a puzzle to solve...how does a battery operated flashlight interfere with radio signal??

i know certain appliances plugged into same electrical circuit can cause interference. but a flashlight??
this is happening in basement where i am installing 3 way switches and replacing receptacles

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FrozenWasteland · 61-69, M

Depends on the flashlight. Some flashlights have a switching power supply between the batteries and whatever they use to make light (a bunch of LEDs or a fluorescent tube) to increase the voltage and switching supplies can be electrically noisy. Radio signals are small so it doesn't take much radiated energy to interfere.

If it's an old-fashioned flashlight with only batteries and an incandescent bulb, I have no idea.

1490wayb · 56-60, M

@FrozenWasteland i think you are correct. it is a newer model, very bright flashlight.