Albrecht AE 4090 User manual

CB RADIO
AE 4090
OPERATING MANUAL
ALAN Electronics GmbH
Dovenkamp 11
D-22952 Lütjensee
www.albrecht-online.de

2
Index
Important note 3
Introduction 3
Accessories included 4
Safety Precautions 4
Front view 5
Rear view 5
Installation of the radio 5
Power supply 6
Antenna connection 7
Operation 8
Switching on and adjusting volume 9
Country switch setting 9
Selecting the operating channel 10
Adjusting squelch (muting) 10
AM / FM mode switch 10
Special interest channels 11
Direct channel access to CH 9 / 19 11
Scan mode 11
Transmitting and correct use of microphone 12
External sockets 12
External loudspeaker 12
Microphone socket 12
Service and Warranty informations 13
Legal Information 14
Albrecht Radio Passport 14
Declaration of Conformity 15
Technical Details 16
Service contacts 16

3
Important Note
Your Albrecht AE 4090 corresponds to the latest European CB standards. As a
unique feature, it has a software country switching which allows selecting the
operation mode according to the country, where You intend to use the radio. Please
make sure that You use only the country switching which is allowed in Your country
and according to Your CB licence! You may risk a penalty if authority members
will find that You are operating in not allowed modes!
40 FM 40 channels FM / 4 Watt (former “CEPT” settings with 40
Channels FM according to EN 300 135-2). This mode can be
used in nearly all European countries (some countries still
request an individual licence, even for 40 FM mode! See our
latest issue of the “Radio Passport”).
After installation or reconnecting to a power supply, Your radio will
always start in this factory preselected 40 FM mode.
80/12 80 channels FM / 4 Watt, 12 channels AM / 1 Watt for Germany
only. You need a licence to operate the radio in this mode, and
in certain border regions transmitting on channels 41 to 80 in FM
is not allowed.
40/40 40 channels FM / 4 Watt, 40 channels AM / 1 Watt. Latest
European Standard EN 300 433-2, not yet applied in all
countries. In Belgium, France, Germany, Italy, Portugal, Spain
and Switzerland You need a licence to operate the radio, while it
is already free of charges and licence in Finland and
Netherlands.
Introduction
Your new Albrecht CB Radio AE 4090, developed and manufactured in accordance
with the latest CB regulations, offers you:
•40 channels FM / 4 watt or
•80 channels FM / 4 watt / 12 channels AM / 1 Watt or
•40 channels FM / 4 Watts / 40 channels AM / 1 Watt
•Channel selection UP/ Down buttons on the radio set and on the
microphone
•Channel scan button at microphone
•Direct channel switching to CH 9 / 19 from microphone
•LED channel number display

4
•8-pin microphone socket, suitable also for amplifier microphones,
selective calling systems or Packet Radio modems/TNC’s
•Socket for external loudspeaker
Please read this operating manual through carefully. This will enable you to make
use of all the functions your new CB Radio has to offer as soon as possible.
Accessories included
Your AE 4090 comes operational with the following accessories:
•mobile mount
•2 knurled screws for the mobile mount
•2 rubber washers for the mobile mount
•fixed connected DC power cable with looped-in fuse
•spare fuse
•Electret hand-held microphone with pre-amplifier and UP/DOWN, PTT,
CH 9/19 and SCAN buttons
•microphone hanger
•various screws to fasten the radio and microphone fixing devices
•User manual with circuit diagram and Radio Passport
Safety Precautions
People with pacemakers are recommended as a precaution to consult their doctor
before operating the CB radio. Not all types of pacemakers are sufficiently protected
from radiation from a nearby transmitter, so do not assume it is safe to start
operation without checking! Please remember that you are in the immediate vicinity
of a transmitting aerial, particularly when used as a mobile. If your doctor, or the
manufacturer of the pacemaker, has recommended keeping a certain safe distance
from the aerial, then please follow their instructions!
Do not transmit without connecting the aerial and never touch the aerial during
transmission!
Please also take road safety into account! CB Radio (even when only receiving,
particularly when volume is turned up) can divert your attention from the road! Road
safety is of course to be given priority! Therefore only use your ALBRECHT AE 4090
when the traffic situation enables it to be used safely.

