Quote Originally Posted by Fredwina View Post
Yes, that could happen with a non-coded Transmitter, like the F4 has. The coded ones supposedly ellminate the problem.
Yes, I have a coded Polar HRM (Model #S210), and it is great if you are riding next to others, so you don't pick up each other's readings. I really like this model, though it is a bit more complex than I need most of the time (lap timers and the like). All I really use is the average HR, max HR, time in each zone, and calories burned. It has always worked flawlessly for riding or hiking (I've had it for at least 1.5 years), and I too just tuck the strap under the band of my sports bra.

Highly recommended!

Emily