Give these settings a try and let me know how they work for you.ħ3 de K2IE Author Dan Posted on Categories Radio, Technology Tags DMR, Duplex Hotspot, MMDVM, MMDVMcal, Preamble 3 Comments on Duplex Hotspot Reliability Revisited 020 in 2020: An Update on the 020 Project Multiprotocol Digital Network Tests were conducted with an Alinco DJ-MD5, a TYT MD-380, a CS-700 and a Hytera PD-365. Negotiation failures are now the rare exception. So far, using these setting on 2 different N5BOC duplex hotspots have yielded excellent results and reliability. After much consideration, it seems to be unnecessary, with no clear benefit. I withdraw my earlier recommendation to reduce the DMR preamble. 1) Update to the latest firmware.Ģ) Run the MMDVMcal procedure to minimize the BERĦ) Turn off any mode other than DMR to avoid protocol scanning negotiation This supersedes my article from August 29, 2019. Here is my new set of recommendations for MMDVM duplex hotspot reliability when using DMR. I’ve taken these recommendations, added some others, and tested extensively. Granted, fewer transmissions are being lost than at first, but overall the number of transmissions during a longer QSO that fail to properly negotiate with the hotspot are higher than we’d like.Įarlier this week, 020 member Scott did some further digging and came up with aditional ideas found on the interwebs. Several members of the 020 Digital Multiprotocol Group and I remain dissatisfied with our overall user experience.
Last August, I presented a solution for the “lost transmission” syndrome when using an MMDVM duplex hotspot.
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