making cordless door intercom

[89c52]

Hi iam really interested in making a door intercom full deplux which works without cable.
i have developed a door intercom using 4 inch speaker at main gate with LM386 on the door side and KA2410 on the hand set side. This intercom works on 4 wires , and uses 18 volts.
Now how i can make it cordless. Any experince person out there..

 

[jeffmoss26]

im not sure exactly but my alarm system has a wireless link set up. they put a box on the door and a box on the wall. then the installer just hooked a transmitter up in the basement. jeff moss
jeffmoss26@adelphia.net

 

[Bobg1]

Your problem could end up being the power source.
You say right now you are using 18 volts. You will have to get it to work on maybe a 9 volt battery, and then you have to keep the power consumption low so the battery will last.

 

[executone]

You need a transmitter and reciver that will operate on 18 volts. Compare it to a walkie talkie or baby monitor type setup. They both operate at 9 volts, but some wireless survalance systems operate at 18 volts. They are both audio and video.
Good Luck!!