864 mhz wireless Microphone system

[Shepherd]

Hi does anybody know if there is such a thing as a high pass filter that can be fitted inline with the antenna to prevent breakthrough from Taxi's , the system is in a church we have tried filtering the mains but this has not helped. Many thanks in anticipation of any help.

[Stuart91]

Do you get the breakthrough whilst the transmitter is turned on, or only when it's off?

 

If it's the latter, see if there is a "squelch" control on the receiver, and increase the level on that. Squelch is a way of rejecting low-level signals, sometimes systems come out of the box with it set to a minimum which lets almost anything through once the transmitter is off.

 

There's also a possibility that some of the system cabling could be acting as an antenna and picking up the interference, particularly if cables are poorly screened or have a pin 1-2 reverse on an XLR.

(In the church I grew up in, Radio 2 was clearly audible on the induction loop system. Nobody complained about it for years. :** laughs out loud **: )

[Shepherd]

Do you get the breakthrough whilst the transmitter is turned on, or only when it's off?

 

If it's the latter, see if there is a "squelch" control on the receiver, and increase the level on that. Squelch is a way of rejecting low-level signals, sometimes systems come out of the box with it set to a minimum which lets almost anything through once the transmitter is off.

 

There's also a possibility that some of the system cabling could be acting as an antenna and picking up the interference, particularly if cables are poorly screened or have a pin 1-2 reverse on an XLR.

(In the church I grew up in, Radio 2 was clearly audible on the induction loop system. Nobody complained about it for years. )

 

Thanks for your reply the break through is not there when the system is off I will give what you advise with the squelch a go. Many thanks.

[Shez]

Is it definitely the radio mic receiver itself that is picking up taxi transmissions? There are various other places in sound system installations that are more likely to be the culprit. What make / model is the radio mic system?