Midland Alan 52 DS User manual

USER MANUAL
MANUAL DE UTILIZARE
HASZNÁLATI UTASÍTÁS
INSTRUKCJA OBSŁUGI
Alan 52 DS

INDEX
CONTENT 2
FUNCTION AND LOCATION OF THE CONTROLS 2
HOW TO OPERATE WITH YOUR ALAN 52 DS 5
FREQUENCY BAND SELECTION 5
FREQUENCY BAND CHART 6
TECHNICAL SPECIFICATIONS 7

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CONTENT
• 1 portable CB transceiver
• car adapter with SO 239 external antenna jack
FUNCTION AND LOCATION OF THE CONTROLS
1. Antenna connector
2. Squelch knob : it allows to eliminate the background noises in rx and to operate in DS
mode (Digital Squelch).
3. On/O Volume Control. In ‘’o’’ position your transceiver is o. Turn this control
clockwise to switch on the unit. Turn the knob clockwise a little more to set the audio
level, until you get a comfortable reception.
4. MIC jack: connect by inserting the loudspeaker mike to the plug.
5. External loudspeaker jack: connect by inserting the loudspeaker mike to the plug.
6. Multifunction backlighted display.
This liquid crystal display has been projected to show the operative modality:
a. EMG function activated
b. Channel selected number (from 1 up to 40)
c. Lock: keyboard lock function activated
d. BATT: Run-down batteries indicator
6
9
11
12
10
13
12
14
15
16
7
8
18
19
17
20 ALAN52 DS

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e. AM/FM: it shows the emission mode and the Noise Blanker activation (in this
case, the indication will blink)
f. SC: SCAN function activated
g. DW: DUAL WATCH function
h. LOW function activated
i. The received signal strength and the power of the transmitting signal
j. RX/TX: TX=transmit mode; RX=receive mode
k. Frequency band selected
7. EMG button: emergency channel. By pressing this button, the unit automatically skips
to Channel 9 (emergency channel). The display will show EMG. It will not be possibile
to change accidentally the channel. To cancel this function, press the button again.
8. A/F–LCR button: to select AM mode or FM mode; the modulation you choose will
appear on the display. If you select a frequency band operating in FM mode only, the
A/F–LCR button will activate the LCR function (Last Channel Recall).
9. Microphone: during transmission, keep your mouth 4 cm far from the unit, and speak
with a normal tone of voice to the microphone.
10. H/L button: it selects the output power level during trasmission.When the unit is tur-
ned on, it always transmits with high power (4W). By pressing this button, the unit will
transmit with low power (1W). The display will show LOW. Press again the H/L button
to return to HIGH power level.
11. LOCK button: it allows you to lock the keyboard, thus avoiding accidental use of the
keys.
12. Q.UP - Q.DOWN buttons: to skip 10 channels up (Q.UP) or 10 channels down
(Q.DOWN).
13. Loudspeaker
14. Dual Watch: this function allows the synthonization on two dierent channels at the
same time. Thanks to this function, you can monitor a second channel. When a signal
on the second channel is received, the conversation on the first channel is automatical-
ly interrupted and the receiver switches on the second channel. The monitoring starts
again 4 seconds after the signal end.

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To activate this function, operate as follows:
- Select the desired channel through the channel selector
- Press the DW button
- Select the second channel
- Press the button DW again
- To cancel the function press again the DW button or the PTT button.
15. SCAN /Noise Blanker button: with this control, you can automatically seek for a busy
channel.
- Rotate the squelch clockwise until the background noise is no longer heard; or rota-
te the knob totally anti-clockwise to use the digital squelch.
- Press the SCANbutton: the transceiver will scan automatically all the channels until
a carrier is being received.
- When it finds the carrier, it stops and starts again some seconds after the end of the
communication on the channel.
- When the radio is transmitting, the scan function is deactivated.
- Keep pressed the SCAN button for 2 seconds to activate the Noise Blanker filter;
AM or FM will blink on the display.
16. button: display lighting.This function allows to operate in darkness conditions. By
pressing this button, the backlight will be activated. Push it again to deactivate it.
17. Push to talk button (PTT): Its pressure activates the transmission. When it is released,
the receiver is activated.
18. Channel UP: to skip to the next channel. Keeping this button pressed, the “autorepeat”
function is obtained.
19. Channel DOWN: to skip to the previous channel. Keeping this button pressed, the
“autorepeat” function is obtained.
20. Car adaptor contact: lift the button and take the car adaptor out.

