Tag Archives :N

Antenna is a very important component of radios. The antennas primary function is to transmit and receive clear signals between multiple radios. It is safe to say that an efficient radios will require antennas to operate properly.  ...

RT23 is a dual band amateur radio. Cross-band repeater function and dual receive simultaneously make it is popular in hams zone. This article will show how to manually save a new channel without computer.  ...

The Electron tube power amplifier is the most common power amplifier of hams. we summarize some precautions when use the Electron tube power amplifier in the blog.  ...

Retevis RT73 is a dual band mobile radio which comes with GPS function.Today let us learn how to set and get GPS on RT73 radio.   ...

Brandmeister SMS text service works well on Retevis RT73 Dual Band Mobile Radio.  ...

Ailunce HS2 is an ultra-portable full-frequency full-mode SDR radio. There are many setting items for the user to set. So, if you want to use the Ailunce HS2 more masterly, you need to understand the setting menu clearly first.  ...

Recently many customers feedback the contacts importing of Retevis RT3S works abnormal. so we sum up the problems. if you want to import the contacts list into the Retevis RT3S, or have problems when import the contact list, please try to check again refer to the blog.  ...

10-Common-Sense-of-Maintenance-of-Walkie-Talkie-Battery  ...

We know that the shortest distance is straight line between two points. but it's often not simple when hams communicate with each other from around the world. Because it's not the shortest distance geographically if we connect two points directly on world map, we need to select the right direction of antenna to achieve the better communication effect. Especially for directional antennas, such as Yagi antennas. we must rely on the great circle Maps.  ...

We know when we upgrade the firmware or initialize the Ailunce HD1, the radio need to be in the right mode, such as it must in DFU mode, when we upgrade the firmware. Then when we program the Aliunce HD1, must the Ailunce HD1 be in a particular state?  ...