Channel Selection - stabo xm 3004e VOX 12/24 Manuel D'utilisation

Operation
Operation of the stabo xm 3004e VOX 12/24 is practically self-explanatory. After establishing
all connections, switch your CB radio device on using the left control knob 1 (OFF/VOL)
which also regulates the volume. The display should now light up. If the display screen
remains dark, check the power supply and the fuse. You must be able to hear noise from
the speaker. If this is not the case, check whether the microphone is connected and turn the
middle control knob 2 (SQ) anti-clockwise until you hear noise.
KEY BEEP Acoustic key acknowledgement (11)
Key Beep is activated by switching on the device while pressing the DN key 11. BP is shown
on the display screen to indicate that the Key Beep function is switched on, and all operating
inputs on the device are confirmed by a short beep sound.
ROGER BEEP (11)
Roger Beep is activated by switching on the device while pressing the UP key 11. A
is
shown on the display screen to indicate that the Roger Beep function is switched on. A short
beep sound is made when you release the PTT key. This signals to the conversation partner
that he/she can now transmit.
Reception

Channel selection (3)

You can set the desired channel that you want to listen to using the right large rotary switch
(channel switch) 3.
Squelch (2)
The stabo xm 3004e VOX 12/24 has a circuit for noise suppression (squelch) which
suppresses the reproduction if the signal is missing or too weak. The signal level at which
the circuit takes effect is set using the SQ control 2. Turn to the left to reduce this level.
Turn to the right to increase it.
In case of variable reception conditions, such as in mobile operation, it may be necessary to
readjust regularly.
ASC (Automatic Squelch Control) (2)
ASC is a circuit patented by Groupe President Electronics SA, France. This circuit analyses
what is referred to as the signal-to-noise ratio (ratio of the desired signal to the interference
signal). The desired signal is only connected to the speaker if it is worthy of reception, i.e.
largely noise-free. Constant readjustment, as is often necessary with the field strength-based
squelch circuit, is therefore no longer necessary, which is beneficial for road safety. ASC can
be used with AM and FM. This is activated and shown on the display when the squelch control
is in the leftmost stop position.
VOX (9)
VOX is an automatic, voice-controlled transmit/receive switcher.
When VOX is switched on, you can transmit hands-free. You do not need to press
the microphone transmit key in VOX mode.
Position the microphone at a max. distance of 40 to 50 cm and avoid loud ambient noises in
order to prevent unintentional transmission.
VOX is switched on and off by pressing the VOX key 9 once. VOX is shown on the display
screen to indicate that VOX is activated.
The response sensitivity of the VOX can be adjusted in five steps.
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