1 Hour data qso 2330>0030 gmt , G0NBD ~ CO2DC , dial set 7055 usb using ROS .. MF-7 the new 100 (98) Hz live qso mode.
No longer can you blame qsb for getting the spelling wrong , this was a crazy qso with 99% to 100% decode at each end due to qsb , one lost sync frame (by me) . and the full char set £$%^ etc ! The catch ? web-sdr ? big power ? no , just looks like the system works , my power 20 watts carrier , CO2DC , just 1 watt later reducing to 250 mW ... (slight jingle in the noise)and 1 error ! = B . captured tx from CO2DC :- RX7: 23:51 @ 3.3 Hz: G0N!D de CO2DC ok now I am with only 1/4 w i asumme that the mistakes will incrase dramaticaly let me now if this even syncro bk <STOP> -21 dB Not bad for a ft897-d , and a 35 feet of 2 inch scafold pole home made end fed vertical (pre-amp -off noise showing 5 on the s-meter) G ,, --- In digitalradio@yahoogroups.com, Andy obrien <k3uka...@...> wrote: > > good news, nice to see this mode make good progress. > > Andy K3UK > > On Sat, May 15, 2010 at 9:53 AM, graham787 <g0...@...> wrote: > > > > > > > After a series of successful test transmissions, the latest version of > > ROS-3-6-1 (at the moment) now has the MF mode included , this allows live > > key board qso's at a data rate close to 500/8 and also has a baud-1 mode > > with enhanced s/n performance , transmission via non-linear systems is > > possible , though the logic drive of class e/d will still present problems. > > > > > > To comply with the EU 100 Hz data bandwidth of the 500Khz permits the mode > > is coded to occupy less than 100 Hz , the first custom mode to be produced > > to enable data communications with in the EU on MF > > > > The first on air qso over 200 miles is listed > > > > > http://lfistes.erst.azerttyu.net/viewtopic.php?f=17&t=1982&sid=5f68ac5172a5c1206\ > > 214df5b03c2bc50<http://lfistes.erst.azerttyu.net/viewtopic.php?f=17&t=1982&sid=5f68ac5172a5c1206214df5b03c2bc50> > > > > Scroll down the page ... and you will see the RX station F4DTL was in Paris > > 650 Km from myself running 20 watts to 35 ft top loaded vertical and round > > 325 km from Jim running 100 w to a similar array > > > > Its quite possible that the 100 Hz mode will function well over HF over the > > polar paths where psk tends to fail ? > > > > G .. > > > > > > >
