So D and I traded transmitters yesterday.
Got to the gym, and walked. Nothing exciting. Started running, and my HR hung out at 161. D said his was 00. He did some stuff. I noticed my HR going to 165, 170, 172. Hooray, it is the transmitter. I was so excited. My 3 miles went pretty easily. The last .5 were the hardest, but I kept at it.
When D finished he told me his transmitter was working too. Since his HR never goes above 155, he said it read right and calculated his usual calories. Who knows?
I still think I'm buying another transmitter in a month.
And an interesting article on shoes/feet.