PRESS INFORMATION
March 1996
CeBIT Hanover, 14 - 20 March 1996. Allgon, Hall 26, Stand E25

Cost efficient channel selective repeaters for
GSM and DCS 1800 networks news at CeBIT

Allgon System will exhibit a selection of new products at this year’s CeBIT. The company, which develops and markets base station equipment such as combiners and multi-couplers, and repeaters, is based in Stockholm, Sweden.

Channel Selective Repeaters - a development overview
Through a comprehensive R & D programme, which is part of a separate development centre named Allgon Innovation, a new generation of repeaters for cellular telephony systems is currently being marketed, manufactured and supplied by Allgon System. Two important criteria are low installation and operational costs. By offering a channel selective concept with a separate PA, power consumption can be reduced leading to higher MTBF and lower generation of intermodulation products. It also eases cell planning using channel selective repeaters due to the fact that neighbouring, unwanted, cells are not repeated. As a result, the future use of band selective repeaters in GSM and DCS 1800 networks is likely to be limited as improvements in technology make channel selective repeaters a more cost efficient alternative.

Allgon’s Channel Selective Repeaters
The company’s range of Channel Selective Repeaters offer a continuously adjustable gain of between 45 and 85 dB with a noise figure of <7 dB at maximum gain. Each unit can be equipped for up to 4 and as many as 8 carriers in a frequency range of 870 - 960 MHz. The patented automatic gain and output




level supervisor function means reduced maintenance costs, a higher degree of reliability than competing models and simplified base station design. The weight of the units varies between 16 and 28 kg depending on configuration with an operational temperature range of between -25oC to + 55oC.

The new Urban GSM Antenna for 870 - 960 MHz
This vertically polarized antenna, especially designed for city-centre use can be mounted on walls, in towers and on masts. Its discrete design also gives a low wind load. The Urban Antenna offers horizontal beam widths of 65o, 90o, 105o and 120o all of which are available in a variety of gains and tilted versions.

The - Adjustable Electrical Down Tilt (AEDT) is now optional for Allgon System’s city antenna range. The AEDT function offers simple in-field antenna adjustment. Available in horizontal beam widths of 65o, 90o, 105o and 120o it offers a wide range of gain in horizon from 0 dB to 15 dB. This enables efficient control of cell size while aiding interference control without adding further intermodulation.

The TTA, Tower Top Amplifier has been designed to lower cellular telephony infrastructure costs through improved uplink sensitivity. In this way, the number of BTS required for a given cellular area can be reduced. Depending upon the system configuration, the sensitivity gain can be as high as 5 dB. The TTA, which offers ultra low weight and volume, comes in two, customer adaptable versions; a receive antenna version with a built in BP filter and balanced LNA and a duplex antenna version featuring a full diplexer. This means that the Tx and Rx signals are first split into two branches and then recombined.

The RASU (Radio Antenna Supervisory Unit) performs regular, automatic and centralized monitoring of receiver and transmitter antenna functions, recording data and reporting results. Measurements take only a few seconds to perform with an average 24-hour regularity. The RASU is programmable using a portable PC allowing parameters such as number of antennas, transmitter antenna monitoring, alarm limits, user ID and relay function in




response to alarms to be entered. Operation can be carried out locally or remotely via any Hayes compatible modem on a fixed phone line or cellular modem. Alarm relay contact output is available for connection to the site’s alarm panel.

PCS TMDA ATC
The Personal Communications System Time Division Multiple Access Auto Tune Combiner is a filter type, cavity resonator, transmit power signal combiner. Operating in the present PCS down link frequency range, 1930 - 1990 MHz, the IS-136 type of TMDA signal, at an average power level of 60W to each input, is merged in the basic four channel combiner unit. Several combiners can be connected using phasing networks to form various channel combinations
The 30 dB power dynamic range in conjunction with rapid tuning qualifies this combiner for future Dynamic Channel Allocation (DCA) use. The standard microprocessor based Monitoring and Control (MAC) function in each combiner enables the user via the RS-232 or RS.485 (422) to set various combiner alarm thresholds as well as accessing operating status. The MAC function can easily be adapted to satisfy user requirements.


