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Build your own intercom or walkie talkie out of two old cordless phones

Step 4Testing

Testing
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  • Coupler_(17).jpg
  • Coupler_(18).jpg
Quick test, leave it open Plug two phones into both ends of the coupler put in the 9 volt battery and talk. You may use two old wall phones with no problems. If you use cordless you need to make sure you have power going to them before they will work.

If they work Seal the expose wire with black tape. Dremel out a little slit into one of the sides. This will be where the 9 volt connector wires will exit the coupler. Close up the coupler, and be careful not to break any of the soldering you did earlier. Bring the leads of the 9 volt connector out of that slit. See photo.
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1 comment
Feb 14, 2012. 4:34 PMproject_builder says:
Is this wireless? I want to make one for my woods

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