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Baofeng Baofeng AR 152 Teardown (I'm studying for tech&gen)

aplchndragon

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Mar 2, 2025
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4
Because of this thread I decided to gather some information.

Here's what I have so far:

IMG_9675.png
There is a tamper switch.

IMG_9730.pngIMG_9727.pngIMG_9726.png
the opposite side local circuitry below

IMG_9732.pngIMG_9733.png

Note: the display was removed. the slit at the bottom of the image is one of four places the metal shield tabs were bent to hold and there is a ground at each of the four slits.

cast aluminum frame
IMG_9670.png IMG_9750.png
IMG_9674.pngIMG_9675.png



to be continued.

Sorry, I lost connection there. Here's more.
IMG_9752.pngIMG_9661.png

Something to note: When I unbent the tabs from the metal screen frame and pulled the unit away, there were some markings on the screen that seemed to have a view characters I can't recall what letters. but there were a couple vertical lines as well. based on the design I assume that is from removing the screen element I somehow either static discharged or there was some residual charge or an induced charge when I pulled the metal shield away from the display.

this was below the backlight diffusion panel
IMG_9725.png
IMG_9713.pngIMG_9714.png
IMG_9715.png
IMG_9720.png

IMG_9719.png
IMG_9718.png
IMG_9717.png
IMG_9716.png
IMG_9721.png
 

aplchndragon

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Mar 2, 2025
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4
I made an effort to verify that the numbers on the chips could be easier to search.

this was below the backlight diffusion panel
View attachment 179255
I assume this is for protection of sensitive stuff. I will investigate the substance and removal methods soon.
View attachment 179254View attachment 179253
YL260 •Ak1E (the smaller unit)
A T 1846S AP34U333 (the black chip)


View attachment 179251
HTL7G06S011P EREE0099 2323-JY





 

AK9R

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aplchndragon

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The chip under the blob is probably a semi-proprietary microcontroller that runs the radio
I thought about that too. I'll know more hopefully this weekend. spectroscopy sensor (other project) comes in soon.
Looks like HTL7G06S011P is an LDMOS power amplifier good for 11 watts up to 600 MHz:
Feature #10505: uv-5r setting tab not working in chirp - CHIRP I found this chip was also used in a bf uv-5r
This image is of the uv-5r


I haven't done a closer inspection of the circuits for the uv-5r yet

LM2904B is an op-amp. They might be using it as an audio amp
LM2904B

EC 14

A T 1846S

YL260

5807M TL153
can't find anything yet
 

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