Ive been the proud owner of a HRM Dual for all of one week, and couldn’t get HR transmitting into TR on my…second use.
Why do I think buying more kit will make things simpler/easier?
HRM showed paired on the iPhone settings, shows paired in TR, displayed an unchanging 77 bpm.
Paired it to Garmin edge as well…failed to pair.
Unpaired in TR, repaired, no change.
Turned off Bluetooth on iPhone…paired automatically to Edge. Displayed HR on Edge.
Turned on Bluetooth on iPhone, paired to iPhone…stops displaying on Edge.
And so on. In the end I recorded in TR without HR and on the edge with HR.
It seems like a Bluetooth issue, but the whole point of the Dual is to be able to pair with two devices on Bluetooth. The Garmin can use ant+ anyway…except it isn’t.