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Re: JT9 on 6 meters

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  • booz2m
    Hi Julia and the group Well, what do you mean with short? The challenge is that short lifts are often subject to path distortions like Doppler or
    Message 1 of 6 , May 16, 2013
      Hi Julia and the group

      Well, what do you mean with "short?" The challenge is that "short lifts" are often subject to path distortions like Doppler or multi-path. Indeed it would be nice with a short, fast, sensitive, narrow and robust mode :-)

      This being said you may want to try to listen for OZ7IGY on 50,471 MHz: www.rudius.net/oz7igy It is a beacon running a mixed mode signal (PI4 + CW ID + carrier).

      PI4 takes less than 25 s. It is, however, not a one-to-one communication protocol but a modified JT4 for beacon purposes. But it will give you an idea about the possibilities with a faster mode than JT9/WSPR and a bit faster than JT4 with the inherited penalties.

      TO decode PI4 you can use PI-RX: www.rudius.net/oz2m/software/pi-rx

      To read more about PI4 go here: http://rudius.net/oz2m/ngnb/pi4.htm PI4 has been decoded via aurora! Rain scatter remains though.

      73
      Bo, OZ2M
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