:
Prevents amplification of background noise. This results
in optimized signal levels.
E) 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 : 13.8 V / 27.6 V
- Dimensions (in mm) : 125 (L) x 180 (H) x 45 (D)
- Weight : ~ 0.9 kg
- Accessories supplied : Electret microphone with support,
mounting cradle, screws.
- Filter : ANL (Automatic Noise Limiter) built-in
2) TRANSMISSION
- Frequency allowance : +/- 200 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 adj.
channel : inferior to 20 µW
- Microphone sensitivity : 7 mV
- Maximum drain : 1.7 A at 13.8 V / 0.85 A at 27.6 V
- Modul. signal distortion : 3 %
3) RECEPTION
- Maxi. sensitivity at 20
dB sinad : 0.5 µV - 113 dBm AM / 0.35 µV - 116 dBm FM
- Frequency response : 300 Hz to 3 kHz
- Adjacent chan. selectivity : 60 dB
- Maximum audio power : 2.5 W
- Squelch sensitivity : minimum 0.2 µV - 120 dBm
maximum 1 mV - 47 dBm
- Frequency image
rejection rate : 70 dB
- Intermediate frequency
rejection rate : 70 dB
- Drain : 160 ~ 500 mA (13.8 V)
100 ~ 250 mA (27.6 V)
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