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5 Mhz / 3.5 / 1.8 UK <> USA east coast test #opera #ros


Graham
 

5 Mhz  / 3.5  / 1.8 

Out of interest in the  week, using  one of the  kikwi web sdr's ,  and the  last version  of ros-hf-4 ,  using 50 watts  and  40 ft  vertical , with Rx just in  daylight ..I tried 3 band test  over the  'pond'  ,which highlighted  the  path was open, even down to  160 , with the  40 ft vertical  

The  modes are  self synching ,  but , must be  slight  loss  due to the  sdr&www being  in the  circuit , may be  2 db , as ros 4 should decode  past -20 

73-Graham
g0nbd



Quite good  results , first  on 80 meters dropped a  few characters  of the  'quick brown fox'  test  message 
at 50 watts .  increase to  75 watts , 100% copy 


ros screen 



Test on  160, same ae  , 100  watts  ,ros failed , no lock 

Changed to  opera  op4  as set for  160 , produced  a  spot at 
-28 db , 7 or 8 db lower than the  ros-hf-4 limit , with  50 watts 
opera beacon is a week signal mode , 

2020-10-18 21:50:53 G0NBD IO83LK G8FZKSDR FN54LE 4.760Km 1.836 -28 Op4_||_~28dB

final check on 5 ...opera 1-4-1   has a  15 chr plain text  mode ,
with  the  RX now in  darkness ,  power of 10  watts 
Moved to  5 MHz  , same 40 ft vertical  , qso mode is  fixed at 60 seconds 
3 tx recovered  100%