Test of ROS 100 Mf Mode tonight
Thanks to all who supplied information of there respective 500 KHz
permitted transmission
bandwidth.
After some negotiation , Jose has coded a 100 Hz of his ROS data software , this now gives the system an
?MF? mode
operating inside the 100 Hz licence conditions
The 7 baud mode is a live keyboard mode , being fast enough to maintain a reasonable qso speed , with selectable afc range
The 1 baud mode is perhaps more of
a beacon mode , but offers enhanced performance and is perhaps a contender to the conventional QRS/S modes
Transmission of
the mode requires the traditional audio to
rf translation , but as it?s
a single carrier system , non linear amplification
systems may be deployed.
This is the first custom built data mode resulting from the interest and participation of monitoring and active stations , of a transmission system experiment undertaken on 500Khz facilitated by the OFCOM issued UK experimental research permit
The software may be freely downloaded from http://rosmodem.wordpress.com/
TX / RX set ::: 502.000 KHz USB
Carrier centre frequency
will be 503.000 KHz +/-
49 Hz
Many thanks' to all
Graham
G0NBD
