Skip to main content

Disassembly of Baofeng UV-5R

I was able to see if I could control the frequency of the UV-5R.
How? Open the Cover and look!




if you want to completely disassembled the UV-5R, you will have to find the hidden screw under the LCD.




The MCU ( MB95F013K) shown in the picture below is the main controller of the transceiver.



and The RF Controller (Left chip marked - 1846 - RDA1846) shwon in the picture covers VHF and UHF.

http://www.radiomanual.info/schemi/Vari/Baofeng_UV-3R_RDA-1846_prog.pdf

VHF :  134~174MHz, 200~260MHz (but, only 134~174 VHF present on UV-5R)
UHF : 400~520MHz




RDA1846 has as 24Mhz oscillator connected,


if you replaced other frequency osclillator, perhap the frequency ramge pf use of the radio will change.

https://qrzcq.com/pub/RADIO_MANUALS/BAOFENG/Baofeng--UV-5R-Schematic.pdf
Components such as filters due to frequency changes will have to change together.






Label:

Comments

Post a Comment

Popular posts from this blog

Introduction to UV-K5 HF 0.5 (Fullband receive version)

 Introduction to UV-K5 HF 0.5 (Fullband receive version) This is an introduction to UV-K5 HF full-band reception firmware 0.4HF using SI4732-A10. This version is released separately from the existing UV-K5 CEC firmware version. because space is needed to store a large PATCH file to use SI4732-A10's SSB. This article only describes the features newly added in Version 0.5. Please check the links below for full features. How to modify your hardware http://www.hamskey.com/2024/02/uv-k5s-hf-full-band-reception-lsb-usb.html Version 0.3HF (Most feature descriptions are provided) http://www.hamskey.com/2024/02/introduction-to-uv-k5-hf-fullband.html Version 0.41HF (Description of Band plan function and Dual RX function) http://www.hamskey.com/2024/03/introduction-to-uv-k5-hf-fullband.html
96 comments
Read more

Release DVPI Version 1.03 (scirpt update)

 Release DVPI Version 1.03 There have been some changes to the DMR node recently. This version changes only those related to the recently changed DMR node. If you normally use Version 1.0 or Version 0.95, no upgrade is required. DVPi uses the USRP Client protocol.  When you install and use DVSwitch, you must read and comply with the license that appears. The user is responsible for the license for the use of DVPi.
118 comments
Read more

C-BOARD (DSP-Board) for UV-K5 (Updated June 9, 2024)

  C-BOARD for UV-K5 I created an externally mountable DSP-Board to process digital signals from UV-K5. DSP-Board was named C-Board. C-Board is divided into versions ranging from the simplest version to one that can be equipped with GPS.
109 comments
Read more