This may be radio interference from other electrical equipment nearby. However most likely cause is a low battery in the microphone causing one channel of the receiver to drop in and out. Only use top quality batteries such as Duracell ultra or equivalent. Do not use rechargeable batteries as they don't maintain a high enough voltage.
By the description it sounds like what is often referred to as "motorboating", a low frequency self oscillation in an analog audio circuit. Can be very harmful to speakers.
Likely cause is low voltage (transmitter battery or receiver PSU) or a faulty component in the audio chain. Could ofc be radio interference, so if applicable, change the frequency, also check the squelch level if not automatically set by receiver, obviously also check that you are within receiving range. If you have a VU meter on the receiver, see if it is indicated there, or it may be further up the audio chain i.e. faulty mixer input. Good luck!By the description it sounds like what is often referred to as "motorboating", a low frequency self oscillation in an analog audio circuit. Can be very harmful to speakers. Likely cause is low voltage (transmitter battery or receiver PSU) or a faulty component in the audio chain. Could ofc be radio interference, so if applicable, change the frequency, also check the squelch level if not automatically set by receiver, obviously also check that you are within receiving range. If you have a VU meter on the receiver, see if it is indicated there, or it may be further up the audio chain i.e. faulty mixer input. Good luck!
Answers & Comments
This may be radio interference from other electrical equipment nearby.
However most likely cause is a low battery in the microphone causing one channel of the receiver to drop in and out.
Only use top quality batteries such as Duracell ultra or equivalent. Do not use rechargeable batteries as they don't maintain a high enough voltage.
By the description it sounds like what is often referred to as "motorboating", a low frequency self oscillation in an analog audio circuit. Can be very harmful to speakers.
Likely cause is low voltage (transmitter battery or receiver PSU) or a faulty component in the audio chain. Could ofc be radio interference, so if applicable, change the frequency, also check the squelch level if not automatically set by receiver, obviously also check that you are within receiving range. If you have a VU meter on the receiver, see if it is indicated there, or it may be further up the audio chain i.e. faulty mixer input. Good luck!