Based on the preview content, I would guess that the main topic or subject matter might be related to graphic systems, specifically heat press machines, and their involvement in a trade show event called Graphics Pro Expo. The specific mention of "Insta Graphic Systems" suggests a strong industry focus, making it likely to be about the graphic printing industry rather than general electronics or tech topics.
Suggested title: Insta Graphic Systems To Be Part Of Graphics Pro Expo In Long Beach In August 2023 - Kccr Radio Am 1240