this post was submitted on 28 May 2025
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Question: Do radio broadcasters have any indication/numbers on how many are listening in while on FM/AM?
Not from broadcasting, but they can pay a ratings company like Nielsen to research certain samples of the population.
There's also a method that was used briefly in billboards to check what radios were tuned to as cars drove by. https://www.sfgate.com/bayarea/article/High-tech-billboards-tune-in-to-drivers-tastes-2744204.php
My understanding was it mostly picked up people listening to their aux to radio adapters though.