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Post by Daniel VA2DG on Aug 11, 2021 3:42:15 GMT
Thoughts on the Radiooddity DB25-D DMR Mini-Mobile Transceiver by W9YA – 31-July-21 Hi everyone
please take time to read this excellent review and thoughts.
This DB25-D is the same as Kydera CDR300UV and Retevis RT-73
DB25-D_thoughts by W9YA.pdf (53.98 KB)
Your comments are welcome.
By the way this has been send to manufactured Kydera. Hope they will take note of it.
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w9ya
New Member
Posts: 6
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Post by w9ya on Aug 21, 2021 18:06:27 GMT
Tnxs Daniel !!; I am planning some more as time permits. And in response to a request I added an Addendum to the above review. BOTH are located (along with any revisions OR additions) here: bfinch.net/NEW-REVIEWS/index.htmlAgain...thanks for the nice comments...es vy 73 om de Bob W9YA |
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Post by jennifer on Sept 21, 2021 7:38:40 GMT
We need an Open CDR-300UV software and firmware project I think if we want the CDR-300UV to be all it can be. It has a lot of potential I think.
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eb3bkw
Junior Member
Posts: 70
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Post by eb3bkw on Sept 23, 2021 17:36:03 GMT
Radioditty DG77 uses the same DMR chip than the CDR300UV. I think it's possible, especially for the opensource developers of openDG77.
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Post by Dave MM7DBT on Sept 23, 2021 22:50:04 GMT
This radio doesn't have the same configuration as the GD77 with a HR_C6000 DMR chip and separate CPU.. instead it uses the HR_C7000 chip, like the GD73 and TYT MD430, which has an integrated CPU within the C7000 chip.
There's plenty information on the C7000 including pinout and diagrams but without the necessary compiler and tools needed to create custom firmware and flash the chip it's unlikely to be possible any time soon.
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eb3bkw
Junior Member
Posts: 70
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Post by eb3bkw on Oct 3, 2021 10:29:35 GMT
Ah, ok, Dave, I was wrong, I thought the gd77 uses the HR_c7000 too. I don't have any Radioditty radio
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Post by maozhenyu on Dec 22, 2021 7:26:55 GMT
This radio doesn't have the same configuration as the GD77 with a HR_C6000 DMR chip and separate CPU.. instead it uses the HR_C7000 chip, like the GD73 and TYT MD430, which has an integrated CPU within the C7000 chip. There's plenty information on the C7000 including pinout and diagrams but without the necessary compiler and tools needed to create custom firmware and flash the chip it's unlikely to be possible any time soon. The Compiler for CSK803s is available here: ai.nationalchip.com/api/v1/assets/32/downloadDocumentation: ai.nationalchip.com/dsp/DSP/html/index.htmlAlso see: github.com/c-skyI also have the user manual of this CPU. Then why it is not possible to do our custom firmware for it? |
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