XTUGA A140-H Wireless Microphone System 4 Channel UHF Handheld Microphone, A140-H Option:A140-H to reduce the mechanical noise

to reduce the mechanical noise of the camera and other vibration noise

It is suitable for wind drills and hand drills

and the quality is very impressive for the price

However the very nature of being individually designed by hand gives raw finishing of the projects since it should look that students have created on its own

2) Standard Solution 7

XTUGA A140-H Wireless Microphone System 4 Channel UHF Handheld Microphone, A140-H Option:A140-H to reduce the mechanical noise1. Professional Level UHF Wireless Microphone system: Professional UHF microphone system delivers clear and lound audio signal and is much more stable than the VHF, 4 channel wireless microphone receiver,Fixed frequency,Group A 504. 50MHz, 514. 60MHz, 521. 90MHz, 538. 70MHz,superior anti interference ability. Upgraded wireless signal acquisition, 2 antennas can be installed on the back of the receiver to enhance the received signal, ensuring high