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First acquaintance of the common balun in antennas

Balun is short for Balance To Unbalance Transformer. Balun can use to transmission between balanced and unbalanced, impedance transformation, and so on.There are current and voltage balun to select for us.  ...

Read more  Balun,  AmateurRadio,  Antenna

How to set to connect the analog repeater with Ailunce HS2?

Ailunce HS2 is a full-frequency SDR tranceiver. If there is a local analog repeater, you can connect to repeater with your Ailunce HS2. but do you know how to set it? Today we will take Zhengzhou Relay as an example to show the detail steps.  ...

Read more  AilunceHS2,  Repeater,  AmateurRadio

what programming interface of your radio?

For ham, it is very interesting to do some simple DIY to achieve some of your own special demands. Therefore, it is a simplest need to know the function of programming interface. Today we will take a look at several programming interfaces of Retevis and Ailunce.  ...

Read more  AmateurRadio,  program,  interface

Best Handheld Radios for Outdoor Enthusiast

Venturing for miles into the forest without backup is one of the most dangerous activities you can perform. Thankfully, radios can keep you in contact with other hunters, hikers, and outdoorsmen while taking up very little space and weight.  ...

Read more  Best Handheld Radios for Outdoor Enthusiast

What Does A Radio Repeater Offer?

In general, radio waves travel in straight lines. They can go around and through things but this can drastically affect the strength and clarity of the signal. This causes problems when you’re operating a radio system in a built-up, hilly, or mountainous area.   ...

Read more  Repeater

RTC29 Six-Way Charger Multi Gang Bank Charger

Retevis RTC29 Six-Way Charger Multi Gang Bank Charger for RT29 HD1 Walkie Talkie and Battery  ...

Read more  RTC29 Multi Unit Charger Station

How to Save my Favorite FM Broadcast Channel via radio keypad?

We all know that HD1 is an FPP radio. It allows us to program the radio via the radio keypad. Can we save my favorite FM broadcast channel via the radio keypad? Yes!  ...

Read more  FM Broadcast,  HD1

Update Nextion Display for Pi-Star MMDVM DMR Hotspot

Few days ago, I received a customer problem, how do I install the Nextion Driver on his Pi-Star MMDVM Hotspot? Today I will share my experience how to update the Nextion Display.  ...

Read more  Nextion Display,  MMDVM Nextion Display

Roaming Function on Retevis RT73

Roaming is when a radio is set to automatically move between repeaters depending on which has the strongest signal. In the roaming system you have to set the RSSI (Received signal strength indicator) threshold which is minimum signal strength that the radio will consider to be strong enough before it starts searching for a stronger signal. Roaming function is a safety feature on the mobile radio.  It has roaming fucntion on Retevis RT73.   ...

Read more  amateur radio roaming,  RT73 romaing