For further information contact:
Allgon System
Henrik Huss, General Manager System Repeater Equipment
Tel: +46 8 540 826 81
Lars Berglund, General manager, Base Station Antennas
Tel: +46 8 540 822 58
Lars Dousa, General manager, Base Station Equipment
Tel: +46 8 540 833 24















PRESS INFORMATION
March 1996

CeBIT, Hanover, 14 - 20 March 1996.
Allgon, Hall 26, Stand E25

Dual-band two-in-one- antennas
make market entrance

Allgon TA , which supplies antennas to hand portable telephone manufacturers world wide, has developed a new antenna solution for dual-band applications which it will exhibit at this year’s CeBIT.

A current trend on the international cellular telephony market is the creation of new networks operating at higher frequencies than existing systems. Higher frequencies are needed to meet future capacity demands due to lack of spare frequency channels on the 800/900 bands. Spearheading this development are US and European operators which are looking to create complementary networks in varying frequency bands. In Europe, the GSM 900 MHz and DCS 1800 MHz systems will prevail making up multi-national, dual-band networks. In the United States the picture is more complex. Here, a larger number and combination of frequencies is called for to take care of the country’s national analogue and digital systems.
Common to all is the fact that the current situation has created a strong need for new equipment and the manufacturers of cellular telephones are looking to quickly introduce products on the market which, in one and the same unit and in a user transparent and financially acceptable way, can cope with varying system configurations without reducing the transference quality of speech and data.




Vital to this development are combined solutions which do away with the need for a cellular phone to carry two or more antennas. For this reason, Allgon TA has developed a range of dual-band two-in-one antennas designed to satisfy the needs of the major cellular telephone manufacturers world-wide.

Dual-band two-in-one antenna
The dual-band two-in-one antenna is based upon Allgon’s patented helix mount antenna already in wide-spread use in cellular telephones and a smart matching network. The advantage of the new compact radiator is that it eliminates the need for dual-band cellular phones to carry more than one antenna and also that it gives our customers a total cost efficient solution. Of course, the solution provides high efficiency. Features include variable frequency combinations and multi-phone adaptation allowing the antenna to be fixed to a multitude of standard telephone versions. By matching the same antenna with a variety of telephone makes and models it has been possible to create a solution which satisfies the twin needs of low total cost and high quality.

Speech quality and capacity movements
Allgon TA also has a family of products for antenna diversity which decreases bit error rates. This powerful solution suits all kinds of systems and requires no system support. Through our know-how and resources in electromagnetic wave propagation analysis, it is now possible to integrate the antenna into the phone to create a solution with a high diversity gain compared to traditional units.


For further information contact:
Allgon TA
Gunnar Forsblad, marketing manager
Tel: +46 8 540 822 00














PRESS INFORMATION
March 1996

CeBIT, Hanover, 14 - 20 March 1996.
Allgon, Hall 26, Stand E25

Antennas, adapters and handsfree among new
items available from leading antenna supplier

Allgon Mobile, which is specialized in the development and sales of external vehicle and boat antennas, and cellular phone accessories has a number of new products on show at this year’s CeBIT.


Antennas
Among the products on display from Allgon Mobile will be a new range of DCS 1800 antennas including the MiniMag and Base 2000, the WindowClip, Clic, Sportflex and Allgon Power DCS, and a replacement radiator for the Nokia 2140. Available too is a new cable compensator available for a range of GSM or DCS 1800 units.

Handsfree
Also on display is a new fixed handsfree system designed for use with Nokia 2110 telephones. The unit features radio mute, ignition sense and private call functions. Private call means that the phone can be removed from its holder while still connected to the vehicle’s external antenna. The system’s advanced automatic duplex/semi-duplex microphone technology means that a lot of the ambient noise disturbance which can otherwise ruin speech quality for the receiving party is eliminated.






A series of adapters has also recently been launched. These are compatible with the Motorola 8200/6200 (FLARE), Siemens S4 and Siemens S3. All three adapters offer high-effect electrical connections and a snug connector fit.

The Allgon Power DCS1800 and Allgon Power II GSM 900 are two new booster products which are designed to eliminate cable losses when DCS1800/PCN telephones are used in vehicle installations. The Allgon Power DCS1800 has a transmission power of 1W while the Allgon Power II GSM 900 has a 2W output.

