Noise suppression for car radios etc.

There are interference signals from the ignition system, electric generator etc. possible on a motorbike.

When using electronical equipment on a motorbike, these interfercences cause crackling and vocal ambient noises and therefore worsen the receiving sensitivity of a connected car radio, two-way radio or mobile phone.

For an effective interference suppression it is necessary to find out how the interference gets into the equipment (for help please check the following: Assistance on vehicle interferences)

Often the interferences are caused by "mass loops". Especially at motorbikes with radio preliminary setup this problem might come up when other electronical equipment like intercom systems, two-way radios are connected and it is not possible to ground all equipment and antennas at the same ground connection.

At all car radios with a mass-free loudspeaker exit (bridged amplifier) these interferences can be suppressed with the AKE noise suppression choke NF221, art. no.: 33140.

This special choke can easily be plugged between the loudspeaker exit of the car radio and the car radio adapter of the intercom system. It makes a complete galvanic uncoupling of the equipment possible without a decrease in transmission quality. It can also be used with two-way radios and mobile phones if they have a loudspeaker exit with bridged amplifier.