5
Front view
Rear view
Installation of the radio
You can either operate your ALBRECHT AE 4090 in the car or at home as a base
station. For installation as a mobile station in the car, a mobile mount device is
enclosed. Mount the set in such a way that it is not exposed to direct sunlight if
possible, as this would lead to an increase in the temperature and can decrease the
(set’s) working life. The set should also not be installed near a heater. Mount the set
in such a way that it is exposed to as little vibration as possible.
The mobile fixing device should be attached to the dashboard, the tunnel slot or to
any other suitable place using the enclosed tapping screws. Do not install the set in
a place where it could cause injuries in the case of an accident (be careful to ensure
Squelch
Receive Volume
Antenna socket
50 Ohms
PL-259 Standard
DC power cable
13.2 V
External speaker
8 Oms, min. 2 W
On / Off
LED-Channel Display
Transmit LED
(not all versions) Double Function
Channel / Country switch
AM -FM Switch
Brand Plate with
country switching
decription

6
free leg movement). Take care not to damage any underlying wires during
installation!
Then insert the radio into the mobile mount device. Secure the set with the large
knurled screws (using the enclosed plastic washers) firmly at the required angle.
Also mount the microphone hanger using the enclosed screws in an easily-
accessible place.
In order to prevent interference to the vehicle electronics from transmission in the
vehicle, please make sure to take any mounting instructions from the vehicle
manufacturer for radios and antennas into account.
Please note: European directives allow the car manufacturers to decide, whether or
not private radio transceivers may be operated in cars, this is also valid for antenna
installations. Please install Your mobile CB station only in accordance to car
manufacturer’s installation instructions.
Power supply
Your AE 4090 receives power from the 2 pin fixed power cable.
The red and black wires in the cable are for the power supply. The cable has a
looped-in fuse.
You can choose from two methods when connecting to the power supply (red and
black):
Example 1
The channel and the last used mode should be maintained after switching
off; the set should be able to be switched on and off at any time using the
volume / on/off switch.
Connect up the red to the positive pole on the vehicle battery (or elsewhere
in the vehicle’s electrical system with permanent plus) or to a 12 volt power
unit.
Connect up the black wire to the negative pole on the vehicle battery or the
power unit or to a well-conductive part of the car body.
Example 2
The set should be automatically switched on and off with the ignition switch
of the car. The radio shall always start in the factory default mode on CH 1 in
FM with 40 CH FM CEPT mode.
Attach the red wire to a part of the vehicle electrical system which is
interconnected to the ignition.
Connect the black wire to the negative pole on the battery or the vehicle
body.

7
Note for all connecting methods:
For EMC reasons, the cable used to connect to the power supply should be no
longer than 3 metres.
If you wish to operate your set at home from the mains supply then please only use
a stabilized power pack with at least 2 amps permanent current-carrying capacity.
Under no circumstances should you use a car battery charger, as these are not
stabilized and during open circuit reach such high voltage levels that your radio set
could be destroyed.
If in base station use it is important to you that the stored stations are kept even after
switching off and on again, then please do not switch the external power supply
power unit off when you switch your set off for a short time. Only use the on/off
switch on the transceiver itself.
Never repair a blown fuse with silver paper or with alumunium foil! If the
fuses keep blowing, then please give your radio set to your servicing dealer
to be repaired or hand it in to Albrecht’s service station.
The maximum allowed voltage variation for this radio is up to 15.6 volts.
Never exceed this voltage under no circumstances! The transmitting stages
for your AE 4090 are electronically stabilized, and therefore it is impossible
to increase output by means of excessive supply voltage. Such attempts may
lead to serious damage to the radio set but will never increase output power!
Antenna connection
Connect your CB antenna to the ANT socket on the rear side of your ALBRECHT AE
4090. Most CB antennas must be tuned to best radiation during installation to give
highest effective communication range. CB specialists do that job with a standing
wave meter to check and adjust the aerial. Tune the antenna to the best standing
wave ratio (SWR) on an intermediate channel e.g. using Channel 1 in 80/12 mode
(26.965 MHz) or Channel 20 in all other modes.
On this channel you should obtain a SWR of approx. 1.5 or less. If the SWR
deteriorates on the highest (Channel 40) and lowest (Channel 41) channels up to a
value of 2.5, then your aerial is still acceptable. SWR above 3 is too bad for good
communication range. A bad SWR may also indicate that there is perhaps an
installation error or missing ground. Problems may be caused through missing
ground, especially in boats and motor homes with fiber glass body. For these cases,
Albrecht offers a special connecting cable with matching box as “artificial ground”
(AKM 27)
Some antennas, like “Gamma II” are broadbanded and do not need any
retuning during installations.

