Midland ALAN 235 ESP D80 Bedienungsanleitung Seite 12

TO RECEIVE
Turn on the power by rotating VOLUME clockwise. Set Squelch control to maximum counterclockwise
position. Set channel selector to the desired channel. Adjust Squelch to cut out annoying background
noise when no signal is received.
TO TRANSMIT
Press the push to talk button on the microphone and hold it at an angle of about 5-7,5 cm to your mouth
and speak in a normal voice. To receive again release the push to talk button.
Be sure the mic plug is firmly connected to the jack, for if the connector becomes loose, you may end
with squeal, feedback and other problems.
SCAN button
With this control, you can automatically seek for a busy channel.
• Turn the Squelch clockwise until the background noise is no longer heard.
• Press the ''SCAN'' button: the transceiver will scan automatically all the channels until a carrier is
being received.
• When it finds a carrier it stops and starts again some seconds after the ending of the communication
on the channel.
When the radio is transmitting, the scan function is deactivated.
Dual Watch
This function allows the synchronisation on two different 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 automatically interrupted and the receiver switches to the second
channel. The monitoring starts again 8 seconds after the signal ends/stops.
To activate this function, operate as follows:
• Select the desired channel using 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.
Note!
If after activating the DW-function no other action is carried out for 8 sec. the transceiver is set into
normal transmit mode.
6
SPECIFICATIONS
GENERAL
Channels ........................................................................................................................... 80 AM; 12FM
Frequency Range ................................................................................................ 26.565 to 27.405 MHz
Frequency Control ............................................................................................................................ PLL
Operating Temperature Range ..................................................................................... -10
DC input voltage ............................................................................................................ 13.8V DC
Size ......................................................................................................... 150 (L) x 40 (H) x 170 (P)mm
Weight ...................................................................................................................................... 0,950 Kg
RECEIVER
Receiving system .......................................................................... Dual conversion superheterodyne
Intermediate frequency ................................................................................................. I
.......................................................................................................................................... II
Sensitivity ..................................................................................... 0.5
.................................................................................................... 0.5
Audio output power @10% THD .................................................................................. 2.O W @ 8 Ohm
Audio distortion ................................................................................................. Less than 8% @ 1KHz
Image rejection .............................................................................................................................. 65dB
Adjacent channel rejection ............................................................................................................. 65dB
Signal/Noise ratio ........................................................................................................................... 45dB
Current drain at stand/by ............................................................................................................. 250mA
TRANSMITTER
Output power ............................................................................................. 4W FM 1W AM @ 13.8V DC
Modulation ...................................................................................................................... AM: max. 85%
............................................................................................................................. FM:1,8KHz
Frequency response .......................................................................................... from 400Hz to 2.5KHz
Output impedance ........................................................................................... RF 50 Ohm unbalanced
Signal/Noise Ratio .................................................................................................................40 dB MIN
Current drain .............................................................. 1100mA (Power position with no modulation)
All specifications are subject to change without notice.
Approval:
The ALAN 235 ESP D80 possesses an approval from the „Bundesamtes für Zulassungen in der
Telekommunikation". In Germany this model is liable for registration and charges.
°
C to +55
°
IF:10.695 MHz
°
IF:455 KHz
µ
V for 10 dB SINAD in FM mode
µ
V for 10 dB SINAD in AM mode
±
7
°
C
±
15%
0,2KHz