I have a atw-t52 audio techina wireless mic. And when i turn it on thr crackling begins to come through the speakers and i have to play with the input and output cable and move the base unit around and adjust the base unit atennas until the crackling stops but then a low hum starts coming from the speakers

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https://docs.audio-technica.com/us/system9_en_web.pdf

You could try another power adapter on the receiver, maybe this one blew the filter capacitor. I doubt your problem being the mic, rather check the receiver. Luck !

try changing frequencies, also make sure that the mic and the reciever are on the same frequency, what it sounds like to me is that it is set to the adjacent frequency, also be sure the batteries are fully charged.

I don't think is possible. But its entirely my point of view,as i feel technically its not possible.

Try checking your user manual provided for microphone. That may offer you better guidance.

A common problem that SOME have is due to the foam windscreen inside the metal screen rubbing the diaphram of the mic.

Unscfew the dome screen and make sure the foam is out agaist the scree everywhere.

If the dome has become dented, this is my cure: Temporarily remove the foam sheet inside the dome. Put the dome over the handle of a Crescent wrench (has about the right contour). Pound on the screen with a RUBBER mallet, rotating the screen as it reforms! Good as new! Replace the foam sheet and reassemble!

Some of these have a body cover that just unscrews off, and expose a set of rotary channel and group selector that you can turn with a small flat screw driver. Match to the new numbers letters on the receiver. If it is the LED type you just need to hold the ch or grp button down until the display flashes then just toggle through the codes.

might just be the mic wires came loose...I have oner and the mic is held in by a small rubber O-Ring and as people drop it it falls out and can short out

hello firstable you need to know at how many ohms is the base unit then in microphone change the impedance transformer to match the low or high frecuency you want......saludos

Audio Technica Part number 235401550, call 330-686-2600. The cost is $21.93, plus shipping

It is very common to have the squelch on the receiver set at full or much too high. With the audio output unplugged or at least turned all the way down, and with the transmitter turned off, locate the squelch control - you may need a screwdriver depending on which model of receiver you have. Turn the squelch control counter-clockwise until the TX light turns on, then turn it back up just past the point where it turns back off.
If you turn it all the way down and the TX light doesn't come on, that's okay. If you get blasts of noise occasionally when the transmitter is turned off, then set the squelch a little (only a little) higher until it stops.

Joe