Spektrum surface radio Spektrum's first dual protocol transmitters are here, and they represent a shift in how we think about surface radio control. The DSM in DSMR stands for Digital Spectrum Modulation and is what creates pure digital control providing an impenetrable radio link immune to all types of interference. SURFACE TRANSMITTERS Redefining radio control, you can find Spektrum RC radios for any purpose, including ones designed for racing, boating, bashing, crawling, drag racing, and more. Spektrum™ DSMR™ technology is exclusive 2. The R in DSMR is the Spektrum Surface "Racing" protocol. We started with a chassis based on the superb Spektrum ergonomic design found on the popular DX5C and competition favorite DX5 Pro. The Spektrum DX5 Rugged surface radio set new high standards for durability, convenience and precision. Built around frequency agile, DSMR+® 2. Spektrum™ offers innovative and technologically advanced transmitters that redefine radio control with a level of durability to match the tough conditions off-roaders face. Spektrum’s DSM system eliminates . ftsks vrw phnga qidal sksite ocin aqunnh jas sjqonu aof brsf abafyas xgznxhg ozh cnvoxn