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New Model #10581

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Baofeng UV-21 PRO

Added by Darrell Wasill over 1 year ago. Updated 11 months ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
-
Target version:
-
Start date:
05/16/2023
Due date:
% Done:

0%

Estimated time:
Equipment Loan/Gift Offered:
I read the instructions above:

Description

Likely another edition of the P15UV it would be nice to see this series CHIRP supported as the Abbree software is difficult to use.

https://www.aliexpress.us/item/3256805339694455.html


Files

BaoFeng-UV-21-Pro-High-Power-Long-Range-Rechargeable-Type-C-Walkie-Talkie-Dual-Band-Two.jpg_640x640.jpg (65.3 KB) BaoFeng-UV-21-Pro-High-Power-Long-Range-Rechargeable-Type-C-Walkie-Talkie-Dual-Band-Two.jpg_640x640.jpg Product Image Darrell Wasill, 05/16/2023 10:46 AM
Bao21.data (48 KB) Bao21.data Sample image from P15UV OEM software Wito Krasnal, 07/14/2023 09:39 AM
DSCF9468.jpg (243 KB) DSCF9468.jpg dimensions compared to Quansheng Wito Krasnal, 07/14/2023 09:40 AM
DSCF9478.jpg (240 KB) DSCF9478.jpg back Wito Krasnal, 07/14/2023 09:51 AM
Bao-21-2.data (48 KB) Bao-21-2.data Wito Krasnal, 07/18/2023 09:39 AM
download from radio.pcapng.gz (61.9 KB) download from radio.pcapng.gz Wito Krasnal, 07/18/2023 09:39 AM
upload to radio.pcapng.gz (187 KB) upload to radio.pcapng.gz Wito Krasnal, 07/18/2023 09:39 AM
BF_UV21RV2_opened_1280.jpg (267 KB) BF_UV21RV2_opened_1280.jpg UV-21RV2 opened Soenke Peters, 12/18/2023 07:33 AM

Updated by Wito Krasnal over 1 year ago

Darrell Wasill wrote:

Likely another edition of the P15UV it would be nice to see this series CHIRP supported as the Abbree software is difficult to use.

https://www.aliexpress.us/item/3256805339694455.html
It's really a "UV-21R" with green "PRO" sticker, whatever it means. As probably everyone knows, the "UV Pro series" v1.2.4 software available from Miklor does not recognize this radio. On the other hand, nobody in the internet have yet seen or bought a "real UV-21 Pro" (with GPS etc.). Sample image from P15UV OEM software included, however useless it is. Firmware looks evidently incomplete, lacking separate tail option for repeater, backlight time etc. I believe it a temporary patch. Gossip says firmware is not hardcoded and could be upgraded. I'd rather believe this radio a leaked prototype.

Updated by Wito Krasnal over 1 year ago

If anyone is interested, here are wireshark/usbcap captures of data transfer between OEM P15UV software and the UV-21R radio, and the data image used to transfer.

Actions #3

Updated by Soenke Peters 11 months ago

This radio is a disappointment to me.

The build quality is not too bad with at least some protection efforts against the ingress of dust.

But the transceiver is based on an RD1846 (see https://github.com/ZdenekBrichacek/PCB-2way_Radio-AT1846 for datasheets and programming manual) and the main µC's marking lacks information.
Debugging pins are marked, but did not try.

For disassemply , you have to unscrew the nuts of the antenna connector and the volume potentiometer (pull of knob).
Then remove both Torx T8 screws in the battery compartment.
Carefully open, as the keyboard pcb is attached to the main pcb with a flex ribbon cable.

The two power transistors are thermically coupled to the case with heat-conducting rubber. On my radio, one was slightly off and had indents of the adjacent coil.

I added pictures of the main pcb taken with a flatbed scanner, they are available at https://github.com/speters/BF-UV21R-inside

Web Archive of a programming software is available at https://web.archive.org/web/20220209172045/http://download.abbree.com/P15UV%20CPS.rar

Actions #4

Updated by Wito Krasnal 11 months ago

for CHIRP support You can try "Baofeng UV-17" setting (not Pro). Works for me, but channel names are still restricted to 6 chars. All global settings available. Indeed the radio is a disappointment, the only one I regret buying. Still waiting for eventual firmware update, but probably in vain.

Actions #5

Updated by Dan East 11 months ago

The "Baofeng UV-17Pro" model works fine for me, and does support the longer channel names. I'm not sure why Wito Krasnal above is using the non-pro UV-17, as that limits the channel name lengths.

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