0 Replies Latest reply on Oct 14, 2018 2:27 PM by korn

    More Medical Oddballs, the Home Diathermy Machine

    korn

      This is an oddball I wish I still had. I lost it when I moved in 1977. Not for any Medical use but because it would make a great short wave transmitter.... Just needs a modulator...

       

      It was a large beast with two banana jacks on the front panel. There was a timer, plate current meter and a tuning knob. It had some different sized pads you were instructed to place above and below the affected limb. There were some picture of them on a persons arm and thigh.

       

      I remember it had a huge tank coil suspended between two 811 tubes. Thats alone was frightening. I could easily get a few hundred watts of RF out of one of those tubes but to have a pair of them... I saw an Ameritron 811A amplifier at a recent hamfest and that reminded me of this monsters potential.

       

      On the first power up test it crackled a bit so I quickly shut it off. then I shut the overhead fluorescent lights so I could  see if there was any arcing. As soon as I powered it up the lights came back on.....

       

      I figured it needed a load So I hooked up the large pad set and searched for a test subject. All I could find were some cold McDonalds fries so why not. I nestled the fry container between the pads and fired it up again. I tweaked the plate cap and then I heard my fried say "Its smoking" I looked all over but didn't see smoke. It was the fries! There was steam coming out from between the pads...

       

      Still cant believe this was actually marketed to home users. I've worked in many hospitals and serviced all kinds of medical equipment. Never did any of it scare me like these monsters did....

       

      Anybody else have experience with these machines?