The design is wrong, and China manufacturer knows it. It need a resistor value changed from 4.7k to 560-1000 ohms.?
toggle quoted message
Show quoted text
On Tuesday, June 13, 2023, Edouard Griffiths <
f4exb06@...> wrote:
You will not damage anything but it simply won't work. The XPA125B needs to sense less than 0.1V to switch to Tx and it seems the darlington mount on the Q900 side cannot get that low when turned on. One would need an intermediate relay which is a pain.
