Radio squelch what is it

He holds a Bachelor of Science in electrical engineering from the University of California at Berkeley and continued with graduate study in software engineering.

Home Hardware. Squelch Control Some two-way radio receivers have a pushbutton switch that activates a fixed squelch level while others have a rotating knob for adjusting the squelch.

Automatic Squelching Receivers with automatic squelch controls contain circuitry to distinguish noise from useful signals and automatically enable the output only when they detect incoming signals. References Spinaker d. Finally, the tone-key signal is often used to transmit additional information to the receiver. This may include battery voltage, transmitter audio gain settings, transmitter type, and transmitter power level. Find An Answer Browse our vast Answer database for answers to many common technical questions.

Search the Knowledge Base What is "Squelch" on a wireless receiver? Fields Title. URL Name. FAQ Question. Attachment Link s. Last Edit Date. Number of Views Number of Views 1. For example, you should expect more static during the day, especially when the sun is setting and rising, than at night, due to the ionosphere being charged, and increasing the amount of "skip" signals on CB frequencies.

Since this static background noise is constantly changing, you need a way to filter it out. This is exactly why your CB radio has a Squelch Control! Click here for an explanation of the RF Gain Control. What these two functions are doing, is completely different, however.

In summary, you can look at these controls like this: The squelch is a filter for what you are listening to, the RF gain is a control for how far you are listening. It's a good idea to keep your RF gain turned as far to the right as you can. The more you turn your RF Gain control to the right, the more you will hear. Popular Brands.