The Personal Inter-Call - also known as the Personal Intercall Wrist Communicator (full name) - is a specialized communication device, used exclusively by International Rescue.
Hidden inside a normal wristwatch, it gives its wearer immediate (and, when necessary, covert) access to IR's communications network.
The Uninvited[]
Scott Tracy used his Personal Inter-Call to warn Virgil and Gordon to stay clear of the Lost Pyramid of Khamandides.
Move - And You're Dead[]
Alan Tracy used his Personal Inter-Call to alert Tracy Island when he and Grandma were left stranded on the San Miguel Bridge.
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Day of Disaster[]
From high up in the Allington Suspension Bridge, Brains covertly used his watch to alert John Tracy - up on Thunderbird 5 - to the imperiled Martian Space Probe, following its crash off the overloaded bridge and into the river below...
Thunderbirds 1, 2 and 4 respond, and Brains was then able to direct their efforts (notably Gordon Tracy's, in TB4) to successfully rescue the wrecked rocket's trapped two-man crew, before it explodes...
Alas, the skeptical Bridge controller - thinking him quite mad, for muttering incessantly into his watch, of all things - saw poor Brains carted off to the doctors (from whom he was, himself, rescued by friend and fellow IR agent Lady Penelope).
Thunderbirds Are Go[]
Jeff called Alan via his watch during Alan’s dream at The Swinging Star.
Thunderbird 6[]
In the film Thunderbird 6, Jeff Tracy and Alan communicate using their watches.
Alan uses his watch in the movie Thunderbird 6
Jeff
Thunderbird 6
The Stately Homes Robberies[]
In The Stately Homes Robberies for The Anniversary Episodes, Scott Tracy transmits diagrams of the Tower of London's rooms layout - and the schematics of the Auto-Bomb, left in the Jewel House by Mr. Charles - to Gordon, via the aquanaut's watch, to help his brother defuse the bomb in time...
Behind the Scenes[]
In an interview for the Thunderbirds Comic in 1994, Gerry Anderson was asked, "How did you make the wristwatches show certain characters?" This was his reply:
"Even today miniaturisation hasn't quite reached the stage where we can have wrist-carried videophones, so back in the 1960's there was no way we could build a human-size watch communicator, never mind a puppet-size version! What we did was to make a very large model of the watch and wrist and mound in the face a screen onto which we could run, by back projection film footage specifically shot for whichever message we wanted to show. Our cameraman would then close right in on the watch and wrist so that was all you saw on the finished film."