I used to be a fan of RadioLink transmitters until the neutral/deadband gave up after a year or so of ownership. I can only imagine the steps used by RadioLink/Dumbo RC to keep costs low. sosidge, I think you hit the nail on the head when you talked about getting a bad one. Quality control seems to be out of control over the past decade+ of ultra low cost RC transmitters being put on to the market. Even though they get a bad rap, I had to see for myself...I had three FlySky FS-GT3C radios, and quality control surely was the issue in the one throttle potentiometer. The other two GT3C radios were fine, but the cheap-ish feel of jog/dial/wheel & buttons; along with me not having to upkeep many RCs for friends/family to play with... I reverted back to my thoughts of how important it is not to skimp (too much) on radio gear.
If I have a sudden influx of family members/friends stopping by to enjoy my hobby (and my RCs), would I buy more cheap radios again? Most likely.
Anyway...
https://www.radiolink.com/DUMBORC