Note: Due to COVID-19, the flights reduce and the delivery time may be delayed. Please understand. ×

+86 15093323284

 Longgang,ShenZhen, CN

Blog

How to set and use Retevis RT97P DMR repeater?

Retevis RT97P is a Mini and Portable size DMR repeater. Do you know how to set and use the repeater?  ...

Read more  Retevis,  Repeater

How to Program Retevis RA685 to Works on an Analog Repeater

As we all known, radio amateurs often connect to a repeter to extend the communication range. Today, we are going to take Retevis RA685 as an example to learn how to connect to an analog repeater.  ...

Read more  Retevis RA685

What is the Length of the Antenna to Achieve the Best Effect

when the length of the antenna is 1/4 of the wavelength of the radio signal, the transmission and reception conversion efficiency of the antenna is the highest.  ...

Read more

【Amateur Radio News】FCC $35 Amateur Application Fee Effective Date Announced

For GMRS users, the new $35 license fee changes will go into effect 30 days from the date of publishing in the Federal Register, which means they will now be in effect on 04/19/21.  ...

Read more  GMRS Fee,  FCC Amateur Radio license application fees

What is the Channel Work Alone? How does it works on Retevis RT3S DMR Radio?

"Lone Worker" gives a tone at regular intervals to which the lone-worker needs to respond by pressing the PTT button. If the worker fails to respond, within the pre-defined time, the radio will then go into emergency mode, and help and support would be sent to them.  ...

Read more  lone worker,  RT3S lone worker,  Retevis RT3S

Something you need to pay attention to when you set scan function on Retevis RT3S

Scanning is a very common and important function for amateur radios. Therefore, when we set the Retevis RT3S scanning function, we often ignore some simple settings because of simplicity. Today we will summarize the settings that are easily ignored.  ...

Read more  Retevis RT3S,  scan

What's SSB and DSB

When using multi-band or even full-band radios, we usually need to choose the working mode, which includes USB and LSB, that means the Upper Side Band and the Lower Side Band. they are the SSB signals, and the DSB is the sum of the USB and LSB  ...

Read more  DSB,  SSB

How to know if you two radios can work together?

There are so many radio brands in the market and so more radios. how do know the radios that can work together?  ...

Read more  Amateur radio,  ham radio

How to set and show CH NAME on Ailunce HD1?

We not only can set and show CH number and frequency but also name for a channel on Ailunce HD1. but do you know how to set and show CH NAME on Ailunce HD1?  ...

Read more  Ailunce HD1,  amateur radio

How do you think about Privacy Tone?

the privacy tones are CTCSS tones, DCS tones, or PL tones, or Squelch tones. But, it should be understood that the privacy codes, as such, do not ensure the privacy of your conversation.  ...

Read more  CTCSS,  DCS,  Privacy tone