What's the role of the Receiver/Transmitter in Avengers Endgame?
In Endgame we are shown that the Time Travelers leave from a transmitting / receiving unit. But this seems optional.
When Tony and Steve are in 2012, they leave from there to get to 1970 - no transmitter or receiver in this jump. However, 2014-Thanos needs 2014-Nebula to rig the device to ensure his arrival in 2023.
My question is - what role does the transmitter / receiver play in the time travel, when is it needed and when not?
Best Answer
The GPS's connect them to the Quantum Bridge.
They allowed them to travel through it remotely and safely.
Stark solves this with a "time-space GPS," a way for the team to travel through the quantum bridge without getting lost in it. None of any current science suggests that this is possible, writes Shankland. But then he leaves the door open a tiiiiiiiny bit, giving us hope that maybe that ugly brown van's quantum bridge was actually a wormhole (!!!).
Avengers: Endgame and time travel: Why it all makes perfect sense - CNET
So, the reason Nebula needed to help Thanos through was that he didn't have a GPS.
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After the credits roll in Endgame, you can here the sound of metal clanging. Longterm Marvel fans will likely have recognised it straight away but for those of you who are confused or simply cannot remember, it's really poignant. The sound is of Tony Stark building Iron Man's suit in the first MCU film Iron Man.How does the quantum realm work in Endgame?
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Answer 2
As I recall, 2023-Tony and 2023-Steve (in 2012), went to 1970 without the transmitter / receiver, is not the only jump which happened without the "time machine (transmitter /receiver)". Obviously 2023-Steve had to jump several times in the end to put the stones back from where they came. and the time machine was just to send and receive (expected) him from and to 2023.
As I see the Time GPS (made by Tony) is required to set the jump TO the set time (and probably set location) and the pym particles are meant to shrink down to get to the quantum realm for the jump.
I don't see the role of the Time machine in particular, and I couldn't find a relative information. I feel that creators have overlooked the use of machine while delivering a great script.
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