This is a dual brand-name professional VHF wireless system.   The system consists of an ATW-T32 handheld transmitter made by Audio-Technica, and a Shure SC4 full diversity VHF receiver with antennas and AC power supply.  The two manufacturers shared the same VHF wireless technology at the time these were made, and these units work together great.

This is used but well cared for, with some mild to moderate cosmetic wear.   Operation has been fully tested, and I will warrant the system for full and proper operation.  Operating frequency is 195.400.

Shure's instruction manual for the SC series VHF wireless microphone system is here:
http://cdn.shure.com/user_guide/upload/1392/us_pro_sc_wireless_en_ug.pdf

If you bid on and win more than one auction, wait to see my invoice for a custom shipping discount.