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What makes a Pro code test Amateur a Troglodyte?
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October 14th 03, 04:46 AM
Len Over 21
Posts: n/a
In article ,
(N2EY)
writes:
In article ,
(Len Over 21) writes:
In article , "Kim"
writes:
"Hans K0HB" wrote in message
e.com...
"Kim" wrote
Spark transmissions were outlawed (as well they should have been) so
the precedent exists.
Hmmmm, Jim/N2EY made that observation also. Then, I see the comment that
spark was a transmission method--not a mode. I think that's splitting
hairs, isn't it? I'm asking--I wasn't around for spark
The ONLY way a "spark" transmitter could send anything called
communications information was by on-off keying.
While that's true, there were other types of transmitters on the air even
before WW1. Arc transmitters and Alexanderson alternators were two types.
Transmitters using tubes were in use well before 1920.
Irrelevant. From ALL the available literature of old-time amateur radio
prior to 1920, THE OVERWHELMING MAJORITY of amateur radio
transmitters were of the "spark" type.
"Spark" transmitters can be modulated SOLELY by ON-OFF KEYING.
The sole surviving Alexanderson Alternator VLF RF generator is in
Grimeton, Sweden, and used once each year for a brief period in a
ceremony for Televerket, the Swedish government's telecommunication
works. A ceremonial event, not one for any actual communication.
The practical transmission of voice and music by radio was demonstrated as
early as 1906.
ONLY with a rotary alternator with a WATER COOLED MICROPHONE.
Demonstration only, and then ONCE.
Since "morse code" was already in practice and was totally
on-off keying, it was adopted as The "radio code."
Was that a bad thing?
Point of fact only. Do NOT "rewrite" what I wrote.
Morse code was developed for ON-OFF KEYING...on land lines.
"Spark" transmitters could communicate ONLY by on-off keying.
Morse code was first used commercially for communications in
1844. The first demonstration of radio as a communications medium
was 1896. That is a 52 year period allowing maturing of the ON-OFF
keying of telegraphy. Telegraphy by the Morse-Vail telegraph
system had spread worldwide by 1896.
The adoption of a long-existing (since 1844) LANDLINE code
says absolutely nothing about its efficacy in radio communications,
ability to "work through" or much else.
Actually, the code used in radio is different than the code used in landline
work.
Totally irrelevant to the point. Early primitive radio could ONLY work
with an ON-OFF KEYING method.
Despite all the variant dialects of "morse codes," ALL work ONLY by
ON-OFF KEYING. ALL.
The efficacy of Morse code when applied to radio has been demonstrated many,
many times over the past century-plus. Radio amateurs continue to demonstrate
it every day.
Self-serving emotional exaggeration.
Radio amateurs worldwide continue to USE all the modes and modulations
allocated to them every day.
"Demonstration" refers to the first use of a method. That differs from USE.
On-off keying was
adopted simply because it was the ONLY WAY POSSIBLE for
early, primitive radio to allow communications. It's just
practical applied physics. Nothing else.
And it works very well.
It does NOT work optimally compared to OTHER modes.
Radio as a communications medium is 107 years old. ON-OFF
KEYING of a radio frequency carrier is NOT a new concept nor is it
the best for communications.
Even after the invention of other methods of transmission, the use of Morse
code continued.
Irrelevant. Refusal to change has many and varied reasons. Only some
of those refusals are relevant or applicable.
NO ONE is contending that ON-OFF KEYING was not the first.
Under the beginning subject thread, the subject was the CODE TEST.
You cannot explain or demonstrate or justify a reason for code test
retention JUST BECAUSE IT WAS THE FIRST MODE IN RADIO.
The first radio-as-a-communications means was 107 years ago.
All other radio services have either dropped morse code mode or
never considered its use when that radio service began.
Continued USE of morse code modes DOES NOT POSSIBLY ADVANCE
ANY STATE OF THE RADIO ARTS. In ANY radio service, including
amateur radio.
LHA
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