8
Even if your AE 4090 has a particularly robust transmitter high-
level stage which can even withstand mismatching of SWR=3, you
should still never transmit without an antenna!
Operation
Before switching on
•Turn SQUELCH control left as far as possible
Switching on and adjusting volume
The on/off switch is combined in the VOLUME control. To switch on:
•Turn VOLUME control from OFF position slightly right. LED display will be
illuminated. Then turn further until desired volume is reached.
Selecting the correct country code
Starting with European 40 CH FM system
When You switch on Your new CB radio for the first time, it will start with the Europe-
wide used 40 Channels FM mode. If You are not sure what is allowed in Your
country please ask local authorities before using the radio. If You should not need
any individual CB licence in Your home or guest country, You should use this factory
default setting:
40 FM This is former “CEPT” mode, the programming which is allowed in most
countries. Here the radio works on the international 40 Channels in FM
mode. The Mode switch AM –FM on the front side allows only receiving
in AM and FM, but only transmitting in FM mode ( in some countries You
need a licence, even for 40 CH FM only!)
Programming Country codes for AM and FM
If You live or are travelling in a country allowing AM and FM, You may now select
between two different settings: The international AM / FM system for 40 channels
and the German AM –FM channel system with 80 channels FM and 12 channels
AM.
Please read carefully the “Radio Passport” in the last chapter of this manual
before reprogramming the unit Take Your home country licence with You
when travelling abroad and using 40/40 or 80/12 mode.
Switching to 40/ 40 system (B, CH, D, E, F, Fin, I and P)
40/40 This position can be used in those countries, where already all 40
international channels are allowed to be used in AM and FM. AM was
traditionally used by CB from the beginning in the early 60’s in USA, and it
is still the preferred mode of all truck drivers in the world. Please use this
mode only in countries according to the list in the Radio Passport, and
please apply for an individual licence where requested.

9
To switch to this system
•Switch the radio off
•Press Down button and keep button pressed
•Switch on the radio at the same time
•Release the button
The radio has now switched to AM / FM on all 40 channels. You may select any of
these channels and operate in Am or FM. The last used channel is kept in a memory
depending on the mode.
Example: If You have used CH 1 in AM before, then switch to FM, and select CH 8
for FM, You may later toggle between CH 1 /AM and CH 9 / FM with the AM/FM
switch. In Germany, use of this software position is legal, but transmitting in AM is
only allowed on channels 4 to 15.
Switching to 80/12 channel system (Germany only)
80/12 This position is only allowed to be used in Germany, and an individual
licence is necessary. Restrictions are still in force in the border regions to
other countries (except to Czechia), where transmitting on channels 41 –
80 is not allowed or only with a special licence.
To switch to this system
•Switch off the radio
•Press UP button and keep pressed
•Switch On the radio again
•Release UP button
You can now receive on all 80 channels in FM and AM, but You can transmit on all
these channels only in FM. In AM the channels 4 to 15 are enabled for transmitting.
If You should try to transmit in AM on other channels, the LED will blink to warn You.
Transmission on such channels is technically deactivated.
Programming back to European 40 FM system
You may switch back to the initially used FM only system at any time either by:
•Disconnecting power supply for some seconds (disconnect cable or take
out fuse, or switch off the external power supply)
or •Switch off the radio
•Press UP and DOWN together and keep both buttons pressed
•Switch on again
•Release both buttons
Note: This radio utilizes a CPU system especially developed for this radio. Other
(illegal) channel systems are not stored in the CPU system and are not available at
all.

