Understanding Noise Temperature & Communications Relation

Understanding Noise Temperature & Communications Relation: The term Noise Temperature has two rather simple yet distinct meanings in the RF community. This article focuses on its use as a measurement of noise power, whereas another post will explore how it relates to wireless link performance.

The term Noise Temperature has two rather simple yet distinct meanings in the RF community. This article focuses on its use as a measurement of noise power, whereas another post will explore how it relates to wireless link performance. Conceptually, Noise Temperature is not much different than other temperature scales we are familiar with (Celsius, Fahrenheit). … Read more

What is Radio Squelch & Ways to Stop It

What is Radio Squelch: Squelch is the noise reduction system of a Walkie-talkie. The squelch level is used to control unwanted background noise and prevent false triggering from noise when no one is transmitting.

Ever turned on your walkie-talkie and a very odd and annoying sound come through? This is radio squelch.What does “Squelch” mean?Squelch is the noise reduction system of a Walkie-talkie. The squelch level is used to control unwanted background noise and prevent false triggering from noise when no one is transmitting. It’s important to set the squelch … Read more

The Different Types of Walkie-Talkies Explained

The Different Types of Walkie-Talkies Explained: The two most common types of walkie-talkies are Family Radio Service (FRS), and General Mobile Radio Service..

There are a number of different types of walkie talkies on the market that offer various features. The two most common types of walkie-talkies are Family Radio Service (FRS), and General Mobile Radio Service (GMRS).  For many years FRS was considered a low power short range system, while GMRS was thought of as high power long … Read more

CB Radio Frequencies & Channels (PDF)

CB Radio has 40 channels with CB radio frequencies ranging from 26.965 to 27.405 MHz. Channels are generally spaced 10 MHz apart. The frequencies are listed in the table below. I have included different sets of channels used by people in various countries around the world.

CB Radio has 40 channels with CB radio frequencies ranging from 26.965 to 27.405 MHz. Channels are generally spaced 10 MHz apart. The frequencies are listed in the table below. I have included different sets of channels used by people in various countries around the world. As you can see, these CB radio channels overlap each … Read more

CB vs GMRS – What’s the Difference?

CB vs GMRS - The Differences Explained: GMRS and CB are virtually identical as far as how they operate on the air, the only difference is one must have a license and pay fees to the FCC in order for legal operation.

GMRS and CB are virtually identical as far as how they operate on the air, the only difference is one must have a license and pay fees to the FCC in order for legal operation. As such one can hack (“mod”) a standard FRS or CB walkie talkie or handheld transceiver into a powerful multi-user capable … Read more