Check this page for any service bulletins that may affect your product.

TMSB1-1: Correction to fix oscillation of motor driver output circuit in TM1, TM EZ-Tune, TM LITE, TM DUO, and TM DA-

TMSB1-2 Firmware upgrade for TM LITE from s/n 2501650-2506695

ICOM IC-1 interface will soon be replaced with an IC-1A interface, so that the TUNE button on the ICOM rig (AH-4 port types) to operate the TM1 TUNE function from the rig. Effective 10/12/25, all current stock will be depleted, and new IC1-A interfaces manufactured after this date will contain the necessary circuitry to handle this upgraded feature.

Last updated 10/12/25