Development of Rad Haz suit and RF measuring techniques, SF-013-15-04
Rutkowski A, Christianson C · 1965
Military researchers developed RF radiation protective suits in 1965, showing early recognition of RF health hazards.
Plain English Summary
This 1965 technical report documented the development of protective suits designed to shield against radiofrequency radiation hazards, along with techniques for measuring RF exposure levels. The research focused on creating practical safety equipment and measurement protocols for workers exposed to RF radiation in military and industrial settings.
Why This Matters
This report represents early recognition that RF radiation posed occupational hazards serious enough to warrant protective equipment development. In 1965, researchers were already developing specialized suits and measurement techniques to protect workers from RF exposure, decades before widespread public concern about cell phones and WiFi. The science demonstrates that concerns about RF radiation aren't new or unfounded. What this means for you is that protective measures against RF radiation have been considered necessary by researchers and military personnel for over half a century. Today's ubiquitous wireless devices expose us to similar RF frequencies, yet most people take no protective measures whatsoever. The reality is that if military researchers deemed RF protection essential in 1965, perhaps we should reconsider our casual acceptance of constant RF exposure in modern life.
Finding
The silverized nylon "lino" material used in the suit withstood laundering, dry cleaning, weathering, abrasion and open sea environments without degradation of rf attenuation, Properties. 'The. suit provided a minimum of 25db attenuation for low-power fields at 5,.2kme (mininum of 30db at 425Mc) and better than 20db for high-power fields (BMEWS £ frequency, 200mw/sq. cm power density).
In their words
“The silverized nylon "lino" material used in the suit withstood laundering, dry cleaning, weathering, abrasion and open sea environments without degradation of rf attenuation, Properties. 'The. suit provided a minimum of 25db attenuation for low-power fields at 5,.2kme (mininum of 30db at 425Mc) and better than 20db for high-power fields (BMEWS £ frequency, 200mw/sq. cm power density).”
Exposure Information
Specific exposure levels were not quantified in this study.
Study Details
The objectives of this task are to develop facilities, instrumentation, techniques, procedures and specifications for measurements on RF shielding materials; utilize these measurements in the development of RF protective devices (a RAD HAZ Suit in this phase of the task); and, evaluate the devices in the field, using high-powered RF equipment.
Laboratory microwave power source consisting of a 0.25 megawatt modulator energizing a pulse-operate...
The silverized nylon 'lino' material used in the suit withstood laundering, dry cleaning, weathering...
A prototype RAD HAZ suit has been developed through the joint efforts of NSRDF and NAVAPLSCIENLAB. The suit provided a minimum of 25 db attenuation for low-power laboratory RF fields at 5.2 Kmc (minimum of 30 db at 425 Mc) and better than 20 db for high-power fields (BMEWS frequency, 200 mw/sq. cm power density). Resistance of the material to salt spray and arc-over was poor and is expected to be improved by the use of a coating and an over-garment. The suit was evaluated in field conditions at BMEWS frequency and 5.2 Kmc with power densities up to 100 mw/cm2 and 200 mw/cm2 respectively, showing good performance with no meter deflection or visible arcing in the Ramcor 1200 densiometer tests.
Show BibTeX
@article{development_of_rad_haz_suit_and_rf_measuring_techniques_sf_013_15_04_g4966,
author = {Rutkowski A and Christianson C},
title = {Development of Rad Haz suit and RF measuring techniques, SF-013-15-04},
year = {1965},
}