Category Archives :Radio Function

We know Ailunce HD1 has the cross band transmit and receive function, and Retevis RT23 has the cross-band repeater function. do you know what is the difference between cross band transmit&receive and repeater?  ...

So now many vehicle-mounted stations are equipped with temperature-controlled fans, and the air pressure and air volume of the fans are controlled by the temperature changes in the vehicle-mounted stations to achieve the effect of energy-saving.  ...

The purpose of squelch is to strictly suppress the noise, but if the suppression is excessive, the weak call signal will also be restricted and cannot be received.  ...

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.  ...

For hams, the scan is a very common and practical function. With the continuous development of amateur radio, the new word scanner has appeared. So what is the scanner, and what is the difference between scan and scanner?  ...

What’s talk permit tone? This alert tone sounds after the Push-to-Talk (PTT) button is pressed and the radio is able to transmit on the channel. This is to prompt the user to begin speaking.  ...

Roger beep is a transmitter ending tone. It is only work on analog mode. If you open this function, after you release the PTT, the receiver will receive a tone. The tone indicates you have transmit over.  ...

In general, radio waves travel in straight lines. They can go around and through things but this can drastically affect the strength and clarity of the signal. This causes problems when you’re operating a radio system in a built-up, hilly, or mountainous area.   ...

We all know that HD1 is an FPP radio. It allows us to program the radio via the radio keypad. Can we save my favorite FM broadcast channel via the radio keypad? Yes!  ...

Hang Up only work on digital mode. it means the radio will transmit as the last receive information within the Hang Up setting time.  ...