Really basic questions about radio interferences

[WRVE426]

A friend of mine gave me this device: https://www.amazon.com/dp/B09482NSV9  which detects EMF, RF and EF emissions.

My question is embarrassingly primitive: which of these emission would adversely affect the reception of radio signals both of GMRS or general SW radios?

Thank you!

[nokones]

All the above.

[axorlov]

The emissions around 450-470 MHz will directly mess with the receiver (if talking about GMRS). They will be making Signal-to-Noise ratio worse. The higher frequency emissions, when strong enough, may have an effect on internal electronics of the radio. The lower frequency emissions unlikely to cause problems, but there are cases when they have an effect because close enough to intermediate frequency or any harmonic of it. Radios are constructed to be protected from the off-band interference, but if signal is strong enough, or/and radio is cheap enough, you will have an adverse effect. Biggest problem is always the in-band interference, 450-470 MHz for the GMRS.

[BoxCar]

The specifications for the unit show it measures up to 454 MHz in the UHF spectrum which is below the frequencies used in GMRS. It will however, give you an idea if there are interferers present.

[WRVE426]

Thank you all for your answers!!

[SOBX]

I agree with nokones...everything.

When I key my Boo-fang UV-5R to talk, the right click menu on my wireless Bluetooth mouse pops up on my computer screen.