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The goal of the Contrails project is to help preserve and disseminate the technical record of 20th century aerospace research, highlighting in particular the research endeavors of the Illinois Tech community.

Endoradiosondes: A State of the Art Survey

Report Number: AMRL TDR 62-122
Author(s): Michael McCally; George W. Barnard
Corporate Author: Aerospace Medical Research Laboratories
Laboratory: Aerospace Medical Research Laboratories
Date of Publication: 1962-12
Pages: 9
Contract: Laboratory Research - No Contract
Project: 7222
Task: 722201
AD Number: AD0298936

Abstract:
Within the last 5 years endoradiosondes or "radio pills," have been developmed employing tiny transducers and trasmitters which can be swallowed or implanted in man and animals. The present state of the art of these instruments, including design, construction, uses, advantages, and limitations, is reviewed. The literature in this area to date consists largely of suggestions for design principles and considerations in circuitry. There is only the barest amount of useful data on equipment performance, reliability, response linearity, frequency response characteristics, and correlation with proven systems. The endoradiosonde promises to be a useful technique in physiological instrumentation, but much basic development remains to be done before this tool can be useful to any but the bioelectronic specialist.

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