Hardware_Mods.md

1. Sound

1. violet ⇅ 1nF (Part 526)
   
2. red ⇅ 1µF (Part 528)

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who did it?
Matteo?
BK7IKD

YT-Video "Quansheng uv-k5 - audio Hi-Cut (1nF capacitor) hardware mod. AirBand test." from Andrzej Kuczwara

2. Add possiblity to use USB-PD-Cable (USB-C-to-USB-C)
or USB-A-to-USB-C-Cable

Insert 2 resistors of 5.1 kΩ each from ground to the CC pins (A5 / B5). This hack requires a good eye and good nerves ;-)
Wiring the two configuration pins CC with 5.1kΩ resistor signals the PD charger that it can apply 5V.
Without this resistor-combination, no voltage is applied.

USB-C Port												USB-C
Soldersite	GND	Vbus	CC	SBU	bD-	aD+	aD-	bD+	CC	SBU	Vbus	GND
	▮ ▮	▮ ▮	▮	▮	▮	▮	▮	▮	▮	▮	▮ ▮	▮ ▮
	┃		┃						┃
	┃		5,1kΩ						5,1kΩ
	┃		┃						┃
	┗	━	┻	━━	━	━	━	━	┛

↧↥ ⇅