Chad Lemmen wrote:

: Why does the KDR-510 datalink receiver use two input wires for power and
: two for ground? The schematic looks like this
snip
: Is the power positive 2 and power ground 2 wires just for redundancy?
: I've never seen any avionics that use two wires both for power and ground.
: Do both 1 and 2 need to be hooked up or just power and ground 1?

Chad, the King equip I have (KX-155, KN-62) also have 2 pins each for power
and ground. These pins are connected together internally in both units.
They are hooked up using 22ga wire, so I suspect that some limit on current
in a 22ga wire is exceeded with a single wire. I would hook up both pins.
--
Aaron Coolidge (N9376J)