Tag Archives :FM

The common satellites use FM transponders, so a simple FM walkie-talkie can realize FM satellite communication. So what should be paid attention to when setting up an FM satellite communication channels?  ...

HD1 supports FM broadcast function. The frequency is 76-107.95MHz. It makes users to enjoy their free time. We know HD1 supports front panel programming. How to set the HD1 FM broadcast when there is no computer, or we are in the outside.  ...

how to program Retevis RT73 DMR repeater and FM repeater without a computer.   ...

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!  ...

Repeater, as the name implies, an FM repeater repeats your radio signal. It is just an amateur radio station that has been designed for the special purpose of retransmitting your signal instantaneously as it is received.  ...

NFM is a narrowband frequency modulation method, which is suitable for communication signals with a channel bandwidth of 25kHz / 12.5kHz; WFM is a wideband frequency modulation method, which is suitable for receiving broadcast signals with a channel bandwidth of about 180kHz  ...

Understanding the different modes of digital voice can enable amateurs to clearly understand the bandwidth and transmission rate used by the digital voice mode. It can also help us understand which mode is easier to get started and which mode should be experienced in the future.  ...

C4FM is a digital modulation for walkie-talkies that hobbyists prefer. Do you know what C4FM means? What are the advantages and disadvantages compared with other digital work modes?  ...

We know that HD1 supports to operate all the settings via radio keypad. This article will show you how to make HD1 communicate with another radio in analog simplex mode.  ...