12VDC Control Unit with Keyfob Transmitter
I recently found myself in need of a 12VDC polarity reversing unit, to control the rotator that resides beneath the Max-Gain systems push up mast populated with antennas, that is temporarily mounted on the rear of my mobile when operating as a stationary mobile in the field.
Now I could have assembled something that would have sufficed using an RF electronic device and 12VDC relays that I had in my junk box, but while sourcing what was available in the marketplace, I discovered this device, and how cool is that.
It does exactly what I wanted it to do, and then I realized that there are many applications for it, including controlling the 10/80 meter HF gearmotor antenna that resides on my mobile as seen in the photo.
The keyfob transmitter has two buttons . The left button runs the motor in one direction and right button runs the motor in the opposite direction.
The control unit can be configured for either momentary or latching operation. In the momentary mode, the motor will operate as long as the buttons are held down. In the latching mode, pressing either button will start the motor and pressing the button a second time will stop the motor.
For my usage, and with the control unit programed for momentary operation, its as simple as connecting 12 volts +/- to the unit, and connecting up the two antenna gearmotor leads to the unit, and its done.
So if you need a compact 12VDC polarity reversing R.F remote control transmitter & receiver, designed for bi-directional control of DC motors, this is the device for you.
Frequency: 340 MHz.
Input voltage: 12VDC with reverse polarity protection.
The output relays are rated at 30A @12VDC.
Operating temperature range: 0° F to 160° F.
Receiver dimensions are approximately 2.75" L x 2.25" W x 1.5" H.
Transmit range is greater than 100 feet under normal operating conditions, with a external long-range antenna available that plugs in to the connector on the unit, to extend the range if required.
Click on the photo for a closer look.....
Here is the other application I am using one of these units for.....