Often jobs are listed that I would characterize as "saviour" positions.
The salaries offereed are huge, the benefits unbelivable.
Then, when you interview for the job, you realize what the scam is: the position is impossible, the responsibilities unreal, the requirements unachievable. You just need to perform regular miracles, and walk on water.
That way, the CEO, CTO, (whatever) can go back to the board and say: "look, we hired the absolute best, and paid top dollar (euro, yen, etc.), and they failed!"
They are absolved of their incompetence, and the person hired takes the fall as not being up to the challenge (the job was impossible, even for the 'best" they could hire, but maybe he wasn't all that good, anyway).
Those that take these positions know perfectly well what is going on, and play the game as required (pocketing everything they can) all the while looking for their next job.
For me, that is not why I walk in the door everyday. My older brother, Ron Lesea (now deceased) once said: "Ausitn, if you don't feel like walking in the door in the morning, don't."
Best advice I ever received.
So, the answer to the question, is that any salary from "work for worthless stock" to astronomical salaries, are possible. The real question is: what are you looking for?
If it is the median salary, just consult an IEEE salary survey for the region you are interested in, or go to the many other surveys that are out there.
PhD is also a bit an issue in Electronics Engineering. What is it they want? A person who can do independent research? A manager of technical wizardry and magic? A figure-head to fly out to important customers so as to impress? To keep that person out of the hands of their competition?
What is it that a PhD knows, that a well seasoned engineer with a bacheleor's degree doesn't know?
They say a bacheleor's degree means you know the subject, and can do work in that subject. A Master's means just that, you have mastered the subject and can lead work in that area. A PhD means you are able to do original work in that area (as well as what the other two degrees can do).
Of course, after a while, a bacheleor's degree engineer, or a master's degree engineer is just as likely to file for patents (evidence of original work) as the PhD.
As proof of on the job training and experience, I offer you another interesting tidbit: after 7 years of marriage, wifes (and husbands) test the same as their spouse on intelligence tests. So you see, marrying a stupid woman (or man) is a disaster waiting to happen: they will become just as clever as you are (and they won't be very happy when they realize what the criteria was originally).