That’s time station CHU in The Empire Strikes Back

Earlier today, I published a post noting that I thought I heard the time station WWV in a scene of The Empire Strikes Back.

SWLing Post reader, RadioGeek, quickly corrected me: that's Canadian time station CHU's data pips I'm hearing, not circa 1980s WWV!

Listen for yourself

Here's the clip from The Empire Strikes Back, Battle of Hoth: listen at 25 seconds and 40 seconds (the clip starts at 23 seconds):

Now listen to the recording of CHU I made only moments ago-note the tone and duration of the data pips at 25 seconds:

http://swling.com/blog/wp-content/uploads/2015/12/CHU-Canada-14.67MHz.mp3

No wonder I mixed up CHU and WWV-I've listened to both for propagation since I was a kid.

I wonder what Lucas Film sound engineer(s)/artist(s) chose CHU for this scene? Anyone know, by chance? Can anyone find out?

No doubt, they're an SWL or ham radio operator. Perhaps this may also explain the SSB-esque radio dialog between fighter pilots throughout the Star Wars films:

Please comment!