A console for activating the stargate, known as a Dial Home Device (DHD) in Stargate SG-1 (1997), never appears on the alien planet (called Abydos in the television series). While one might infer that the stargate was activated by hand or some sort of portable device, there's also the matter of the substantial power requirement, which on Earth has to be supplied externally. Subsequent canon from the television series makes it clear that the original power source for a stargate is in the DHD.

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