http://www.classeradio.org/

73 de Jim, N2EY

wrote:
http://www.classeradio.org/

73 de Jim, N2EY

Looks like the answer to emergency responder interoperable radio
communications system.

wrote

http://www.classeradio.org/

Quoted from the site:

"One of the major goals of the class E project is to facilitate the
construction, by Amateurs with only a modest background in construction, of a
high power, good sounding AM transmitter using modern, readily available
components and at a reasonable cost. "

Where was this guy back in 1935 when hams were clamoring for a "good sounding AM
transmitter" project?

73, de Hans, K0HB
--
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http://www.home.earthlink.net/~k0hb
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K=D8HB wrote:

Quoted from the site:

"One of the major goals of the class E project
is to facilitate the
construction, by Amateurs with only a modest
background in construction, of a
high power, good sounding AM transmitter using
modern, readily available
components and at a reasonable cost. "

Ain't that great?

Where was this guy back in 1935 when hams
were clamoring for a "good sounding AM
transmitter" project?

Probably the same place as you and I, Hans - hadn't even
been born yet.

Some interesting info there. Definitely not run-of-the-mill Ikensu
stuff!

Do you consider those projects to be "tinkering"?

73 de Jim, N2EY

wrote

Ain't that great?

Yes and No.

Yes because the project encourages and nurtures the spirit of experimentation in
something "different". Class E isn't your uncles old technology.

No because the project emphasizes AM, an old spectrum-hog mode which ought to
have been retired about 1965.

73, de Hans, K0HB

On Thu, 22 Sep 2005 14:50:18 GMT, "KØHB"
wrote in . net:


No because the project emphasizes AM, an old spectrum-hog mode which ought to
have been retired about 1965.


I don't hear too many pileups these days......







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K=D8HB wrote:
wrote

Ain't that great?

Yes and No.

Yes because the project encourages and nurtures the spirit of
experimentation in
something "different". Class E isn't your uncles old
technology.

I agree 100%. And it's not just Class E - there's the Class H
modulator...

No because the project emphasizes AM, an old spectrum-hog mode which ou=
ght to have been retired about 1965.

Why? AM is a legal mode, with advantages and disadvantages.

One of the key elements of the spirit of experimentation in
something "different" is not being constrained by what is
considered electropolitically correct.

Besides, the Class E technology can be adapted to a variety of modes.

73 de Jim, N2EY

wrote

No because the project emphasizes AM, an old spectrum-hog mode
which ought to have been retired about 1965.

Why? AM is a legal mode, with advantages and disadvantages.

AM is a relic, inefficient in it's use of spectrum, and inefficient in it's use
of power (only half of the transmitted power contains intelligence and half of
that half is discarded at the receiver!).

One of the key elements of the spirit of experimentation in
something "different" is not being constrained by what is
considered electropolitically correct.

I don't know WTF the phrase "electropolitically correct" is even supposed to
mean.

Besides, the Class E technology can be adapted to
a variety of modes.

Yes, it certainly can. Which makes it all the more puzzling that they'd
showcase it with a doddering old mode like AM. Class E is technologically
interesting, and kind of "electro-sexy". Showcasing it in an "AM suit" is
equivalent to showcasing Jessica Simpson in a fully secured HAZMAT suit.

Incidentally, the technology is a little older than Jessica. See "Class-E, A
New Class of High-Efficiency Tuned, Single-Ended Switching Power Amplifiers",
IEEE Journal of Solid State Circuits, Vol SC-10, June 1975, pp. 168-175.

Beep beep
de Hans, K0HB

KØHB wrote:
wrote


Ain't that great?


Yes and No.

Yes because the project encourages and nurtures the spirit of experimentation in
something "different". Class E isn't your uncles old technology.

No because the project emphasizes AM, an old spectrum-hog mode which ought to
have been retired about 1965.


Next thing ya know, someone will be building dipoles with ladder line!
;^). Then (shudder) things with tubes!!!!

Room for Morse CW, room for A.M. IMO.

- Mike KB3EIA -

KØHB wrote:
wrote


No because the project emphasizes AM, an old spectrum-hog mode
which ought to have been retired about 1965.


Why? AM is a legal mode, with advantages and disadvantages.


AM is a relic, inefficient in it's use of spectrum, and inefficient in it's use
of power (only half of the transmitted power contains intelligence and half of
that half is discarded at the receiver!).

So are SUV's. IIRC, you kinda like those!



One of the key elements of the spirit of experimentation in
something "different" is not being constrained by what is
considered electropolitically correct.


I don't know WTF the phrase "electropolitically correct" is even supposed to
mean.

I think he means that you will think it's an inefficient mode in it's
use of spectrum. and power.


Besides, the Class E technology can be adapted to
a variety of modes.


Yes, it certainly can. Which makes it all the more puzzling that they'd
showcase it with a doddering old mode like AM. Class E is technologically
interesting, and kind of "electro-sexy". Showcasing it in an "AM suit" is
equivalent to showcasing Jessica Simpson in a fully secured HAZMAT suit.

It is an easy to understand project. And I suggest that Jessica might
wear that Hazmat suit a little nicer than say, me!

Incidentally, the technology is a little older than Jessica. See "Class-E, A
New Class of High-Efficiency Tuned, Single-Ended Switching Power Amplifiers",
IEEE Journal of Solid State Circuits, Vol SC-10, June 1975, pp. 168-175.


- Mike KB3EIA -