Product Catalogue : 18 March 2020

Table of Contents

About Us / Certified Quality

Our Products

● SMART Antennas - Mission Adaptive Antennas● Vehicle Antennas● Accessories

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About Us

COJOT has over 30 years of experience in developing and manufacturing wideband antennas for Tactical Communications, Electronic Countermeasure (ECM)and Monitoring applications. More than 90 percent of our production is exported for use worldwide – serving the defense and public safety markets.

Based in Finland, COJOT is recognized as a pioneer and leading manufacturer of innovative wideband antennas for portable, vehicle and fixed-siteapplications, covering VHF, UHF and SHF bands.

Since April 2016, COJOT has been part of Alaris Holdings, a South African technology holding company listed on the JSE AltX. As part of the Alaris group COJOT isable to call on a broad range of antenna types from its sister companies Alaris Antennas and mWave Industries;

● Alaris Antennas (Head office in Centurion, South Africa) – expertise in products including Direction Finding (DF), Monitoring, Communication, Log PeriodicDipole Arrays (LPDA), Masts and supporting RF Electronics.

● mWave Industries (based in Windham, Maine, USA) – a leading global provider of innovative custom and Commercial microwave antenna solutions withspecial focus on 40 – 110GHz.

We take pride in our values of pursuit of customer satisfaction, integrity, excellence and commitment and it is our aim to provide the perfect equipment toimprove our customers’ radio coverage, connectivity and competitiveness.

Certified Quality

Each manufactured antenna undergoes a performance acceptance testbefore shipment to the customer. COJOT has ISO9001:2015 certification.Our technically skilled engineers, R&D laboratory, advanced simulationtools and our own test facilities, including a fully anechoic chamber and anopen-air measurement track, combined with an extended network ofexternal test facilities ensure that each product complies with the requiredspecifications and quality.

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Comprehensive range of wideband antennas

Our key products are centered on Tactical Communications, ECM and Monitoring applications. Supported by our many years of experience, we provide a broadrange of sophisticated wideband antennas and accessories covering the 20–6000 MHz frequency range.

When solid coverage in RF systems is crucial, COJOT has the answer

Mission Adaptive Antennas

Vehicle Antennas

Accessories

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SMART Antennas - Mission Adaptive Antennas

COJOT Mission Adaptive Antennas are matched based on controlled band switching, where the frequency band is split into smaller slots and each slot ismatched separately. The RF signal is connected through the most optimal matching circuit using RF switches and fast control logic. This switching technologyis compatible with frequency hopping. The active matching is controlled by the radio or autonomously by the antenna. The control signal and supply voltageare fed to the antenna through the antenna connector or through a separate data connector.

Advantages over passively matched antennas: 

● Better link budget● Improved radio coverage● Extended communication range● Higher interference rejection● Lower power consumption● Smaller visual signature

If you can’t find the right antenna to your RF system needs, then please feel free to get in contact with us.

Code Description Power FreqMin (Mhz)

FreqMax (Mhz)

ATA3090M Autonomous tunable vehicle VHF antenna 50 30 90

Autonomous Tunable Vehicular VHF AntennaATA3090M

The ATA3090M is an autonomous tunable antenna for the 30 to 90 MHz frequency band that does not require any external control. It therefore offers a perfect solution to easily enhance existing radio systems.

This low profile antenna tunes automatically to use the optimum matching circuitry at the required frequency. The ATA3090M provides superior gain performance over traditional wideband antennas.

• No external control required - Easy upgrade for current radio systems

• Low profile antenna with superior gain performance - Gives up to 6dB better gain compared to a traditional passively matched antenna of same size

• Easy installation – Mechanically compatible with NATO / US pattern mounts

• Link budget improvement – Better gain and signal-to-noise ratio

Product details*

Frequency range 30 - 90 MHz

Matching PIN diode based active matching

Polarization Nominally vertical

Antenna type Monopole (ground plane required)

Radiation pattern Omnidirectional

Gain Measured patterns on request

VSWR 3.5 (on tuned band)

Nominal Impedance 50 Ω

Power rating 50 W

Power supply 24 VDC, 5 W (average)

Tuning speed Max. < 150 µs, average < 50 µs (more details on request)

Standard color Black

Radiator Steel whip with shock absorption spring

Height 2000 mm

Weight 3.0 kg

Installation*

RF connection Female N-type connector

Power supply Via 2-pin DC connector (C90-3102R10SL-4P)

Mounting 4 hole NATO / US pattern mount

* Specific adjustments on request

Order number

ATA3090M Antenna as described above

TA3090M Antenna with external control

(see separate data sheet)V0.3wDate 29.03.2017 Page 1/1

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Vehicle Antennas

COJOT wideband vehicle antennas for the range from 20 – 6000 MHz are a crucial element of today’s demanding RF systems that are used in tacticalcommunication, electronic countermeasure (ECM) and spectrum monitoring applications. Due to their ruggedized nature COJOT vehicle antennas are an idealchoice for installations on all kind of vehicles as well as for fixed installations like on masts, shelters or containers.

We provide dipole and monopole type antennas at power levels from 20 – 400 W. Our highly reliable low- and high-gain antennas feature NATO / US patterncompatible mountings as well as magnetic mounting solutions for temporary installations, making them perfect for the latest RF systems used in e.g. C3I, EW,EOD, VIP and convoy protection applications.

