Here are pics of three different receivers. While each has a different look to it, there are commonalities to them.

The first is a standard Futaba R-127DF which comes with just about every radio they sell. It has slots for channels 1 - 7 (even though it came with my 6 channel radio) plus and additional slot for the battery. This is what came with, and I use with my 6 channel Skysport radio.

The second receiver is a Futaba R146iP 6-channel PCM receiver. It has only 6 slots of which I'm using ch 1 - 4 for all 4 basic functions, plus ch 6 so I can utilize the flapperon function of my 7C computer radio. If you look at ch 5 you'll see I have the battery hooked up to it. If you look closely at ch 6 you'll see is shows 6/B. What this means is if you hook up a servo to all 6 channels, you need to run a "Y" on this channel with one end to the servo and one end to the battery. Since I'm only using 5 servos I was able to hook the battery up to ch 5 (the power buss runs through all 6 servo ports on this style of a receiver).

The third pic is the new Berg 7-channel receiver (and yes, that is a quarter next to it for a size comparison) – the blue receiver. Notice, even though it’s a 7 channel it only has 7 ports. This is another case where you can hook up the battery any of the ports, or run a “Y” to both a servo and the battery.

This may seem a bit confusing and overwhelming at first, but study the pictures and it should make since. NCIS did a good job of spelling out what channels perform what function which has for the most part standardized in the industry. Your receiver should look similar to one of those I posted

Hogflyer