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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Transmitter/receiver radio project

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TR

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I am looking for a good tx/rx voice activated radio design.
Needs to operate on batteries (portable). Needs a 2 km range or so.
I want to install on snowmobile helmits.
I can purchase the retail units at a nice high price but that takes all the fun of building your own. Can anyone direct me to plans or a kit? :)
 
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