Feed power to your MK3.1 receiver with the 24" RT 2-Pin Lemo Power Cable from Teradek. This cable is terminated with a 4-pin Hirose connector on one end and a 2-pin LEMO connector on the other. It uses US polarity.
In the Box
Teradek RT 2-Pin Lemo Power Cable for MK3.1 Receiver (24")