I'm not sure I understand the point of this. True "state of the art" can
become hideously expensive. Somewhere, there has to be some give.
Yes, some of the current and many of the past transmitters are absolute
dogs. But, they weren't state of the art even in their day. With SDR we
can introduce predistortion for SSB to minimize IMD. Phase noise has
been a bane since PLLs were introduced. I suppose that "state of the
art" signal purity could be crystals. If the rules are interpreted that
way (unlikely), we couldn't use any variable frequency source until its
spectrum was as pure as a good crystal oscillator. As for CW BW, that's
been understood for quite a while and ways to deal with it have been
around a long time. Technically, any transmitter that has a broad CW BW
is in violation and subject to sanction. The list goes on for a while,
e.g., RTTY BW.
I don't believe that the FCC ever intended to enforce true
"state-of-the-art" because very few can afford it. How much flexibility
should be allowed is a better question and that is inevitably converted
to a number somewhere by someone. Literal "state-of-the-art" is
unattainable by most.
Kim N5OP
On 12/9/2015 7:19 PM, Jim Brown wrote:
On Wed,12/9/2015 4:34 PM, terry foskey via TenTec wrote:
Jim,I am in engineering, questioning why and developing designs,
it's what I do. I have commercial and Amateur licenses. The rule you
provide for Ham operations is true, however, the passage can be
interpreted many ways and I stand my statement there is no specific
rule being violated.
It is, but you're looking for a number. The rule is written so that
the "number" is dictated by the state of the art. It allows the Rules
to progress with developments in ham radio manufacturing. I serve on
an international standards committee, and we have written Standards in
exactly that way, and for that exact reason.
Elecraft has set the state of the art with an expensive rig, Kenwood
has further defined it with a moderately priced rig. I would thus
define what Kenwood has done as "the state of the art" for the masses.
--
Kim Elmore, Ph.D. (Adj. Assoc. Prof., OU School of Meteorology, CCM, PP
SEL/MEL/Glider, N5OP, 2nd Class Radiotelegraph, GROL)
/"In theory there is no difference between theory and practice. But, in
practice, there is." //– Attributed to many people; it’s so true that it
doesn’t matter who said it./
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