Fixing a Car Alarm Remote Antenna.
by Mjtrinihobby in Circuits > Electronics
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Fixing a Car Alarm Remote Antenna.
Here is my viper remote. It's old and the original antenna was damaged and replaced by a simple wire. The range with the wire is limited to about 80ft line of sight.
I wanted to replace this wire with an antenna suitable for the 433mhz frequency the remote uses.
I wanted to replace this wire with an antenna suitable for the 433mhz frequency the remote uses.
Opening the Remote.
Getting open this old 2 way remote was easy. Now I have access to the circuitry.
The Rf Board.
This rf board slots into the bigger board that contains the lcd display. You can see the antenna connection.
The Replacement Antenna.
Here it is. Nothing fancy but a spring of correct length for the frequency band. Using my Tools I bent the end out to allow soldering onto the circuit board.
Connection of the New Antenna.
Quick easy solder and the antenna is now on the board.
Reassembly!
Using a plastic cable Tie, my old remote is reassembled. Now my range is around 800ft line of sight and I'm very happy.
Not bad for a 10 minutes job eh?
Update:
I made the antenna pretty afterwards in this instructable;