[BenLurkin]

Wouldn’t being inside a metal pressure cooker interfere with the radio signal?

[InterceptPoint]

Wouldn’t being inside a metal pressure cooker interfere with the radio signal?
+++++++++++
Yes. They would have needed to add an external antenna and a pressure proof feed through to utilize any sort of radio control.

[JRandomFreeper]

Yes, but an external antenna, especially for the 6 to 8 meter band is simple to add.

/johnny