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Category Archives :Radio Function

How to Upgrade Retevis RT3S Firmware

RT3S dual band digital radio uses Digital Mobile Radio (DMR) Tier 2 Standard protocol. It is compatible with the popular MOTO TRBO series Tier I and II using standard encryption, It is also compatible with any existing analog two-way radio operating on the supported UHF and VHF frequencies for easy migration to digital technology.  ...

Read more  RT3S,  Firmware

How to Upgrade Retevis RT90 Firmware

Retevis RT90 is dual band DMR mobile radio. RT90 supports analog and digital mode, It provides dual band, dual standby, dual display, dual time slot, operating on both 400-480MHz UHF frequencies and 136-174MHz VHF at up to 50 watts VHF and 45 watts UHF.  ...

Read more  RT90,  Firmware

How to Upgrade Retevis RT82 Firmware

RT82 has two hardware version: GPS & Non GPS. If you radio is GPS version, you need to upgrade the GPS firmware. Otherwise, after you upgraded your radio will show white screen, snow screen, or other problems. So if you want to upgrade your RT82 firmware, make sure you choose the right firmware version first.  ...

Read more  RT82,  Firmware

How to Upgrade Retevis RT84 Firmware

Retevis RT84 is dual band dmr radio. We constantly update the RT84 firmware to meet the needs of customers. You can download it and install the .exe file on your computer  ...

Read more  RT84,  Firmware

Explanation of Walkie-Talkie Function Terms

Explanation of Walkie-Talkie Some Function Terms.  ...

Read more  Radio Function-Terms

Ailunce HS1 HF SDR Transceiver Function Keys

Ailunce HS1 HF SDR Transceiver Function Keys, ​Spectrum Dynamic Waterfall Display. Multiple Working Modes:Receive Mode, Transmit Mode, TUNE Mode, VFO Mode, SPLIT Mode.  ...

Read more  HS1,  Function Key

What is the Dual Capacity Direct Mode (DCDM)

Dual Capacity Direct Mode also is known as 6.25 kHz Equivalence Direct Mode (6.25e DM) – provides additional spectral efficiency by supporting up to two simultaneous Direct Radio-to-Radio Mode subscriber calls within a 12,5kHz allocation of spectrum.  ...

Read more  DCDM

What are the CTCSS and DCS

CTCSS and CDS are also referred to by other names, including CDCSS, P, and DPL, but the official terms are CTCSS and DCS. They don't stop anyone from listening to you, they just stop you from hearing other people.  ...

Read more  CTCSS,  HD1,  DCS