Reellgi

there is a 1Mohm resistor near the 14069...maybe is one stage used as amplifier?

you were right! two sn76604 and one 14069, so is full proportional? What was the hex inverter used for?

finally found a photo. But if the model is full function type, why is there a potentiometer on the steering? Usually, at least in the small models, the neutral position is obtained with a spring and no signal in the steering motor. It looks like a servo.

ok, thanks for explanation!

Hi, anyone got this model, or similar like Porsche 930 or 924 from '80s? I need some photos of pcb or info about electronic boards. Many thanks https://www.tamiyaclub.com/showroom_model.asp?cid=128046&id=15762