10
Selecting the operating channel
On the radio set:
•Up or Down buttons You can continuously select channels. The present channel
is displayed.
On the microphone:
•Press the ∧or ∨button on the microphone briefly, to switch up or down a channel.
•Press the respective button longer to run up or down through the channels. The
present channel is displayed.
Adjusting squelch (muting)
Particularly in FM, noise can be a nuisance on a free channel. With the muting
control (SQUELCH) You can suppress this noise -but also signals which are too
weak to be received properly.
This is how to adjust the signal strength required to switch on the loudspeaker, using
the SQUELCH control knob:
The further the control knob is turned to the right, the stronger a signal has to be in
order to be audible through the loudspeaker.
In order to adjust the set to be the most sensitive to incoming signals, switch to a
free channel:
•Use the up / down switches to find a free channel, where no signal is
displayed.
•Then turn the SQUELCH control carefully to the right until the noise just
about disappears.
Now the loudspeaker stays off when on a free channel but it switches back on when
receiving even very faint signals.
The muting adjustment is particularly important during channel
scanning. In this mode the point to which the set is adjusted
decides whether scanning is stopped at the signal or not.
Therefore you should test the various muting settings for various
signal strengths and get to know this function.
AM / FM mode switch
In all country programming modes FM modulation (transmit and receive) is possible
on all selectable channels. AM receiving is also allowed and possible on all
channels, but AM transmission is disabled completely in 40FM mode and in the
German mode 80/12 on channels 1 to 3 and 16 to 80. In 80/12 mode You can only
transmit AM on channels 4 to 15. If You should try to transmit on a forbidden
channel in the German mode in AM, the display will blink.
Where allowed, You can switch with the AM/ FM switch between both modulation
modes.

11
When you switch on the set the first time it operates on FM.
Special interest channels
There are a few channels which have established themselves for certain purposes:
Channel 1 Call channel in FM (Germany only)
Channel 9 Call and emergency channel, in Germany particularly this
channel is also used by all truck drivers in AM.
This means: a large number of stations are listening in. If
the worst comes to the worst (e.g. in case of accident etc.)
there is a good chance that someone will be listening.
To call other stations, who you know are listening in on channel 9, you can also use
this channel. Call up the desired station on channel 9. As soon as contact has been
made, agree on a free channel for your conversation and then channel 9 will be free
again for other calls.
An emergency channel can of course only work if as many stations as possible are
listening in. Therefore listen in to this channel as often as possible!
Channel 16 Water sport channel
Channel 19 Trucker channel on AM in France, Spain and Italy
Channel 24/25 Data transfer (Packet Radio, Germany only)
Some recommendations have been worked out by the CB clubs for the new
channels 41 to 80 in Germany. To find out which channels are suitable for special
purposes, please get in touch with the respective groups or check in CB magazines.
Direct channel access key CH9/19
Your transceiver has an extra button on the microphone which provides direct
access to the most important channels 9 and 19 described in previous chapter.
You can toggle with the button between “normal” channel selected previously, CH 9,
CH 19 and back again. Just press the button consequently.
Scan mode
Your AE 4090 has an automatic channel scan, which can be used to observe all
channels consequently.
First choose the mode (AM or FM). Adjust the muting control to the point at which the
receiver should open (see also ‘Adjusting squelch’).
Start channel scan
•Briefly press the button SCAN.
•Scan starts almost immediately by scanning all the channels upwards
•Scanning is stopped at each signal worth receiving and you can listen in to the
conversation.
If you leave the set alone it will re-start a) after the communication on the channels
has stopped or b) after about 5 seconds observation time, if the communication
should last longer.

