Daily Archives:May 31,2021
Why is necessary to set the squelch level？
- May 31,2021
- Yamy
- 0 Comments
- Radio Function
Walkie-talkies communicate with each other by radio signals. Different from wired communication, background noise will inevitably appear in radio communication. This kind of noise is tiresome and causes auditory interference and fatigue to users. The purpose of setting the squelch level is to control the influence of back noise. ...
What's QPSK modulation?
- May 31,2021
- Yamy
- 0 Comments
- None
QPSK is short for Quadrature Phase Shift Keying or called four-phase shift keying. and it is a digital modulation. Do you know how QPSK works？ ...