Many thanks to SRAA contributor, Tom Laskowski, who notes:
KNLS - Anchor Point, Alaska, from what I believe is a test transmission on August 1, 1983. According to Wikipedia, KNLS signed on the air July 23, 1983. The program consists of the sign-on ID in English and Russian then is mostly a mix of Big Band music. This recording is 31 minutes long.
Tom's receiver was a Sony ICF-2001 and he started recording at 09:00 UTC on 11.820 MHz. His location was South Bend, Indiana (USA):