12
Stop channel scan
•You can stop the scan at any time by pressing the SCAN button a second time.
•Pressing the transmission button will also automatically stop the scan modus.
Transmitting and correct use of microphone
With the transmission button (Push To Talk) on the side of the microphone you can
switch between receiving and transmitting:
•Press PTT button to transmit.
If Your radio is equipped with a TX control LED, this will light when You
are transmitting on an allowed channel in an allowed mode. (Note: Some
versions of this radio do not have a TX-LED)
•Release PTT button again to switch back to receiving.
When the transmission PTT button is depressed, you can speak from a distance of
about 5-10 cm into the microphone. After pressing the PTT button, please wait about
½ second before You start speaking. Please remember-that different from GSM
phones-You share one channel common for transmit and receive, and Your
transmitter and the receiver(s) on the distant side need a certain time to switch on.
The modulation amplifier of your AE 4090 is sensitive enough and enables you in
most cases to speak with even more distance, depending on how loud your voice is.
An automatic regulator ensures that your partner always hears your signal at the
same volume.
It is best to test the best distance from the microphone for yourself with the help of
another station.
External sockets
External loudspeaker
Depending on the surrounding noise, it can be advisable to hook up an external
loudspeaker. Usual commercial radio loudspeakers with 4-8 ohms impedance and 2-
4 W minimum output can be plugged in.
The cable can be up to 3 metres long. For car loudspeakers, make sure to use a
two-pin 3.5 mm jack plug and ensure that none of the loudspeaker connections are
attached to the vehicle chassis.
Microphone socket
Your AE 4090 has an 8 pin microphone socket on the front side. To enable the
additional functions, like UP/Down, Scan and direct channel control 9/19 from the
microphone, the socket has a special wiring only valid for this transceiver model.
Apart from the hand microphone included in the package, you can also hook up
other microphones, with or without preamplifier, or with or without selective calling
devices. According to the latest regulations you are also allowed to plug in modems
or so-called TNC`s for data transfer (Packet Radio). However, other type of
microphones must be specially soldered to the 8 pin connector and do not allow
CH9/19, UP down or Scan switching.

13
Please note that data transfer is only permitted on certain channels and only for non-
commercial use and not in all countries.
Service and Warranty informations
Troubleshooting
Check at first the power supply and the fuse. A problem may be caused through power supply, when
no LED light appears after switching on. If the unit works in a strange way, disconnect the power
supply cable (or take out the fuse from the holder), while the radio remains switched on, wait some
time (minimum 10 seconds), and then reconnect power cord again.
Check the microphone and antenna connector. We think You cannot do more in case of a problem.
Please ask Your dealer or consult our service hints in the Internet. If You should return the radio to
Your dealer for repair, do not forget to describe the problem as exactly as possible.
European 2 years warranty
The distributor, dealer or retail shop where You bought the radio warrants to the original retail
purchaser of this product that should this product or any part of it, under normal use and conditions,
be proven defective in material or workmanship within 2 years from the date of original purchase,
such defect(s) will be repaired or replaced with new or reconditioned product without charge for parts
and repair labor. To obtain repair or replacement within the terms of this warranty, the product is to be
delivered with proof of warranty coverage (e.g. a copy of Your bill of sale), specification of defect(s),
to the distributor, dealer or his authorized repair center.
Liability for communications range of this product is disclaimed. The warranty does not apply to any
product or part there of which, has suffered or been damaged through alteration, improper installation,
mishandling, misuse, neglect, accident, or by removal or defacement of the factory serial number
label(s). The warranty does not apply to accessory parts or problems caused through not authorized
or not recommended accessories like other than the supplied microphone, external antennas,
external power supplies and overvoltage caused through external power supplies, lightning or
overvoltage defects via antenna or other cables, broken or damaged acrylic glass windows and
cabinet parts.
Please contact the dealer or person where You have purchased Your CB radio.
Where to find service hints and service documentation
The complete technical documentation is updated regularly. You can download the latest versions of
user manuals, technical documents and conformity declaration, as well as service hints or FAQ’s any
time from our server under
http://www.albrecht-online.de/service
If You should have a problem, please have a look to the service hints or frequently asked questions
(FAQ) before You send Your CB radio back to the service center. Please note that the acceptance of
AM+FM in the different European countries has just started and may be subject to unpredictable
changes. Our homepage will provide the latest informations about using the radio.

