FLEXI-M4-915

Antennas RF Overview

The FLEXI-M4-915 is a passive indoor antenna manufactured by RF Solutions, designed for operation at a center frequency of 915 MHz. It features a flexible 1/4 wave whip design with an impedance of 50 Ohms and a physical length of 66 mm. The unit utilizes M4 fixing for secure installation. This ready-to-operate component requires no tuning and supports protocols including LoRaWAN, Sigfox, NB-IoT, LTE, and 802.15.4.

Antennas RF Feature Summary

• Flexible 1/4 wave whip design for general low power radio applications
• M4 screw-mount fixing mechanism for stable installation
• Ready-to-operate configuration requiring no tuning
• Optimized range and reliability for indoor environments

Antennas RF Applications

• General Low Power Radio systems
• Machine to Machine (M2M) communication
• Telemetry data transmission

Antennas RF Procurement Notes

Verify the specific mounting requirements for the M4 fixing interface against the target enclosure design. Confirm that the 915 MHz center frequency aligns with the regulatory bands permitted in the deployment region. Ensure the 50 Ohm impedance matches the connected transceiver or cable system to maintain signal integrity without additional matching components.

Antennas RF Selection Notes

Select this model when a fixed, non-SMA connection is required for 915 MHz ISM band operations. The M4 fixing option distinguishes it from the FLEXI-SMA-915 variant, which uses an SMA connector. Consider the 66 mm length for spatial constraints within the application housing. This passive antenna is suitable for indoor deployments where flexibility and direct mounting are prioritized over external connector versatility.

Antennas RF Part Context

This component belongs to the RF Solutions Flexi series of antennas, specifically tailored for ISM, UHF, and VHF applications. It complements other variants like the FLEXI-SMA-915 by offering a different mechanical attachment method while maintaining similar electrical performance characteristics for the 915 MHz frequency band.

Antennas RF Replacement Considerations

The FLEXI-SMA-915 serves as a functional alternative if an SMA connector interface is preferred over the M4 screw-mount. Both share the same 915 MHz frequency, 50 Ohm impedance, and flexible whip design.