The key to solving the frequency drop phenomenon of wireless microphones is actually to improve the signal-to-noise ratio of wireless systems. Improving the signal-to-noise ratio usually starts from two aspects.
<<Honor of Kings Finals Almost encountered frequency interference? (1/2)
- Reduce the noise floor of the RF signal
The main reasons for the high RF noise floor of the HOG finals are the interference of the large LED screen and the intermodulation distortion of the intercom system. Due to transportation costs, the back covers of many LED large-screen circuits have been removed, so that the original electromagnetic shielding has been destroyed, resulting in strong electromagnetic interference. Therefore, we must first check whether the back is covered with a shielding layer. If not, we To wrap the circuit section with aluminum foil. Then we need to check if the LED controller has any free output ports. If so, we need to plug it in with a terminal or wrap it in aluminum foil as well.
Another problem that needs to be solved is the serious intermodulation distortion of the on-site intercom system. First, we need to recalculate the frequency of the wireless system when the intercom system is turned on.
Then, according to the situation on site, we can widen the distance between the intercom transmitting antennas to reduce the intensity of intermodulation distortion interference. Through the above steps, the noise floor condition of the site has been improved.
- Increase the signal strength of the channel
First of all, we need to check whether the placement of the receiving antenna is reasonable. If it is not reasonable, we must adjust the placement of the receiving antenna to shorten the distance between the receiving antenna and the transmitting antenna as much as possible. In addition, we can use strong directional antennas such as Shure HA8089 according to scene conditions