14
Legal Information
The radio may be used in european Countries only according to following informations, which we
publish as “Radio Passport”. Because the number of countries allowing the new AM standard is
changing, the latest version of this radio passport is published on our Internet Web server and may be
downloaded any time. (http://www.albrecht-online.de/service) The version printed in this user manual
has been issued in March 2002
ALBRECHT RADIO PASSPORT AE 4090
This CB radio complies to the latest European regulations (R&TTE directive and European harmonised
standards) and has been notified in the countries according to following table: (as of March 12, 2002):
Country Country switch position Licence and operating conditions
Operation only with individual licence
Austria 40 FM Individual licence requested (“Bewilligung”)
Belgium 40/40 and 40 FM Residents in Belgium need licence
Germany 80/12 or 40/40
Note: Using 40/40 is allowed,
but transmitting on channels 1-3
and 16-40 in AM forbidden
Licence and yearly charges requested.
Transmitting on channels 41-80 in certain border
regions not allowed (special licence necessary)
France 40/40 Licence and one-time charges
Great Britain (UK) 40 FM Residents of UK need CB licence
Italy 40/40 and 40 FM Licence and regular charges for all CB radios
Portugal 40/40 Licence and one-time charges
Switzerland 40/40 and 40 FM Licence and monthly charges
Spain 40/40 and 40 FM Licence and regular charges
Operation without licence and charges allowed
Belgium 40FM
40/40 Free for short-time travellers up to 1 month Home country licence accepted for travellers
Denmark 40 FM Free of licence and charges for all users
Finland 40/40 and 40 FM Free of licence and charges for all users
France 40 FM Free of licence and charges for all users
Germany 40 FM Free of licence and charges for all users
Greece 40 FM Free of licence and charges for all users
Hungary 40 FM Free of licence and charges for all users
Iceland 40 FM Free of licence and charges for all users
Ireland 40 FM Free of licence and charges for all users
Luxembourg 40 FM Free of licence and charges for all users
Netherlands 40/40 and 40 FM Free of licence and charges for all users
Norway 40 FM Free of licence and charges for all users
Portugal 40 FM Free of licence and charges for all users
Spain 40 FM Free of licence and charges for travellers
Sweden 40 FM Free of licence and charges for all users
Switzerland 40 FM Free of licence and charges for travellers
United Kingdom UK 40 FM Free of licence and charges for travellers
Important Note: Please respect the licence conditions in the above listed countries and do not use the radio
without licence, where necessary. For travelling with Your radio, we recommend to provide a copy of Your home
country licence document and this Radio Passport together with the radio. The above list is based on public
available informations, while country specific requirements may change without notice during the harmonisation
process in Europe, we recommend to ask local authorities before travelling.

