📡 UV4R + MMDVM (Pi-Star) connection, issue with BM4602 short message attempts
🧩 Basic configuration
- Radio: UV4R
- Equipment: MMDVM box
- System: Pi-Star
- Connect to server: BM (BrandMeister) 4602 Network
📌 Explanation of the cause
I saw on the BM website that it can be accessed through DMR Short Message（SMS）FeaturesAfter implementing some network services, I attempted to perform sending operations.
The operating procedure includes:
- Try using the two-way radio's messaging feature.
- Try different SMS formats.
- Try modifying the text format.
- Try adjusting the settings related to the BM platform.
However, the final results were all:Send failed
📷 Refer to the screenshot.
(This is a screenshot of the original post)
📄 Pi-Star Log (Key Sections)
M: 2026-06-27 12:48:38.442 DMR Slot 2, received RF Data Preamble CSBK (27 to follow) from BG5VPB to 460990
M: 2026-06-27 12:48:38.559 DMR Slot 2, received RF Data Preamble CSBK (26 to follow) from BG5VPB to 460990
M: 2026-06-27 12:48:38.676 DMR Slot 2, received RF Data Preamble CSBK (25 to follow) from BG5VPB to 460990
M: 2026-06-27 12:48:38.793 DMR Slot 2, received RF Data Preamble CSBK (24 to follow) from BG5VPB to 460990
M: 2026-06-27 12:48:38.915 DMR Slot 2, received RF Data Preamble CSBK (23 to follow) from BG5VPB to 460990
M: 2026-06-27 12:48:39.032 DMR Slot 2, received RF Data Preamble CSBK (22 to follow) from BG5VPB to 460990
M: 2026-06-27 12:48:39.149 DMR Slot 2, received RF Data Preamble CSBK (21 to follow) from BG5VPB to 460990
M: 2026-06-27 12:48:39.266 DMR Slot 2, received RF Data Preamble CSBK (20 to follow) from BG5VPB to 460990
M: 2026-06-27 12:48:39.383 DMR Slot 2, received RF Data Preamble CSBK (19 to follow) from BG5VPB to 460990
M: 2026-06-27 12:48:39.499 DMR Slot 2, received RF Data Preamble CSBK (18 to follow) from BG5VPB to 460990
M: 2026-06-27 12:48:39.622 DMR Slot 2, received RF Data Preamble CSBK (17 to follow) from BG5VPB to 460990
M: 2026-06-27 12:48:39.738 DMR Slot 2, received RF Data Preamble CSBK (16 to follow) from BG5VPB to 460990
M: 2026-06-27 12:48:39.855 DMR Slot 2, received RF Data Preamble CSBK (15 to follow) from BG5VPB to 460990
M: 2026-06-27 12:48:39.972 DMR Slot 2, received RF Data Preamble CSBK (14 to follow) from BG5VPB to 460990
M: 2026-06-27 12:48:40.089 DMR Slot 2, received RF Data Preamble CSBK (13 to follow) from BG5VPB to 460990
M: 2026-06-27 12:48:40.206 DMR Slot 2, received RF Data Preamble CSBK (12 to follow) from BG5VPB to 460990
M: 2026-06-27 12:48:40.328 DMR Slot 2, received RF Data Preamble CSBK (11 to follow) from BG5VPB to 460990
M: 2026-06-27 12:48:40.445 DMR Slot 2, received RF Data Preamble CSBK (10 to follow) from BG5VPB to 460990
M: 2026-06-27 12:48:40.562 DMR Slot 2, received RF Data Preamble CSBK (9 to follow) from BG5VPB to 460990
M: 2026-06-27 12:48:40.678 DMR Slot 2, received RF Data Preamble CSBK (8 to follow) from BG5VPB to 460990
M: 2026-06-27 12:48:40.795 DMR Slot 2, received RF Data Preamble CSBK (7 to follow) from BG5VPB to 460990
M: 2026-06-27 12:48:40.912 DMR Slot 2, received RF Data Preamble CSBK (6 to follow) from BG5VPB to 460990
M: 2026-06-27 12:48:41.034 DMR Slot 2, received RF Data Preamble CSBK (5 to follow) from BG5VPB to 460990
M: 2026-06-27 12:48:41.151 DMR Slot 2, received RF Data Preamble CSBK (4 to follow) from BG5VPB to 460990
M: 2026-06-27 12:48:41.385 DMR Slot 2, received RF data header from BG5VPB to 460990, 3 blocks
M: 2026-06-27 12:48:41.391 DMR Slot 2, ended RF data transmission
M: 2026-06-27 12:48:41.713 DMR Slot 2, received network Data Preamble CSBK (1 to follow) from 460990 to BG5VPB
M: 2026-06-27 12:48:41.951 DMR Slot 2, received network data header from 460990 to BG5VPB, 0 blocks
M: 2026-06-27 12:48:41.951 DMR Slot 2, ended network data transmission from 460990 to BG5VPB
M: 2026-06-27 12:48:41.962 DMR Slot 2, received network Data Preamble CSBK (5 to follow) from 460990 to BG5VPB
M: 2026-06-27 12:48:42.195 DMR Slot 2, received network data header from 460990 to BG5VPB, 4 blocks
M: 2026-06-27 12:48:42.216 DMR Slot 2, ended network data transmission
🙏 Help!
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