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X-Rated
03-05-2014, 03:04 PM
A new modulation? (http://electronicdesign.com/blog/new-modulation-method-really?NL=ED-03&Issue=ED-03_20140205_ED-03_514&YM_RID=radio.n9xr@gmail.com&YM_MID=1448010&sfvc4enews=42&cl=article_1)

Nice little article on a new type of modulation from MagnaCom. Pretty well is summed up in one sentence.


Even after a long briefing with the company, I still don’t know how it works.

NQ6U
03-05-2014, 03:08 PM
Hmmm, just checking...no, it's not April 1st yet.

kb2vxa
03-05-2014, 10:45 PM
WAM! BAM! Thank you m'am! It ain't no drag, papa's got a brand new bag (with marihuana in it).

"...and does not require changing antennas..."
Oh but it does, everybody knows you have to buy a new digital TV antenna because your old one no longer works.

"If these claims are real, MagnaCom will have a real success on their hands."
Considering how advertizing claims are BS lies, and deception, MagmaCum will have more cess on their hands than suc. They have that in the mouth.

Funny that. So many ways to mutilate a carrier, like the burger joints have 6,000 patented ways to make a hamburger, but it's all the same mystery meat in the middle.

X-Rated
03-06-2014, 02:05 AM
"...and does not require changing antennas..."
Oh but it does, everybody knows you have to buy a new digital TV antenna because your old one no longer works...

I remember when color tv came out and you had to buy the color tv antenna.

N2CHX
03-06-2014, 08:41 AM
"Despite the discomfort of not really knowing how WAM works, I am amazed at MagnaCom claims of amazing benefits. These include, up to 10 dB system gain advantage, up to 50% lower power, up to 400% greater distance, up to 50% spectrum savings, better noise tolerance, major increase in speed, lower cost and easier design, and 100% backward compatibility. Wow!"

Suuuurrre... Just like FM HD has the same coverage as analog.

“WAM technology is a pure digital new modulation scheme, using spectral compression that improves spectral efficiency. The spectral compression enables an increase in the signaling rate thereby affording the use of lower order alphabet, which reduces complexity. It provides inherent diversity of time and frequency domains and uses nonlinear signal shaping. The nonlinearities are handled digitally at the receiver side allowing a lower-cost and lower-power transmitter.”

Holy fuckballs, Batman. I didn't know Michael Gerson was doing technical writing now.

W2NAP
03-06-2014, 09:56 AM
Suuuurrre... Just like FM HD has the same coverage as analog.


didn't they try and say the same thing about OTA DTV?

W9JEF
03-06-2014, 10:57 AM
.




It is hard to beat QAM despite the fact that
it needs a better than average signal to noise ratio
and linear power amplifiers for reliable communications.


Hard to beat, as long as you compensate for its inadequacies. ;)


Remember there are only three basic ways a carrier
can be modulated: by varying the amplitude, frequency or phase.

Only 2 ways, really. The author doesn't seem to realize that whether
it's frequency or phase, it's the same basic angular modulation.

WØTKX
03-06-2014, 11:31 AM
And of course, the radiator of choice is the EH antenna...