15
Declaration of Conformity / Konformitätserklärung
We hereby declare that our product: / Wir erklären hiermit, dass unser Produkt
CB-Radio Albrecht AE 4090
satisfies all technical regulations applicable to the product within the scope of EU Council Directives, European Standards
and national frequency applications:/ alle technischen Anforderungen im Geltungsbereich der EU Richtlinien, europäischer
Normen und nationaler Frequenzanwendungen einhält:
73/23/EEC, 89/336/EEC and 99/5/EC
EN 300 135 -2 / EN 300 433-2
EN 301 489-1, EN 301 489-13, EN 60 950
All essential radio test suites have been carried out. /
Alle für das Produkt vorgeschriebenen Funktestreihen wurden durchgeführt.
ALAN Electronics GmbH
Dovenkamp 11
D-22952 Lütjensee
This declaration is issued under our sole responsibility. Basing on not harmonised frequency applications, the CB radio may be
used only in listed countries according to selected channel programming. An individual licence for operating this radio in AM +
FM (80/12 in D, 40/40 in B, CH, D, E, F, I, P) is requested. In Finland and Netherlands 40/40 operation is free of licence. If
the radio is programmed to 40 FM only, it may be used without license and free of charge in nearly all EU Countries + Island,
Switzerland, Norway, Hungary (except Austria, Italy, where individual licence is requested). Residents of Belgium, Spain,
Switzerland and Great Britain (UK) need a CB licence in their home country, while travellers from other European countries
may use 40 CH FM during travelling in these countries free of licence and charges.
Diese Erklärung wird unter unserer alleinigen Verantwortung abgegeben. Dieses Funkgerät darf wegen der nicht
harmonisierten Frequenzanwendungen in AM + FM nur mit gültiger Einzelgenehmigung bzw -Zuteilung in den Ländern
B, CH, E, F, I, P (40 / 40 Kanäle) und D (80/12 oder 40/40 Kanäle) in Betrieb genommen werden. In den Niederlanden und
Finnland ist der Betrieb auf 40/40 Kanälen anmelde-und gebührenfrei. In Deutschland ist mit der Programmierung 80/12
Sendebetrieb auf den Kanälen 41 -80 in bestimmten Regionen entlang der Grenzen der Bundesrepublik Deutschland nicht
oder nur mit Sondergenehmigung gestattet. Mit Programmierung 40/40 darf dieses Gerät auch in Deutschland betrieben
werden, jedoch darf in AM (bis auf weiteres) nur auf den Kanälen 4-15 gesendet werden. Mit der Programmierung 40 FM
kann das Gerät in fast allen EU Staaten (ausser Italien und Österreich, dort ist eine individuelle Bewilligung des örtlichen
Fernmeldebüros notwendig) anmelde-und gebührenfrei benutzt werden. Bewohner von Belgien, Grossbritannien, Spanien und
der Schweiz benötigen in Ihrem Heimatland eine Genehmigung (CB Licence). Die vorübergehende Benutzung von 40 Kanälen
FM durch Reisende aus anderen europäischen Ländern ist in diesen Ländern jedoch anmelde-und gebührenfrei erlaubt.
Point of contact/Ansprechpartner: Dipl.-Phys. Wolfgang Schnorrenberg
Place and date of issue:
Lütjensee, 12. 03. 2002
(Signature)
Dipl.-Phys. Wolfgang Schnorrenberg
ALAN Electronics GmbH

16
Technical Details
Microphone socket wiring Packet Radio & others
Pin 1 Ground, shield Pin 1 Ground
Pin 2 PTT-TX (on ground for transmit) Pin 2 Transmit key
Pin 3 PTT-RX (on ground for receiving) Pin 3 Receive audio
Pin 4 Mic audio and MIC supply Pin 4 Transmit Audio
Pin 5 Direct channel key versus ground
Pin 6 Scan key versus ground
Pin 7 Channel UP key versus ground
PIN 8 Channel Down key versus ground
Tip for specialists
Your AE 4090 package includes a preamplified electret microphone. In the
microphone is a board on which the mic gain can be adjusted with a small
screwdriver. The mic gain has been factory preset to medium position. If required,
the gain can be adjusted as desired.
Transmitter
Transmitting power 4 Watt FM
1 Watt AM
Modulation sensitivity 2.5 mV at >1 kOhm
Harmonic and spurious radiations -90 dBc = 4 nW
Max. frequency deviation less than 2.0 kHz
AM modulation degree 90%
Receiver
Sensitivity (FM) (SINAD) better + 3dbµV EMK for 20 dB
Sensitivity (AM) (SINAD) better + 3dbµV EMK for 12 dB
Adjacent channel selection better 60 dB (EN 300 135-1)
better 48 dB (EN 300 433-1)
Intermodulation rejection better 54 dB (EN 300 135-1)
better 48 dB (EN 300 433-1)
Image rejection better 48 dB (EN 300 433-1)
Audio output power ca. 2 Watt to 8 Ohm load
© ALAN Electronics GmbH, March 2002
www.albrecht-online.de
Service-Hotline: [phone]
Service-Fax: [phone]
e-mail: [e-mail]