UHF Radio // KAR Modem
Providing reliable private data communication links to several services.
iQ-S4 OA KAR Modem
The iQ-S4 OA is the next generation solution for data communications in traffic applications. It complies with the requirements of the Dutch KAR* (Korte Afstand Radio) specification for Public Transportation data communications. It provides a reliable private data communication links to several services.
The basic applications include traffic light priority requests, the display of real-time information on anticipated arrival times at bus stops, vehicle tracking and communication with the central transportation control computer.
The equipment complies with the following international standards:
EN 300 113-2 Annex A, EN 301 489-1,-5, EN 60950-1 and FCC CFR47 Part 90.
Frequency | 403 … 473 MHz |
Channel Width | 12.5 kHz/25 kHz (software selectable) |
Tuning Range | 70 MHz |
Frequency Control | Synthesized 6.25 kHz tuning resolution |
Modulation | OA |
Carrier Power | 0.02, 0.05, 0.1, 0.2, 0.5, 1 W programmable |
DATA MODEM
Interface | RS-232, optional Bluetooth and UDP |
Interface connector | DB9, female, RJ45 Female (optional) |
Data speed of serial interface | 1200-115200 bps |
Data speed of radio interface | 9600, 14400, 19200, 28800 bps |
Data format | Asynchronous data |
Air interface encryption | AES128 (optional) |
GENERAL
Input Voltage | 9-30 Vdc / 1A |
Power Consumption | Typical 0.8 W (receive) 4.7 W (transmit 1W) |
Temperature Range | -25 °C … +55 °C |
Antenna connector | TNC, 50 ohm, female |
Construction | Diecast aluminium alloy |
Size HxWxD mm | 115 x 64 x 31 mm |
Weight | 250 g |
iQ Radio
The iQ Radio has built a modular telemetry platform. Manufactured to compliment your application. Based on past experience as well as future requirements we listen to customer requirements in various markets to hear and learn about the wishes and demands. With our modular design and flexibility in using your desired interfaces we supply telemetry solutions ranging from UHF to Cellular up to Wi-Fi p, Wi-Fi and Bluetooth.
iQ-S4 OA
The iQ-S4 OA is the next generation solution for data communications in traffic applications. It complies with the requirements of the Dutch KAR* (Korte Afstand Radio) specification for Public Transportation data communications. It provides a reliable private data communication links to several services. The basic applications include traffic light priority requests, the display of real-time information on anticipated arrival times at bus stops, vehicle tracking and communication with the central transportation control computer. The equipment complies with the following international standards: EN 300 113-2 Annex A, EN 301 489-1,-5, EN 60950-1 and FCC CFR47 Part 90.
KORTE AFSTAND RADIO (KAR)
The KAR Specification defines how onboard computers can be used for various data communication applications within public transportation. It focuses mainly on systems and components used for a set of applications developed to enhance the control and flow of public transportation as well as information services to the public. The applications are based on a combination of up-to-date technologies, including onboard computers, GPS positioning, and short-range wireless communication with radio modems.

iQ-4025
Vandalism proof Antenna!
All of products are high-performance outdoor-deployable wireless bridge that provides wireless connectivity between multiple network locations. With the high throughput and long-distance transmission, it is the appropriate backhaul solution for Carriers, Service Providers and Enterprises.
Center Frequency | 430 MHz |
VSWR | ~1.3:1 |
Efficiency (%) | ~58.3 |
Peak Gain (dBi) | ~2.9 |
Impendance (Ohm) | 50 |
Polarisation | Linear |
Max. Input Power (W) | 50 |
Polarisation | Linear |
Radiation Pattern | Omni-Directional |
Operating temperature | -40 °C to +85 °C |
Storage temperature | -40 °C to +85 °C |
Substance Compliance | RoHS |
Certificates | IP67, IP69K, IK09 |
Dimensions | Ø 146 x 31.5 mm |
Certificates | IK09, IP67, IP69K |
Mounting | screw mount or adhesive mount |
Cable | Standard RG58, L: 4 meter by default. |
Connector | TNC Male |
• iQ-4025 Efficiency
• iQ-4025 Peak Gain
• iQ-4025 Return Loss
• iQ-4025 VSWR
• iQ-4025 Dimensions
• iQ-4025 Radiation Pattern
