What is Squelch and how do you suppress it on a two way radio?
What is Squelch and how do you suppress it on a two way radio?
What is noise squelch and how do I set up noise reduction? One of the questions we often see in our customer feedback. Today, we'd like to take a look at squelch technology.
What is squelch?
In telecommunications, squelch is a circuit feature that suppresses the audio (or video) output of a receiver in the absence of a strong input signal, i.e., squelch is the process of muting a channel when there is nothing on the channel.
What does squelch function mean?
If you are not using your radio, chances are you will hear a constant white noise hiss. This can be a very annoying state of affairs. The squelch feature is designed to eliminate this constant white noise. Allowing you to have a better call experience. Although the squelch level is set differently for different stations, the higher the number, the higher the level. The less interference there is from noise or other extraneous signals, the less noise there will be, but the less likely it will be to pick up the useful weak signals that need to be picked up. Conversely, the smaller the number, the lower the level, the lower the level, the stronger the suppression of noise, the greater the interference from noise and other useless signals, and the easier it is to receive a weak useful signal. Level "0" indicates that there is no squelch suppression, the lowest level.
What is the difference between squelch and noise reduction?
Squelch
Essentially, squelch is a specialized type of noise gate designed to suppress weak signals. Squelch is used in two-way radios and VHF/UHF radio scanners to eliminate noise when the radio is not receiving the desired transmission.
Noise Reduction
Noise Reduction is the ability of a walkie-talkie to intelligently capture the human voice for transmission in noisy environments.
Noise Reduction helps you to get a clear voice on two way radio. AI noise reduction is a new technology that uses artificial intelligence to identify and remove unwanted noise from recordings. remove unwanted noise from recordings.
Through the above introduction, we can find that they do not work on the same objects. The effects are also different. Both features are designed for a better calling experience. If you want a quieter walkie-talkie on standby, then you can choose the one with squelch function. If you want a walkie-talkie with good call quality, you can choose a walkie-talkie with noise cancellation.
Retevis Smart Noise Canceling Walkie Talkie Recommendations
1. NR30/NR630 Noise Reduction High Power Waterproof UHF Radio
This is a two-way noise-canceling walkie-talkie from Retevis, which adopts intelligent AI two-way noise-canceling technology. The two-way noise reduction technology isolates the human voice from background noise and wind. Both parties get superior clarity and volume.
Advantages
Two-way AI noise reduction
One-touch group call function
High-capacity 2800mAh battery
Long range and 8 repeater channels
IP67 waterproof
2.RA89 High Power Dual Band IP68 Waterproof Ham Radio
RA89 is a new high power dual band IP68 waterproof amateur radio. With intelligent noise cancellation and a squelch level of 0~9. It is a very powerful walkie-talkie with many more features.
Advantages:
IP68 waterproof rating
High power and long range
Supports USB-C charging
Intelligent noise reduction
2500mAh high-capacity battery
