Andy,
I have been told by a FCC engineer, part of the evaluation group at the
FCC, whom I will not name, that ROS 16 baud and 1 baud has been
evaluated in the lab and is spread-spectrum and therefore illegal on
HF, not only because the author first said it was spread spectrum and
then changed his story.
Anyone with DigiPan or any other PSK31 program with a waterfall can
verify that the frequency spreading is random and not a function of the
data, which is the signature of spread-spectrum.
Just because someone feels it is not spread spectrum does not excuse
them from following the regulations and those who do not risk the chance
of FCC action against them once someone files a complaint.
There is no reason for the FCC to reconsider their decision, since it
is based on analysis as well as the author's declaration. What can be
done is to submit a petition to the FCC to allow limited bandwidth
spread spectrum on HF by showing it is not harmful to other users of the
bands. The instructions for submitting a petition are available on the
FCC website.
Radio amateurs are responsible for following the regulations, not just
interpreting them as they see fit.
ROS is legal above 222 Mhz, so freely use it there if you wish. It is
probably really good for EME.
73, Skip KH6TY
On 7/12/2010 6:55 AM, Andy obrien wrote:
For those USA hams that are using ROS on HF, I assume that by using
it...they feel it is not spread spectrum and thus should be legal. Is
there any movement towards petitioning the FCC to reconsider the
unofficial comments by them and obtaining statements that it is legal
? Or has everyone agreed it IS spread spectrum and given up on it
becoming legal in the USA ?
Andy K3UK
