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WAVETEK Model 907 7 to 11 GHz Signal Generator

Bioeffects Seen

Authors not listed · 1980

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Laboratory equipment from 1980 generated the same microwave frequencies now flooding our environment through modern wireless technology.

Plain English Summary

Summary written for general audiences

This 1980 technical report documents the Wavetek Model 907 signal generator, a laboratory instrument designed to produce microwave frequencies between 7 and 11 GHz with pulse modulation capabilities. The device represents the type of high-frequency microwave equipment used in research and testing applications during the early development of microwave technology. While not a health study itself, such equipment was essential for conducting the controlled EMF exposure research that would later reveal health concerns.

Why This Matters

This technical documentation from 1980 represents a crucial piece of the EMF research puzzle. The Wavetek Model 907's 7-11 GHz frequency range sits squarely in the microwave spectrum that we now know can cause biological effects. What makes this particularly relevant today is that these frequencies overlap with modern wireless technologies - WiFi operates at 2.4 and 5 GHz, while some 5G applications use frequencies approaching this range.

The reality is that equipment like this Wavetek generator enabled the controlled laboratory studies that first demonstrated microwave radiation's ability to heat biological tissue and disrupt cellular processes. The pulse modulation capability mentioned in the keywords is especially significant, as pulsed EMF has been shown in numerous studies to be more biologically active than continuous wave radiation. Today's wireless devices predominantly use pulsed signals, making this historical equipment documentation a window into the tools that helped establish our early understanding of microwave bioeffects.

Exposure Information

Specific exposure levels were not quantified in this study.

Cite This Study
Unknown (1980). WAVETEK Model 907 7 to 11 GHz Signal Generator.
Show BibTeX
@article{wavetek_model_907_7_to_11_ghz_signal_generator_g5718,
  author = {Unknown},
  title = {WAVETEK Model 907 7 to 11 GHz Signal Generator},
  year = {1980},
  
  
}

Quick Questions About This Study

The Wavetek Model 907 signal generator produced microwave frequencies between 7 and 11 GHz. This range is significantly higher than most consumer wireless devices today, which typically operate between 0.7 and 6 GHz.
These frequencies are higher than current WiFi (2.4-5 GHz) and most cellular bands, but some 5G millimeter wave applications approach this range. The biological effects principles discovered at these frequencies apply to lower frequencies too.
Pulse modulation turns the microwave signal on and off rapidly, creating bursts of energy rather than continuous waves. Research shows pulsed EMF can be more biologically active than continuous radiation.
Controlled signal generators allowed researchers to study specific frequencies and power levels systematically. This precision was essential for establishing dose-response relationships and identifying which EMF characteristics cause biological effects.
Equipment like the Wavetek 907 enabled the foundational research showing microwave radiation's biological effects. The same physical principles apply to today's wireless devices, just at different frequencies and power levels.