NEW TI-99/4A TI99 Home Computer RF VIDEO MODULATOR UM1381-1 CRT TV Gaming Switch

Texas Instruments Video Modulator Model UM1381-1 for TI-99 untested

Texas Instruments Video Modulator Model UM1381-1 for TI-99 not tested

Texas Instruments Model UM1381-1 Video Modulator RF Adapter for TI99/4A Computer

UM1381-1 VIDEO MODULATOR ADAPTER TEXAS INSTRUMENTS

Texas Instruments Model UM1381-1 Video Modulator RF Adapter for TI99/4A Computer

RF Video Modulator UM1381-1 TI-99/4A TI99 Home Computer Switch Untested

Texas Instruments Video Modulator Model UM1381-1 for TI-99 VTG. not tested