Thought I'd say hello! I'm not new to RC but have been out of the loop for the last 10 years plus. I'm building a new glider and had a question regarding digital servos. Since upgrading to a NX6 radio I decided to go digital and use the KST DS145MG for a wing servo. I got them today and when plugged in, they made a weird noise that eventually mellowed out. One of them still makes it here and there. Almost like a digital morse code sound even when it's not moving. Is this normal? I'm used to the old technology and where the servos really only made a noise if it was binding. I want to make sure this one servo is good before imbedding them in the wing. I'd post pictures or a video of the sound but I guess you have to have 10 posts first.

Youtube, such a great resource! Had some time to research this and I guess it's normal. Digital whine because of higher frequencies.

Its normal.

Digital servos, especially those, are very precise and simply the weight of a control surface will make them push to find center constantly so that they chatter and whine a bit. No worries.