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Thread: HRM Issue

  1. #1
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    HRM Issue

    Sometime my HRM works great, but other times it goes completley out of wack, saying that my heart rate is over 200BPM and I can guarantee it wasn't 200. What throws off HRM? Is there anything specific I should do in order to get an accurate reading? It's an Axiom 306.

    Thanks!
    James

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    Because I thought I could ks1g's Avatar
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    When it goes bonkers, are you near/underneath power lines? Analog HRMs are especially susceptible, but even my digital-coded Polar 720 wiggs out sometimes at one particular spot on my regular rides.

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    Senior Member donrhummy's Avatar
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    ^^ +1

    If you're going near anything electrical, it can throw it out of whack. There's a section I bike near that always makes it go over 240.

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    Senior Member CherryBomb's Avatar
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    This, from the Polar website:

    Please note: Static electricity in clothing or a flapping shirt can cause electrical interference, so some items of clothing, i.e. man-made fibers, can also be the cause. Please try wetting the t-shirt in the area where the transmitter is.


    This used to drive me nuts, now I make sure that jerseys are washed with fabric softener and hung to dry, never tossed into the dryer.

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    Guinea Hood Ostuni's Avatar
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    another possible cause: when i ride by a hospital in my area the hrm goes wacko... no high voltage lines i can see, but something from that hospital is putting out a powerful pulse of some kind....?
    Tom Hagen: 'Thank you for the dinner and a very pleasant evening. If your car could take me to the airport - Mr. Corleone is a man who insists on hearing bad news immediately.'

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    Hypoxic Member head_wind's Avatar
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    When I used my Polar or Sigma Sport (which I think is compatible with
    the Polar) the electrical noise in the gym I use interferes. Now that
    I use Garmin I am OK in the gym.

  7. #7
    bac
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    Yup. As already mentioned - don't worry about it, James. It's just some interference. I've found power lines to be the biggest issue also.

    ... Brad

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