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What's the meaning of DOUBLE and SINGLE for the RPT-MOD setting of Retevis RT23

Retevis RT23 is a cross-band repeater HAM Radio, but do you find it can set double or single repeater mode? What's the difference between the two modes?  ...

Read more  Retevis RT23,  DOUBLE RPT MODE

How to import contacts csv of Retevis RT84?

Retevis RT84 is a dual band DMR ham radio and supports to import 120,000 contacts. But do you know how to import the contacts csv into the radio?  ...

Read more  Retevis RT84,  contact list,  amateur radio

What is the difference between cross band transmit&receive and repeater?

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?  ...

Read more  Repeater,  Retevis RT23,  Ailunce HD1

Can ATVers use Ailunce HD1?

ATV is the abbreviation of All-Terrain Vehicle, which is all-terrain off-road vehicle, so ATVers is the person who drives all-terrain off-road vehicle. Do you think ATVers can use Ailunce HD1?  ...

Read more  ATVers,  Ailunce HD1

Do you know APRS voice alert?

APRS is short for Automatic Packet Reporting System, and hams like to use it to transmit GPS information or to query the movement trajectory of a friend's radio. But do you know that APRS has a voice alert function?  ...

Read more  Amateur Radio,  APRS,  Voice Alert

Why is the actual output power of your walkie-talkie so low?

In order to communicate with more hams, when we choose walkie-talkies, we will like to choose the highest output power as much as possible when permitted by law. However, sometimes the actual power is much lower than the nominal power. Why or how can we obtain higher output power?  ...

Read more  Ailunce HD1,  Output Power

How to set the RX Info Display Time of Ailunce HD1

Ailunce HD1 is a dual-band dual standby amateur radio and supports importing contacts csv. When receiving, it can display not only specific channel information but also contact information, so setting the RX Info Display Time is also very important. So how to set the RX Info Display Time of Ailunce HD1?  ...

Read more  Amateur Radio,  Ailunce HD1,  RXInfoDisplayTime

Why you can't program Retevis RT3S on radio directly?

Some customers ask how to add or edit DMR id on Retevis RT3S directly, or why I can't program Retevis RT3S on radio directly. The blog will show how to add or edit your codeplug of Retevis RT3S via Front Panel Programming.  ...

Read more  Retevis RT3S,  FPP

What's the RTL SDR

RTLSDR is an innovative invention of the DVB-T USB receiver, the complete software-defined radio.  ...

Read more  Amateur Radio,  RTL,  SDR

What's the Superheterodyne receiver?

Superheterodyne receiver is to convert the high-frequency signal received by the receiver into an intermediate frequency signal through a mixer and then output the intermediate frequency signal to the detection circuit. This intermediate frequency signal is a fixed difference signal obtained by subtracting the local oscillator frequency and the received signal frequency​.  ...

Read more  Superheterodyne receiver,  Retevis