# Mobile phones on a light aircraft?

**URL:** <https://boards.straightdope.com/t/mobile-phones-on-a-light-aircraft/600967>\
**Category:** Factual Questions\
**Created:** [October 27, 2011, 2:34pm UTC](https://boards.straightdope.com/t/mobile-phones-on-a-light-aircraft/600967 "2011-10-27T14:34:18Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![hibernicus](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/hibernicus/32/2802_2.png) [@hibernicus](https://boards.straightdope.com/u/hibernicus)\
**Post date:** [October 29, 2011, 8:00pm UTC](https://boards.straightdope.com/t/mobile-phones-on-a-light-aircraft/600967/21 "2011-10-29T20:00:49Z")

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> [@md2000](#):
>
> Oh, and a signal every fifteen minutes?? No, your phone pings the cell every second or so with a “hello I’m still here” packet

I think you’re responding to my post?

Where I live, if you leave a GSM phone sitting near a speaker, you will hear a loud sound coming through the speaker every 15 minutes with a certain rhythm “BEEP b’beep BEEP b’beep BEEP”.

Edited to add: “Page Repeat Period”, apparently. It varies from network to network.

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