For further information contact:
Allgon Mobile AB
Teija-Marie Pierre, Market Communications Manager
Dennis Mellin, International Sales Director
Tel: +46 8 540 822 00





PRESS INFORMATION
March 1996

CeBIT, Hanover, 14 - 20 March 1996
Allgon AB, Hall 26, Stand E25

Allgon AB displays full range of mobile telephony products

Swedish based Allgon AB develops, manufactures and markets products for radio signal transmission within mobile and personal telephony. This ISO 9001 certified supplier’s product range comprises antennas and base station components marketed through wholly owned subsidiaries on all the major European markets, Asia and the United States as well as through a network of distributors in over 40 countries. The company works closely with the world’s leading mobile telephone manufacturers which use Allgon’s antennas and accessories for their products.
Allgon AB is divided into three Business Areas: Allgon Mobile which is specialized in the development and sales of external vehicle and boat antennas, and cellular phone accessories; Allgon System which develops and markets base station equipment, antennas and repeaters; and Allgon Terminalantennas which supplies antennas to hand portable telephone manufacturers world wide. All three business areas work under a high degree of autonomy with organizational flexibility allowing them to better focus on their specific market segments.
The mobile telephony market continued its strong growth in 1995 and the number of subscribers rose by approx 30 million to 85 million. Sales for the Allgon Group companies increased by 28 per cent from GBP 88 million (MSEK 916) in 1994 to MGBP 112,2 (MSEK1.175 in 1995. Order’s grew by 10 per cent from GBP 96.4 million (MSEK 1.004) to GBP 114.1 million (MSEK 1.185). European sales were strong on a market which saw about 8 million new subscribers entering the various




networks. Growth on the North American market was weaker than expected due to the uncertainty of future system options in higher frequency bands. The weak dollar had a considerable negative impact on earnings. The strongest growth came from the Far Eastern market where the number of subscribers doubled to 22 million. Allgon currently has 672 employees, an increase of 57 since 1994.
Allgon AB ’s intensive R & D programmes will continue to centre around creating new digital products. The far-reaching training programme initiated by the company last year has secured the necessary competence required to keep pace with advances within all areas of cellular telephony. More than 15 per cent of the company’s staff are currently engaged in development projects. New logistics and supply routines were introduced in 1995 to keep pace with the explosive demand for Allgon cellular telephony equipment.


For further information see attached list of contact addresses:


ALLGON LIST OF CONTACTS

Allgon System AB
Henrik Huss, General Manager System Repeater Equipment
Lars Berglund, General Manager, Base Station Antennas
Lars Dousa, General Manager, Base Station Equipment
Box 541
183 25 Täby
SWEDEN
Tel: +46 8 540 822 00
Fax: +46 8 540 823 54

Allgon TA AB
Gunnar Forsblad, Marketing Manager
Box 555
184 25 Åkersberga
SWEDEN
Tel: +46 8 540 822 00
Fax: +46 8 540 824 80

Allgon Mobile AB
Teija-Marie Pierre, Market Communications Manager
Dennis Mellin, International Sales Director
John Grankvist, Deputy International Sales Director
and responsible for the U.S
Box 500
184 25 Åkersberga
SWEDEN
Tel: +46 8 540 822 00
Fax: +46 8 540 824 90

Allgon GmbH
Marie-Louise Mertig
Postfach 200, Gewerbe Park
21438 Brackel
GERMANY
Tel: +49 4185 5850
Fax: +49 4185585209

Allgon Ltd
John Lovelock
Unit 11, The Courtyard
Whitwick Business Park Stenson Rd
Coalville
Leicestershire, LE67 3JP
GREAT BRITAIN
Tel: +44 1530 510 013
Fax: +44 1530 510 373

Allgon S.A.R.L
Carole Lecarpentier
1 Place de Turenne
Zac Pirelli
94410 St Maurice
FRANCE
Tel: +33 1 48 86 59 59
Fax: +33 1 48 86 56 68

Allgon Ges.m.b.H
Frau Kopetzki
Siebenbrunnengasse 28
1050 Vienna
AUSTRIA
Tel: +43 2 22560505
Fax: +43 2 22560506


Allgon Basati Telekomünikasyon
Ferda Yildez
San.VE Tic AS
Atatürk Bulvari No 53/6
06410 Sihhiye-Ankara
TURKEY
Tel: +90 4 434 3403
Fax: +90 4 434 4081



Allgon Representative Office Singapore
Mika Nylund
21 Siak Kew Ave
SINGAPORE 1334
Tel: +65 383 6024
Fax: +65 383 6067