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I need to repeat radio frequency in the 402MHz range. Answered

I need to repeat radio frequency in the 402MHz range. 

How do you build a RF repeater?

I need to extend the range of a CGM (Continuous Glucose Monitor). It uses the MICS protocol. 

Can you adapt an existing device?

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caitlinsdad
caitlinsdad

7 years ago

That being a medical device, I would think that would operate on a reserved frequency range which would be pretty restrictive on what is on there so as to avoid interference or other "noise". Commercial repeater units are probably expensive, like ones tailored for repeating cell phone transmissions in dead spots. It will probably be difficult to find something DIY for your purpose and it would not be FCC approved for you to be tinkering in that frequency. Maybe there is some way to convert the receiver data to PC or something that can then be retransmitted over other means. Webcam on the data display or try to increase the effectiveness of the antenna on the receiver unit. Good luck.

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arourke1
arourke1

Reply 7 years ago

Converting the signal is not an option for this project. Improving the antenna will get me a little better reception, I don't know how much though or what works best and I don't want to go hacking into the receiver. Repeating a signal isn't really tinkering is it? How do you tune a repeater? Can I take the design of a WIFi repeater and convert it into a 402MHz (MICS) repeater?

Thanks for your input.

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caitlinsdad
caitlinsdad

Reply 7 years ago

Sorry, I only know how to tuna fish. Wifi repeating is more complex than it looks, part of the reason it doesn't work so well. They may also be locked into the hardware specific to the wifi bands.