Teardown of the AnyTone AT-5189 4m FM radio

I purchased a couple of Anytone AT-5189 4m FM radios at a flea market. As the radio is of Chinese origin I was interested in seeing how the chinese engineers is coming along regarding design, waterproofing / IP degree, PCB layout, internal shielding, component selection and general workmanship.

Summary: the radio is surprisingly well designed. A cast alu chassis is made with milled grooves for O rings, professional layed out PCB,  proper ground vias and compartmentization,  no stray cabling inside. The integrated chips used in the design are LMX1511 synthesizer, MC3311 compander, M62364 DA, KIA278 LDO, RDO7MVS18 driver. Well known integrated circuits.

Some pictures:

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  1. the chassis is very similar to a Kenwood

  2. Compre.esta radio en la banda 220mhz,y mis primeras experiencias no fueron de lo mejor,un ruido muy fuerte en la transmisión ,como que faltara tierra.la radio bebía desalineada y muy poca información para poder hacerle una reparación.

    • This radio is not a 220 MHz version, but the 70 MHz version. At least the 70 MHz version is ok for the money and for being China radio it is surprisingly well engineered (but its NOT a Motorola or even close to something designed by Western engineers…)

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