The process of separating or extracting the modulation from a signal is called demodulation or detection. For amplitude modulation, the process of demodulation or detection can be accomplished very simply using a diode, or it may be achieved in other ways that provide more effective demodulation of the waveform. As amplitude modulation is still widely […]
Amplitude modulation AM demodulation Read More »
In order that a steady radio signal or “radio carrier” can carry information it must be changed or modulated in one way so that the information can be conveyed from one place to another. There are a number of ways in which a carrier can be modulated to carry a signal – often an audio
What is Amplitude Modulation Read More »
Here we interview customers about their radio stories, for helping you know better of our radios and get right ones you need. Today let’s know RT3 better .
Retevis Customer Radio Story — RT3 Read More »
Frequency modulation is widely used for radio transmissions for a wide variety of applications from broadcasting to general point to point communications. Frequency modulation, FM offers many advantages, particularly in mobile radio applications where its resistance to fading and interference is a great advantage. It is also widely used for broadcasting on VHF frequencies where
FM Demodulation / Detection Tutorial Read More »
RT23 has a lot of functions, cross band repeater, dual receive,dual ptt,360 degree channel,one touch setting same CTCSS/DCS etc. Today i will intorduce how to realize dual ptt. Most of radios can’t setup two ptt. for example BH-F8HP. When you push ptt, the radio transmit main channel frequency. If you want to transmit sub channel
Retevis RT23: Setup a side key as sub ptt to realize dual ptt transmitting. Read More »
Today, we will check the dual receive function of Retevis RT23. If you have the RT23, You may fell not clear with 35(VOL-MODE). Look the picture bellow. RT23 has another special functions. It can receiving two signals at the same time. Ordinary radios like BF-F8TH can “watch” two channels. Monitor two different frequencies(even on different
Retevis RT23: How to achieve Dual receive at the same time ? Read More »
What antenna suitable for my radio? let’s talk about the difference of the radio antennas, hope this will help people choose proper antenna for their radios.
Two Way Radio Antenna Interface Types Read More »
Good News! Retevis developed a new licence-free radio, 0.5W, PMR frequency. It is Retevis RT24, a new family member in Retevis team.
License-Free Radio Retevis RT24 Read More »
This article covers UHF Citizen Band (CB) class licensed (public spectrum) radios. VHF is used in marine applications where range over unobstructed surfaces / water is more important. Ultra High Frequency (~477MHz in Australia) does have significant ability to penetrate objects and is better in built up environments. If you’ve used a cellphone, you’ve used
How to choose their own walkie-talkie – UHF CB Radios Read More »
Many people ask me that how to setup the cross band repeater function of RT23. I will give you more details about how to setup and make UHF radio communicate with VHF in this blog. it has two method,by software or radio. At first, we need know what frequency we want to setup. For example,When
How to setup the cross band repeater function of RT23 Read More »
