This sound effect can be found on Bainbridge Records - Living Sound Effects Volumes 1-4 (1993) (Others Media), which was made by Bainbridge Records.
The transmission contains a brief exchange of police radio communications, beginning with the phrase “4-24, mobile check.” When broken down, one can understand the context: “4-24” likely identifies the unit making contact, while “mobile check” indicates that the officer is performing a status or radio signal check while in a patrol vehicle. A dispatcher responds with “424, radio 5-5,” which appears to confirm that the transmission is being received clearly, with “5-5” likely referring to radio readability or signal strength.
A second voice then reports “13-8-32, 34,” which sounds like a reference number, case code, or another unit identifier. The phrase “Stanford 5-9” may indicate a location, beat designation, or status code, though the exact meaning is unclear due to the brevity of the exchange. The officer then says “Just show equipment numbers, number 12, student 9-9-6,” suggesting that equipment or vehicle identification numbers are being logged or verified over the radio.
As of 2026, the exchange appears to represent a routine patrol radio check in which units confirm radio readability, exchange identification numbers, and verify equipment information over the dispatch channel.
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