Send/Capture Radio Wave signals with .NET

I have an idea that came to mind out of necessity and was wondering if it is possible to develop...

Clumsy as I am, I've lost my hear rate monitor watch (meaning I still have the strap to put around me, but I've lost the watch which shows you the heart rate, etc...)

Rather than buying a new set, I was wondering if it would be possible to develop an application in .NET that can communicate with the strap. (If it's possible I would like to create a mobile version of it, but I'd start using a standard .NET application).

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So basically my question is: Is there anyway to catch the signals (radio waves if I'm not mistaking) that are being sent out? I don't really care for possible further issues (encoding, etc, ...) I just want to check if I can communicate with the device somehow.

Edit: Do I need some sort of an antenna to connect to my pc? I suppose a smartphone can receive radio waves as it can tune in to the radio? I'm just guessing here.

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Receiving radio signals is a hardware function rather than software or language feature. If you search for radio tuner card for pc using your favorite search engine you will find a variety of cards and/or USB devices that will receive FM signals and allow your computer to play them for you. Some of these devices will likely have an API that you may leverage to get what you are after. Here is an example of a Media Card which would probably be suitable. (this is an example of what I think you are looking for, not an endorsement of the product)

After posting the answer I considered the link hard to read/notice so I am re-posting it more obviously:

http://www.microcenter.com/single_product_results.phtml?product_id=0335524