** SOLD **
Asking $30
This is the Spektrum AR636A receiver that came included in my E-Flite Ultimate 2 (not 3D!). A couple of months ago I switched out the AR636A with an FrSky S6R receiver.
To the best of my knowledge this AR636A is not "locked" to the Ultimate 2 and can be re-programmed to be used in other models. Below I have included links to a thread on the HEFA forum discussing this topic, a YouTube playlist of videos about programming the AR636, and the programming cable to connect the receiver to your computer.
viewtopic.php?f=27&t=4072&p=21347&hilit=ar636#p21347
Spektrum AR636 Programming Series videos:
https://www.youtube.com/playlist?list=P ... _-p1esbhAW
Spektrum Programming Cable:
https://www.horizonhobby.com/product/tr ... A3065.html