Tag Archives :amateur radio

For hams, QRP refers to transmitting at reduced power. QRP radio means very low-power radio, normally 5W or less power​. QRP Communication is one of the more exciting projects in the activities of amateur radio.  ...

MARS is short for Military Auxiliary Radio System and is a United States Department of Defense-sponsored program. The program is a civilian auxiliary consisting primarily of licensed amateur radio operators who are interested in assisting the military with communications in a region.  ...

With the popularity of radio, many hams built their radio rooms. In addition to basic equipment such as radio and power supply, we found that they always like to purchase desktop microphones. Do you know why they have to buy a desktop microphone when owning a handheld microphone?  ...

Do you like to program your radio in software? If yes, you need to download the right driver of your radio. do you know how to select the right driver for your Retevis radio?  ...

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.   ...

Why is your signal report of 50W radio not as good as the one just 5W radio? That's because in addition to the environmental loss, the power of the radio has a lot of loss in the antenna system. So many hams like to install them antenna outdoor to reduce antenna system loss. But what do you need to know when installing an outdoor antenna?  ...

On Ailunce HD2, When the radio is off, Press [MENU]+6,turn on the radio. enter the password:654321. Switch IARU regions.  ...

Ailunce HD1 is a dual-band and dual standby DMR amateur radio developed by Ailunce. Since its release, many versions of firmware and software have been upgraded according to customer needs.  ...

Many hams like to make QSO outdoor, so the battery is very important to them. Do you know what are the common amateur radio portable batteries?  ...

Retevis RT84 is a dual band DMR ham radio and supports to import 120,000 contacts. But do you know how to import the contacts csv into the radio?  ...