This page is a condensed excerpt from the ISM and unlicensed signal reference issued to students in Yankee Actual's EW operations training programs. The complete reference catalogs Wi-Fi generations, Bluetooth, IoT mesh, LPWAN, RFID, UWB, and the short-range device zoo with PHY, access, and power-limit detail.
| System / Examples | Category | Band / Frequency | Role |
|---|---|---|---|
| Representative Emitter Classes — Sample Only | |||
Wi-Fi 4 / 5 / 6E / 7 IEEE 802.11 family |
WLAN | 2.4 / 5 / 6 GHz | The dominant unlicensed OFDM family — through 320 MHz channels |
Bluetooth / BLE Classic FHSS and Low Energy |
PAN | 2.4 GHz | 1600 hop/s FHSS and advertising channels tucked between Wi-Fi carriers |
IoT mesh Zigbee · Thread · Z-Wave · Wi-SUN |
MESH | 2.4 GHz / sub-GHz | Home-automation and utility mesh traffic |
LPWAN LoRa · Sigfox · Sidewalk |
LPWAN | 902–928 MHz | Chirp spread spectrum and ultra-narrowband long-range links |
RFID / NFC LF · HF · UHF backscatter |
RFID | 125 kHz – 928 MHz | Strong reader emissions, faint backscatter replies |
Short-range devices Key fobs · TPMS · FPV video |
SRD | 315 / 433 MHz · 5.8 GHz | The everyday OOK/FSK burst environment every survey encounters |
