There may be a CV that controls the Rolling Thunder. The short range operation would be useful if you had more than oen receiver and subwoofer since it only can link one loco at a time.
Looking in the manual, it seems CV213 is the one. It should be 128 for maximum transmit power. Unless you are on the 868MHz frequency, then it should be 0. Check the good loco. Set the new one the same.
--Randy
Modeling the Reading Railroad in the 1950's
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