mirror of
https://github.com/mbirth/wiki.git
synced 2024-12-26 23:14:06 +00:00
16 lines
493 B
Markdown
16 lines
493 B
Markdown
|
---
|
||
|
|
title: NASA Roger Beep
|
||
|
|
language: en
|
||
|
|
layout: default
|
||
|
|
created: 2008-08-11 01:30:57 +0200
|
||
|
|
updated: 2010-03-12 19:32:32 +0100
|
||
|
|
toc: false
|
||
|
|
tags:
|
||
|
|
- know-how
|
||
|
|
- miscellaneous
|
||
|
|
- audio
|
||
|
|
- space
|
||
|
|
---
|
||
|
|
The "Roger" beep after transmissions from Space missions is @ 2475 Hz for 250 ms. According to [everything2](http://everything2.com/e2node/Roger%2520beep),
|
||
|
|
there should be a pre-transmission tone @ 2525 Hz for 250 ms. They are called [Quindar tones](http://en.wikipedia.org/wiki/Quindar_tones).
|