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How to manually program Retevis RB22 talk to Ailunce HD1

Although Retevis RB22 is a semi-keyboard DMR radio, it also supports programs manually.  ...

Read more  Retevis RB22,  Ailunce HD1

How to judge whether the antenna is compatible with the walkie-talkie

How to judge whether an antenna is compatible with your radio? Generally speaking, how to judge whether an antenna can make your walkie-talkie achieve better reception?   ...

Read more  walkie talkie antenna

Retevis RB22 Dual Band DMR Radio

Retevis RB22 is a UHF frequency band DMR radio. It comes with semi-keyboard which brings you a new experience, and comes with a 1.77inch color screen which also provide you a wonderful visual experience.  Although it dont has the number key, but it also can do pront panel program.   ...

Read more  Retevis RB22,  Retevis DMR Radio

Overcharge protection of walkie-talkie battery

All models of Retevis and Ailunce have overcharge protection function.  ...

Read more  overcharge protection

Something about 1750Hz tone

Retevis walkie-talkies basically have 1750 functions, and some walkie-talkies cover four types of single-tone pulse signaling, such as Retevis RT23, Ailunce HD1.  ...

Read more  1750Hz tone

Digital repeater or MMDVM hotspot? How to choose?

What is the difference between digital hotspot and MMDVM digital hotspot repeater?   ...

Read more  digital repeater,  MMDVM Hotspot

The Difference between Dual Standby and Dual Receive on Two Way Radios

Now no matter analog radio or digital radio dual band radio, they both have dual standby, but dual receive radio is not unusual; But do you know what is the difference between dual standby and dual receive?  ...

Read more  dual standby,  dual receive,  ham radio

What is roaming? Is it useful? When will it be used?

Retevis RT73 mobile radio and Retevis RB22 Semi-keyboard UHF DMR Radio are both have the roaming function.  ...

Read more  Roaming,  roaming function on DMR radio

The Battery Usage Time of Two Way Radio

In the radio communications industry, we talk about radios being on a specific cycle. It’s called the 5-5-90% cycle time assumption. This basically means that when you use a radio, 5% of your time is spent transmitting, 5% receiving and 90% on standby.  ...

Read more  The Battery Usage Time of Two Way Radio