Our broad set of vehicle wide- and narrowband antennas is complemented by a wide selection of accessories including special mounting solutions, a whip tiltadapter, filters and power dividers. In addition, we are able to access the comprehensive portfolio of our sister company Alaris Antennas, with specificexpertise in numerous product types, like Direction Finding (DF), Monitoring, Communication and Log Periodic Dipole Arrays (LPDA).

When solid coverage in RF systems is crucial, COJOT has the answer.

If you can’t find the right antenna to your RF system needs, then please feel free to get in contact with us.

Code Description Power FreqMin (Mhz)

FreqMax (Mhz)

ATA3090M Autonomous tunable vehicle VHF antenna 50 30 90

Autonomous Tunable Vehicular VHF AntennaATA3090M

The ATA3090M is an autonomous tunable antenna for the 30 to 90 MHz frequency band that does not require any external control. It therefore offers a perfect solution to easily enhance existing radio systems.

This low profile antenna tunes automatically to use the optimum matching circuitry at the required frequency. The ATA3090M provides superior gain performance over traditional wideband antennas.

• No external control required - Easy upgrade for current radio systems

• Low profile antenna with superior gain performance - Gives up to 6dB better gain compared to a traditional passively matched antenna of same size

• Easy installation – Mechanically compatible with NATO / US pattern mounts

• Link budget improvement – Better gain and signal-to-noise ratio

Product details*

Frequency range 30 - 90 MHz

Matching PIN diode based active matching

Polarization Nominally vertical

Antenna type Monopole (ground plane required)

Radiation pattern Omnidirectional

Gain Measured patterns on request

VSWR 3.5 (on tuned band)

Nominal Impedance 50 Ω

Power rating 50 W

Power supply 24 VDC, 5 W (average)

Tuning speed Max. < 150 µs, average < 50 µs (more details on request)

Standard color Black

Radiator Steel whip with shock absorption spring

Height 2000 mm

Weight 3.0 kg

Installation*

RF connection Female N-type connector

Power supply Via 2-pin DC connector (C90-3102R10SL-4P)

Mounting 4 hole NATO / US pattern mount

* Specific adjustments on request

Order number

ATA3090M Antenna as described above

TA3090M Antenna with external control

(see separate data sheet)V0.3wDate 29.03.2017 Page 1/1

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Accessories

For our broad range of wideband vehicle, portable and fixed-site antennas we have a good selection of antenna accessories available, including specialmounting solutions, like brackets and magnetic mounts, a whip tilt adapter, filters, power dividers and many more.

If you can’t find what you are looking for, then please feel free to get in contact with us.

Code Description Power FreqMin (Mhz)

FreqMax (Mhz)

AB3090 Mountingbracket Professional mounting bracket for vehicle type antennas - 0 0

Product as described aboveProductNSN

4-bolt US patternAntenna mount

160 mmDepth2.15 kgWeight

158 mmHeightUtility steelMaterial

*Specific adjustments on request

5985 - 58 - 000 - 1023AB3090

Front panel of the bracket removable

Order number

1 (through the back panel)RF cable routing holesInstallation*

156 mmWidth

Olive greenStandard colorProduct details*

Antenna mounting bracketAB3090

• Rugged and compact bracket construction

• Easy installation through removable front panel

The AB3090 antenna bracket is a professional mounting solution for installations where a direct mounting of the antenna onto the vehicle is not possible.

Drilling diagram of the back panel of the bracket:

V1.4Date 30.10.2009 Page 1/1

111

112

22O

156

158

8,5O

27

25

22

78

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Contact Us

COJOT’s expertise and experience make us a trusted supplier for mobile and fixed wideband antennas. COJOT, in co-operation with sister companies AlarisAntennas and mWave Industries, ensures that the communication and protection requirements of tomorrow are met today.

We would be glad to discuss your antenna requirements and work in partnership with you to select the best possible solution – contact us today!

Alaris Antennas, with its head office in CenturionSouth Africa, designs, manufactures and sellsspecialised broadband antennas and other relatedradio frequency products from 9kHz to 9 GHz. Itsproducts are used in the communication,frequency spectrum monitoring, test andmeasurement, electronic warfare and otherspecialised markets.

mWave Industries, based in Windham, Maine, USA,is a global leader in innovative custom andcommercial terrestrial microwave antennasolutions ranging from 100 MHz to 110 GHz with aspecial focus on 40 — 110 GHz millimeter wave.mWAVE's antenna brands include the industryleading Gabriel and Mark microwave antenna lines.

COMMUNICATIONS

Omni-directional anddirectional

communicationsantennas

DIRECTION FINDING

Direction Finding andspectrum monitoring

JAMMING

Stand-off Jamming

MONITORING

Signal detection and ITUapplications

COUNTER-RCIED

Manpack andvehicle-mounted

jamming equipment

MILLIMETER-WAVE

mWAVE40 — 110 GHz, 0.3 — 1.2 mHigh Performance direct

connect antennas

STANDARD-HIGHPERFORMANCE

Gabriel900MHz — 13 GHz

Standard and HighPerformance antennas

PARABOLIC GRIDS

Mark300MHz — 2.700 GHzRugged light-weight

Parabolic Grid antennas

TELEMETRY

mWAVE CustomTri-band

L/S/C-bandTelemetry antennas

PERFORATEDPARABOLIC

mWAVE Custom698 — 5GHzLight weight

mobile/fixed Perforatedantennas

COJOT OYP.O Box 5902271 Espoo, Finland

Tel: +358 9 452 2334    |    Fax: +358 9 452 3696Email: contact@cojot.comwww.cojot.com

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