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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.  ...

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

Ailunce HS1 SSB HF SDR HAM Transceiver  ...

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

SSID of the APRS protocol specification  ...

APRS Display Symbols  ...

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

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.  ...

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

It hasn't snowed for a long time this winter. There is heavy snow in our city these two days. I feel so excited. Today I take my HD1 out. it is a white world. I communicate with my friends with HD1 and really enjoyed it. Maybe the snow gives me another happy mood. I have taken some pictures and can't wait to share them with you.  ...