Electrocardiography by Do-It-Yourself Radiotelemetry

RADIOTELEMETRY for biomedical monitoring has become a frequently used research tool; however, its high cost has kept it from being universally accepted. A low-cost radiotelemetry system would probably find wide acceptance for clinical and laboratory use by persons with low research budgets. Unfortunately, most commercially available radiotelemetry systems are highly sophisticated and range in price from $500 to $1,500 per channel.1 The price is high because these systems are FM-FM multiple channel and very complex.2 This paper describes a simple one-channel electrocardiogram radiotelemetry system that can be built by any interested person in four hours for under $15.Materials and . . .