RF Reference

ISM Bands Guide

Overview of common ISM bands such as 433 MHz, 868 MHz, 915 MHz, 2.4 GHz and 5.8 GHz.

Overview

Overview of common ISM bands such as 433 MHz, 868 MHz, 915 MHz, 2.4 GHz and 5.8 GHz.

Practical reference

  • Check the correct frequency band before choosing an antenna.
  • Use antennas, connectors and cables rated for the operating frequency.
  • Verify regional RF regulations before shipping a product.
  • Test the final enclosure and installation position.

Engineering notes

RF performance depends on frequency, antenna size, cable loss, connector quality, ground plane, enclosure design and installation environment.

People also ask

Can one antenna work on every RF band?

No. Antennas should match the operating frequency band.

Do RF regulations matter?

Yes. Allowed power, bands and duty cycle depend on region.