Check the listing for details. Spektrum DX Pro+ DSMR TX Only SPMR5035. Condition: New. Listed at 299.99 USD. Spektrum DX Pro+ DSMR Transmitter Overview If you're a racer, basher or boater who's looking for a radio with a "custom" feel and next-generation capabilities, look no further than the Spektrum™ DX Pro+ 12-Channel DSMR+® transmitter. It offers a staggering list of advanced features that includes the virtually unlimited possibilities 12-channel control offers. Built around frequency agile, DSMR+® 2.4GHz technology, you can use the DX Pro+ in any type of surface application, including boats. Its range and response, particularly in noisy 2.4GHz environments, are superb. The DX Pro+ is designed and engineered to perform in every single surface segment imaginable, not just in RC racing. It includes a host of ergonomic options to make the transmitter custom fit you. Additionally, the DX Pro+.