Gordon is seen calling CQ on a Yaseu FT101B Ham Radio transceiver. The call sign he uses, KC4L, would have been assigned to a ham from the southeastern US, not Texas (otherwise it would have had a 5, not 4, in it). He said he made the radio but it is clearly a commercial product.
At 22:48 as the four characters are walking toward the camera which is panning left, one of the characters nearly physically steps into the camera and at the last minute jumps camera left.