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The Historical Origin of NATO Phonetic Alphabet

Alphabet interpretation is widely used in amateur radio communication. Due to the low output power of amateur stations and the complicated factors of radio wave propagation, the distortion or fading of the received speech signal is serious, which affects the analysis and identification of information.  ...

Read more  NATO ,  Alphabet

Interference Issues with Amateur Radio Frequencies

In fact, the essence of wireless interference is electromagnetic interference. Therefore, in order to solve this problem, it is necessary to understand and analyze electromagnetic interference in order to find protective measures and effective methods for achieving electromagnetic compatibility.  ...

Read more  Frequency interference

Dynamic Talkgroup and Static Talkgroup on Brandmeister

Manage Dynamic talkgroup and Static Talkgroup on Brandmeister.  ...

Read more  MMDVM,  Brandmeister talkgroups

Ailunce HS1 SSB HF SDR HAM Transceiver

Ailunce HS1 SSB HF SDR HAM Transceiver  ...

Read more  HS1,  HF

Assemble-MMDVM-Duplex-Hotspot

Upgrade my MMDVM duplex hotspot to support VHF/UHF now. Assemble them together again.  ...

Read more  MMDVM,  MMDVM DUPLEX HOTSPOT

APRS SSID Standard Applications

SSID of the APRS protocol specification  ...

Read more  APRS SSID

2019 Novice Rig Roundup (NRR)

The 2019 NRR will be held 0000 UTC March 2 to 2359 UTC March 10. Registration for the 2019 NRR is NOW OPEN!  ...

Read more  Novice Rig Roundup,  NRR

How Can I Get a DMR ID

When we start to play a DMR radio, we need to get a DMR id first. If we want to use the DMR radio to the network. You need to register a DMR id, and the id is the unique identification, just like the cellphone number.  ...

Read more  DMR ID

Set up MMDVM DMR Hotspot to work with Ailunce HD1

Share the experience how I build a digital voice hotspot with MMDVM duplex board and Raspberry Pi  ...

Read more  MMMDVM,  Ailunce HD1,  Digital Voice MMDVM Hotspot