Practical Guidance for RF Researchers - Experiment First, Interfere Never

The talk makes the case for RF experiments that are repeatable and never interfere with other users of the spectrum. Every transmission has neighbors, from aviation and weather radar to Wi-Fi, cellular, and amateur operators. The speaker offers a pre-flight checklist covering location, frequency, power, antenna, other users in the band, and transmit time, and urges experimenters to log those six fields on every run so results can be reproduced or defended.

The middle section argues that a working demo is not proof of good coexistence. A protocol can deliver every packet while leaking energy through spurious emissions, harmonics, adjacent-channel leakage, or heavy duty cycle. Cheap tools such as RTL-SDR, HackRF, TinySA, NanoVNA, a dummy load, and a GPS-disciplined oscillator can catch most of these errors. Common myths are debunked, including that lower receive gain cuts transmit power and that silence from complaints means no interference. Three scenarios follow: a LoRa sensor, a fully shielded GSM base station, and a vulnerability handled through coordinated disclosure.

The close covers when Part 5 experimental authorization applies, such as for novel or out-of-lab work, and notes that short trials may qualify for temporary authority. It also looks at growing spectrum demand from AI-managed sharing and satellite connectivity. The three takeaways are to think before transmitting, measure everything, and share results and interference reports.