Note: This study found no significant biological effects under its experimental conditions. We include all studies for scientific completeness.
Response of The Dog to 24,000 and 1285 MHz Microwave Exposure
No Effects Found
Sol M. Michaelson, Joe W. Howland, Wm. B. Deichmann · 1971
Dogs showed no health effects from microwave exposure 400-500 times stronger than cell phones, even after thousands of hours.
Plain English Summary
Summary written for general audiences
Researchers exposed dogs to high-intensity microwave radiation at two frequencies (24,000 MHz and 1,285 MHz) for extended periods - up to 2,631 hours over 20 months. Despite power levels 400-500 times higher than typical cell phone exposure, no significant health effects were observed in the animals.
Cite This Study
Sol M. Michaelson, Joe W. Howland, Wm. B. Deichmann (1971). Response of The Dog to 24,000 and 1285 MHz Microwave Exposure.
Show BibTeX
@article{response_of_the_dog_to_24_000_and_1285_mhz_microwave_exposure_g3738,
author = {Sol M. Michaelson and Joe W. Howland and Wm. B. Deichmann},
title = {Response of The Dog to 24,000 and 1285 MHz Microwave Exposure},
year = {1971},
}Quick Questions About This Study
The dogs were exposed to 20-24 mW/cm², which is approximately 400-500 times more powerful than typical cell phone radiation levels. This represents extremely high-intensity microwave exposure by today's standards.
Dogs received continuous 24,000 MHz exposure for a total of 2,631 hours spread over 20 months. The 1,285 MHz group was exposed 6 hours daily, 5 days per week for 4 weeks.
No significant radiation effects were observed in dogs exposed to either 24,000 MHz or 1,285 MHz microwaves, despite the extremely high power levels and extended exposure duration used in this study.
Yes, the 24,000 MHz (24 GHz) frequency tested is very close to some 5G millimeter wave frequencies, which typically operate between 24-28 GHz in many deployment scenarios.
This early study tested frequencies similar to modern 5G and used power levels hundreds of times higher than consumer devices, providing baseline data for understanding chronic exposure effects at extreme intensities.