Andy,
I now cannot see the previously seen randomness in the new 500 Hz-wide
mode of ROS, so it does not appear to be spread spectrum. In addition,
the addition of data now alters the idling carrier frequencies according
to the data, because if it did not, it would still fit one of the
requirements for spread spectrum.
The randomness does still appear in the 2250 Hz-wide mode, either in HF
or EME mode, and is not influenced by the sending of data, however,
suggesting that mode has not been changed.
I would say that the 500 Hz-wide ROS mode is probably legal for US
amateurs to use, but the 2250 Hz-wide mode would still only be legal to
use over 222 Mhz.
Perhaps Steinar can use his superior spectrum analysis software to
confirm this.
73 - Skip KH6TY
Andy obrien wrote:
---------- Forwarded message ----------
From: *ROS v2.5.0 Beta* <no-re...@wordpress.com
<mailto:no-re...@wordpress.com>>
Date: Thu, Mar 4, 2010 at 9:42 PM
Subject: [New post] NEW NARROWBAND DIGITAL MODE
To: k3uka...@gmail.com <mailto:k3uka...@gmail.com>
<http://rosmodem.wordpress.com/author/rosmodem/>
NEW NARROWBAND DIGITAL MODE
<http://rosmodem.wordpress.com/2010/03/05/new-narrowband-digital-mode/>
*José Alberto Nieto Ros
<http://rosmodem.wordpress.com/author/rosmodem/>* | 5 March, 2010 at
03:42 | Categories: Uncategorized
<http://rosmodem.wordpress.com/category/uncategorized/> | URL:
http://wp.me/pNifC-5R <http://wp.me/pNifC-5R>
I have created a new narrowband digital mode for Ham Radio operators
Technical description will be sent to FCC with the aim that they give
their approval for this new mode.
Add a comment to this post
<http://rosmodem.wordpress.com/2010/03/05/new-narrowband-digital-mode/#respond>
