Hello Graham, Hello Jim, LF;<= /span>

I received just now a part of the QSO (M= 0BMU / G0NBD) in ROS 100 MF Mode.

SNR is about -17 dB, weakly audible here in JN59LN.

Later on I will try to copy also the mes= sage from G0NDB, condx are not too good this evening..

73 de Gerhard // DK6NI //&nb= sp; JN59LN

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=

RX7: <21:43 UTC> <23,4 Hz> G0NBD de M0BMU ge Graham tnx for call you ae are currently at SNR of about -16d= B here with usual QSB. Ur sig is weakly audible most of the time, fading out duringetQ QSB, but= solid c .y so far. Quiteexlot RN ot on the band tonight. Running about 100W or theoexuts... the antenna is not quite properly tuned I I ae see... so= BTU Graham G0NBD de oBMU kkk <STOP> <-17 dB>

Von: owner-rsgb_lf_group@black= sheep.org [mailto:owner-r= sgb_lf_group@blacksheep.org] Im Auftrag von Graham
Gesendet: Freitag, 14.= Mai 2010 22:32
An: rsgb_lf_group@blacksheep.org
Betreff: LF: Test of RO= S 100 Mf Mode tonight

Beacon now back to 20 watts= / 60 second prf

ROS - 100 Hz MF mode= 7

Dial set 502.000 usb / = ;RX is ON , (mode 7 & 1 )

QRZ de G0NBD =

From: Graham

Sent: Friday, May 14, 2010 7:29 PM

To: rsgb_= lf_group@blacksheep.org

Subject:<= span style=3D'font-size:10.0pt;font-family:Tahoma'> Re: LF: Test of ROS 100 Mf Mode tonight

Beacon running at 190 mW&nb= sp; feed to the Ae , qsl from Lee , showing good&nbs= p; copy over 75 miles , over a 310 Mtr = ; ridge in the process

M0LMH has received your Radio Message sent at= : 18:20 UTC ( moon is miss decoded)

Received Message: 'the quick brown fox jumps over the lazey ofon 12345= 67890 G0NBD testing 0.19 w <g0nb= d@hotmail.com> <STOP>'

Thanks for reports Le= e

G ..

From: Graham

Sent: Friday, May 14, 2010 1:18 PM

To: rsgb_= lf_group@blacksheep.org

Subject:<= span style=3D'font-size:10.0pt;font-family:Tahoma'> LF: Test of ROS 100 Mf Mode tonight

From: G ..

Sent: Friday, May 14, 2010 1:17 PM

To: rsgb_lf_group@blacksheep.org

Subject:<= span style=3D'font-size:10.0pt;font-family:Tahoma'> Test of ROS 100 Mf Mode tonight

Test of ROS 100 Mf Mode tonight

Thanks to all who&nbs= p; supplied information of there respective 500 KHz permitted transmis= sion bandwidth.

After some negotiation ,&nb= sp; Jose has coded a 100 Hz of his ROS dat= a software , this now gives the system an &= nbsp; ‘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 qs= o speed , with selectable afc range

The 1 baud mode is pe= rhaps more of a beacon mode , but offers enhan= ced performance and is perhaps a contender to the conventional QRS/S modes

Transmission of the mode&nb= sp; requires the traditional audio to rf translation= , but as it’s a single carrier system , non linear ampl= ification systems may be deployed.

This is the first cus= tom built data mode resulting from the interest an= d participation of monitoring and active stations ,&nb= sp; of a transmission system experiment undertaken on 500Khz facilitated by = ; the OFCOM issued UK experimental research permit

The software may be&n= bsp; freely downloaded from http://rosmodem.wordpress= .com/

TX / RX set ::: = 502.000 KHz USB

Carrier centre frequency &nb= sp; will be 503.000 KHz +/- 49 Hz

Many thanks' to all<= /span>

Graham<= /o:p>

G0NBD