# Why doesn't radio fade out?

**URL:** <https://boards.straightdope.com/t/why-doesnt-radio-fade-out/355481>\
**Category:** Factual Questions\
**Created:** [May 5, 2006, 1:16am UTC](https://boards.straightdope.com/t/why-doesnt-radio-fade-out/355481 "2006-05-05T01:16:27Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![jnglmassiv](https://avatars.discourse-cdn.com/v4/letter/j/f07891/32.png) [@jnglmassiv](https://boards.straightdope.com/u/jnglmassiv)\
**Post date:** [May 5, 2006, 10:31pm UTC](https://boards.straightdope.com/t/why-doesnt-radio-fade-out/355481/21 "2006-05-05T22:31:39Z")

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> [@Q.E.D.](#):
>
> You’re half right. FM receivers DO lock on to the strongest signal on a given channel, but this is variously called _FM signal capture_, _the FM capture effect_ and other similar terms. _Selectivity_ is the ability of the receiver to discriminate between signals on adjacent channels.

You’re right, of course. Professor Starr would be very disappointed with my post.

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