I do remember a little about the radios they used on the series. The "Orange Box duplex paramedic radio was the original Motorola adventure into the medical telemetry function. It consisted of (all inside the orange box case) an HT220 used as an exciter, and a PA out of a micor mobile low power unit and a duplexer from a mobile phone (I think from a Mocom 70 series radio). The receiver was straight out of the micor also. It had a "limited production" VCO that is fed from a differential amplifier that amplifies the typical 50mv signal retreived from the skin surface from heart activity and the amplified voltage feeds the variable VCO which modulates the EKG signal acrosss the air. It also has what we called "micky mouse mux" so that the audio from the ekg and from the voice were transmitted simultaniously and separated at the ekg console at the hospital to give both ekg and duplex voice simultaniously. It was an interesting radio and it worked fairly well. The next version was the APCOR series, but that is another story.
The portables they used started out as HT200 radios with the telescoping antenna which were accurate at one time for LA County FD. I also saw an HT220 on a later show. I never saw an MT500 that I recall. It was mostly older equipment they used. The Defib was a PhysioControl Lifepack 3 if I remember correctly. They were big and heavy, but they did get the job done. I don't remember the mobile radio. I would have to watch an episode to know the mobile radio. It was probably a Mocom 70, but I won't bet on it. So - that's what I remember. Doug Seattle now Florida back then EMT for 29 years
