nrf240L Module only works when powered by USB

Projects General Guidance
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I made a reciever for my electric skateboard remote that is simply a nrf240l module connected to an arduino uno. The arduino is also connected to a ESC where it is powered and sends a PPM value and UART connection. The arduino is powered via 5.2 volts from the ESC. I can only establish connection between my remote and reciever when the uno is plugged in and powered via USB. I am fairly confident this is a power issue and nothing to do with the code.

When the arduino is powered by the USB the Vin and GND pins read 4.2volts when powered by the ESC they read 4.2 volts. However the 3.3v pin which the nrf module is connected to reads 3.3v regardless. So what could possibly be the issue?

Thanks.

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Robin2 mentions in his simple rf24 tutorial the difficulties that arise from poor power to the rf24 radios and some things to do that may help.

On all of my projects with rf24 radios, I use a separate 3.3V regulator for the radios. You can buy rf24 adapter boards with a regulator on board.

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