Well, it's the strongest radio transmitter we could get.
3 seconds sound clip from the Independence Day (1996) movie soundboard.
You can hear this line at 01:52:43 in the Blu-ray version of the movie.
Quote context
[...]
- Except the nuke will not detonate at impact.
- You'll have 30 seconds to get your asses out of there.
- Well, it's the strongest radio transmitter we could get.
- It'll tell us when you've uploaded the virus.
- 30 seconds. Don't you think that's cutting it a little too close?
- Oh! We're gonna be well on our way back home before we shoot that thing off.
- I don't understand why you can't show someone else how to plant the virus. Someone who is trained.
[...]