I found this in a box of stuff at a yard sale. Telex made several versions of this noise canceling hand mic for Ham, CB, and Aviation. This was very dirty, but except for a bad battery box, it was electrically functional. The plastic housing was very faded from sunlight exposure. I cleaned it up, replaced the battery holder, and wired it for my converted CB-to-10 meter radio. It can be heard regularly on 29.000 AM. Here's a few pics...
