If it is not interfering with cell phones what frequency does it use. I tend to think they use 900Mhz, in that case there should be some interference. Also I have heard a lot about them interfering with medical implants, is there any proof of that?
Charita, it is definitely NOT 900 Mhz.
Just go to soundcastsystems.com ... put the www in front of that of course (sorry could not get link to work).
Anyway, go there and click on the "technology" tab. It will give you the down and dirty.
Here is a synopsis of some of that:
Soundcast uses Frequency hopping spread spectrum (FHSS) technology in which the transmitter constantly and automatically searches for open channels in the 2.4 GHz band and jumps to them to avoid interference with other products, such as cordless telephones, radio controlled toys, cell phones, microwave ovens, remots, and wireless routers.
If you want to get really technical, look at the bottom of the front page of the "technology tab", go to the far right icon with your mouse and it will say "Technical Specs". Click that and it will give you all the real engineer type data. Some of which I copy here:
Data rate: 1.536 Mbps
Modulation: Frequency Hopping; FSK digital radio
Co-existence: Impervious to 802.11, microwave oven, both DSSS and FHSS cordless phones, and bluetooth devices.
Operating Frequency: 2400 - 2483 MHz
Channel width: 2.0 MHz
Anyway, I have no idea if it affects medical devices. We don't have any of those. But I highly doubt it, or their FCC registration and paperwork they send with product would have to state such a danger existed. But, like I think I mentioned in my review, just call the folks at SoundCast. I called them with a couple of questions about the waterproofing, etc. and they were very kind. Or e-mail the question. Here is the contact info from their website:
phone: toll free 1-800-722-1293
You can e-mail them thru their website. Just click on the "contact" page on their homepage, then type in your message and submit it. I did that and got an answer within 24 hours on my question.
Good luck with your decision.
Jeff