Originally Posted by
TenzoR
KR-210S, KR-407S, KR-409S are the same speed. The difference is KR-409S uses an user replaceable coxial cable for antenna to improve reception. The KR-210S is 2 channels.
I emailed kopropo before but can't seem to find the email now.
I am more interested in a comparison between the 408S and the rest, as I have the 408S now and need to buy another receiver. The antenna is user replaceable on the 408S too. My Radio is a Helios, so I suppose no DDS for me then. And all my servos are digital anyway.