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And radio transmissions can easily be faked, I once convinced a guy in the next town I was Russian Tank Commander on a CB once.
I very much doubt if he was using multiple recievers to triangulate the source of your signal.
The signals from the lunar lander came from the moon. Either that's fact or a huge number of people around the world are all lying about it.
You could argue that they sent an unmanned ship up to drop a receiver and transmitter and that the signals originated on Earth before being received and retransmitted from the moon, but that's very different to you fooling that guy on CB.
We know that the USA had the capability to do a manned lunar mission in 1969 - they were far from secretive about it. Telling everyone was the whole point.
We know that the USA sent ships to the moon and back a number of times, including during each of the manned missions. The ships were tracked and the signals from them were tracked.
So we know they could have done it and we know they spent the money necessary to do it...so why would they have run the enormous risk of faking it even if they could have faked it (and it's highly unlikely that they could have faked it).
The conspiracy faith makes no sense unless you believe that aliens intervened, ordered the USA to fake the missions and either faked it themselves or provided the USA with the technology to fake it in sealed black boxes that the aliens took away afterwards (since the technology didn't exist afterwards).
It's not a convincing argument.