MFJ-4117,BIAS TEE DC POWER INJECTOR, HF, W/ON-OFF 1-50VDC, 1A

The MFJ-4117 Bias-Tee is ideal for running coax to distant devices allowing them to be placed
anywhere regardless of power availability. Several MFJ products have a built in Bias-Tee, so the
DC / RF coaxial cable can be directly connected to them as well.
The MFJ-4117 Bias Tee operates on frequencies ranging from 1-60 MHz. The Bias-Tee is used
to inject DC voltage onto coaxial lines. The DC voltage is separated from the RF signal by
another MFJ-4116 or MFJ-4117 on the terminating end (See Figure 1). Any standard 2.1 mm
1-50 VDC, 1 Amp maximum adapter will work. The MFJ-4117 is equipped with a DC switch to
turn the remote equipment on and off. When off the center conductor of the coaxial cable is DC grounded to insure no static electricity will build up on the center conductor.

Thanks for looking

Don VE7DXE