Jerry Stuckle wrote:
And I'm more and more astonished that you seem to know my business
better than I do.

I certainly do! Your claims are all hogwash. Either you did not know
your (technical) business when you were in it, or you have forgotten
everything now that you are out of it for decades.


No, you know NOTHING about my job, the people I employ or their
technical expertise. You think EVERYONE IN THE WORLD is as smart as you
are. But here's a clue - the VAST MAJORITY OF THE WORLD is SMARTER THAN
YOU.

I never doubt that!
But I am sure I know more about it than you!
And so do many others here.
It is you that is *thinking* he has a lot of knowledge, but knows
absolutely no facts. Not that this is required to employ people, just
make sure you never toucht the stuff yourself!

You have no idea about what orders of magnitude are involved.
For example: a picowatt is about 8.6uV in 75 ohms. An FM receiver
will give a clear signal on that. Not full quieting, but certainly
receivable.


I know EXACTLY what a picowatt is. And I also know what portable
receivers are capable of. Sure, if you feed a picowatt directly into
the front end of a receiver, a good receiver will hear the signal. But
what field strength do you need at the antenna for a portable FM
receiver to hear that signal? And most of your inexpensive portable
receivers will not hear much of a signal (if at all), even if you do
feed a picowatt directly into the front end (not that you can without
major surgery on the receiver).

It was you that was coming up with picowatts when others suggested
nanowatts. That tells enough, doesn't it?

Unlicensed transmitters for dedicated frequencies like 433MHz (wireless
headphones and the like) are about 10mW, and for broadcast bands
(e.g. to link an MP3 player to a radio) they are even less. E.g. in
the FM broadcast band the limit in the EU for such a transmitter is 50nW
effective radiated power. That still allows for a 30dB path attennuation
for a usable signal on the receiver.

Sure, but you're also talking a 5Khz deviation (actually about 12Khz
bandwidth). Commercial FM uses 75Khz deviation (typically around 180Khz
bandwidth). A huge difference.

No, not at all. It is the EU regulation for unlicensed devices operating
in the 100 MHz broadcast band that they must not emit more than 50nW.

Now I'm sure that in America everything is bigger and the rules are better
(not the receivers, apparently), but you are not going to convince me that
the same equipment in America emits 100-500mW. That is just ignorance
on your side.

But as you are used to jumbling up your dBm and dBmV values, you have
no idea about that. Your business was probably connecting ready-made
equipment, and selling. But certainly not testing and debugging, that
is clear.


No, i am not used to jumbling them up. You just have no idea what my
industry uses for measurements.

Oh yes I do! dBm, meaning dB over a milliwatt.
And in the cable industry, dBuV, meaning dB over a microvolt.

In America, where everything is bigger, probably dB over a millivolt,
but not expressed as dBm!

IOW, a typical troll - thinks he knows it all when he knows absolutely
nothing.

That's you, I take?