Servos, not all are created equal!

After the total loss of an aircraft that had great sentimental value due to a reversed servo I decided to check my servos, of which I have many.
The radio feeds a pulse to the servo many times per second, the width of this pulse says to the servo where it should be. The pulse width varies from a minimum of 1,000micro seconds (that's 0.001seconds) to 2,000micro seconds (that's 0.002seconds) this pulse is repeated about 50 times per second (that's an average since not all manufacturers use the same repeat number and the servo doesn't mind).
Here's my point, to me it seems reasonable that the shortest pulse would be fully anticlockwise and the longest fully clockwise, and it is, for about 95% of my servos, notably Acoms and Rich are the exact opposite! So be careful. As a point of interest the shortest pulse is stick right back for an un-reversed channel.

Agreed. All the receiver does is split the channels, and send positioning data down the wires. It doesn't care what's on the other end.

A digital signal, as far as we're concerned, is merely an on/off pulse tone in a given time-space.
So - a 1.5 millisecond pulse followed by a 1.5 millisecond silence - drives the servo to centre.
A one millisecond pulse followed by a two millisecond silence drives it to one end.
A two millisecond pulse followed by a one millisecond silence drives it to the other end.
-
That is a very crude explanation, so if there is some electronics genius out there reading this, don't leap down my neck saying it's all wrong blah de blah!