Originally Posted by FPVistanbul
Why do you want a regulator device from 4.2V to 3.3V? Our 5.8gHz 200mw Tx module works with 3.3V - 4.2V directly. No need a step-down regulator for it.
Because I found the unit for 15 dollars new (shipped), vs. your cost of $39. So i am looking to make the modification myself.