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Category Archives :User Tutorial

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

The Effect of the Gain Antenna on the Signal of the Walkie-Talkie

Therefore, installing a high gain antenna on the walkie-talkie can greatly increase the communication space of the walkie-talkie and greatly increase the communication distance.   ...

Read more  high gain antenna

Screen Icons on Retevis RT85

Retevis RT85 as a ham ananlog radio is very popular in the market now. It has dual band,dual standby,dual display. It use the DOT-MATRIX LCD display. Every function will shows their icons on the screen.   ...

Read more  Retevis RT85,  Retevis ham radio

How to set TX Authority of Ailunce HD1?

Many customers of Ailunce HD1 ask how to set the TX of Ailunce HD1 to be prohibited. do you know how to set it? There are four setting options for TX Authority of Ailunce HD1.we'll show how and why to set it in the blog.  ...

Read more  Amateur Radio,  Ailunce HD1,  TX Authority

Which version of firmware do you need for your RT90?

Many hams want to upgrade the firmware of their Retevis RT90, but there are many versions of firmware on the support page of Retevis RT90. Then, which version of firmware do you need for your Retevis RT90?  ...

Read more  Retevis RT90,  firmware

How to use the Rolling Code of Retevis RT73?

If the radio supports the rolling code, you just need to make one codeplug to program many radios. the blog will show how to use the Rolling Code of Retevis RT73.  ...

Read more  Rolling Code,  Mobile Radio

What is the Difference Between Simplex and Repeater Channels?

From the beginning when I learn the ham radio knowledge, There are two basic ways to using your radio. One is simplex, the other more popular way is using a repeater. I often get confused how to operate a radio connect to a repeater, the shift frequency downlink and uplink.Today, let us learn the difference between simplex and repeater.    ...

Read more  Simplex and repeater,  the difference between simplex and repeater