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HOW TO OPERATE WITH YOUR ALAN 52 DS
1. Rotate the ON/OFF volume control clockwise to turn the unit on. Adjust the volume
for a normal listening level.
2. Adjust the SQUELCH control
3. Select the desired channel by the UP/DOWN or QUICK UP/QUICK/DOWN
buttons
Note: if the channel does not change,control that the EMG or LOCK button has not been pres-
sed. In this case, press the EMG or LOCK button to deactivate this function.
As far as the other functions are concerned, refer to previous instructions.
To transmit: press and hold the PTT button, then talk to the microphone.
To receive: simply release the PTT button.
CAUTION: DON’T EXPOSE THE DISPLAY TO EXTREME TEMPERATURES.
FREQUENCY BAND SELECTION
The frequency bands must be chosen according to the country you are in.
Procedure:
1. Switch o the unit.
2. Turn it on while pushing the A/F-LCR and SC buttons.
3. By pushing the ▲and ▼buttons, select the desired frequency band (see the chart in
the next page).
4. To fix your selection, press the A/F-LCR button.
NOTE1: If you select a frequency band which operates in FM mode only, the “A/F-LCR” control
activates the LCR function (Last Channel Recall).
NOTE2: In the UK frequency band, you can select directly the EC band by pushing the “AM/
FM” button for 2 seconds.

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FREQUENCY BAND CHART
Displayed digits Country
IItaly 40 CH AM/FM 4Watt
I2 Italy 34 CH AM/FM 4Watt
D4 Germany 80 CH FM 4Watt / 40 CH AM 4 Watt
EU Europe 40 CH FM 4Watt / 40 CH AM 1 Watt
EC 40 CH FM 4Watt
ESpain 40 CH AM/FM 4Watt
FFrance 40 CH FM 4Watt / 40 CH AM 1 Watt
PL Poland 40 CH AM/FM 4Watt
UK England 40 CH FM 4Watt English frequencies
+ EC 40 CH FM 4Watt
ATTENTION! The frequency band allowed all over Europe is 40CH FM 4W (EC) – See the
“Restrictions on the use” table.

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TECHNICAL SPECIFICATIONS
Channels ...................................................................... 40 FM (see the Frequency band chart)
Frequency Range*.................................................................................26.565 - 27.99125 MHz
Operating mode.........................................................................................F3E (FM), A3E (AM).
Antenna impedance ........................................................................................................50 Ohm.
Loudspeaker...............................................................................................................8 Ohm 0.5W.
Microphone.............................................................................................................condenser type
Power supply.................................................................min 7.2Vdc ;max 13,8Vdc; nom 12,6Vdc
Dimensions.............................................................................................................. 30x70x77 mm
Weight.....................................................................................................................................190 gr
RECEIVER
Sensitivity at 10dB S/N....................................................................0.5µV (AM), 0.25µV (FM)
Selectivity ............................................................................................................. more than 60dB
Squelch range..........................................................................................................0.25V-500µV
Audio output power......................................................................0.5W 8 ohm (10% distortion)
Distortion at 1000 µV...............................................................................................................3%
Audio frequency response.....................................................................................400-2400 Hz
Intermediate frequency.......................................................................................... I° 10.695 MHz
.........................................................................................................................................II° 455 KHz
Spurious response............................................................................................... more than 60 dB
Current drain at stand-by.................................................... 100 mA when the save mode is o
....................................................................................................45 mA when the save mode is on
TRANSMITTER
RF Output Power............................................................................duty cycle 10% 4W AM/FM
Frequency Tolerance..........................................................................................................0.005%
Harmonic Suppression........................................................................................more than 70 dB
Current Drain.....................................................................................................................900 mA
Modulation............................................................................................................AM 90% (± 5%)
.................................................................................................................................FM dev. 2.0KHz
* (covering all approved EU frequency bands)
All specifications are subject to change without notice.
WARNING: Direct plug-in ac/dc power supply must be used for disconnecting the transceiver
from the mains; the desktop charger must be positioned close to the unit and easily accessible.