Uzytkownik "K1TTT" napisal w wiadomosci
...
On Dec 21, 6:14 pm, "Szczepan Bialek" wrote:

Szczepan Bialek wrote:
"Well, it's like this. The story starts in 1915, when mankind
discovered
sidebands. Now possessing this superior understanding of the AM signal,
radio scientists began to understand the implications of their
discovery.
Soon afterwards, our old friends at Bell Labs, who have discovered
practically everything, developed a method for removing one of the
sidebands
of an AM signal but retaining all the essential modulation components.
As
an
expert of that day supposedly said, "both sidebands are saying the same
thing" (Goodman, 1948). " From:
http://www.hamradiomarket.com/articles/SSBHistory.htm

I was born after 1915. I am supposing that in that time was possibility
to
tune to the three different frequences.
Am I right?


Here are the unrestricted signal (upper diagram). It has the three peaks:
http://en.wikipedia.org/wiki/File:Pa...schematic3.png

So in an old radio the same station was in the three places (on the
scale)
close to one another.
Am I right?

no

Now my radio use FM. The one station is on the distance circle 1cm.
In 1915 was the same for AM?
S*