5 Jan 2013

First JT9-1 QSO on 472kHz

This afternoon I had my first digital 2-way QSO on the new 472kHz band using JT9-1 mode created by K1JT. The contact was with G3ZJO in IO92. Solid -15dB S/N reports were exchanged. I am still getting to grips with the JT mode procedure.
QRP JT9-1 QSO with G3ZJO today on the 472kHz band
 I also tried to work G3KEV on CW but he was unable to hear my QRP signal. I will try for more JT9-1 QSOs over the weekend.
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4 comments:

  1. AnonymousSat Jan 05, 08:13:00 pm GMT

    Hi Roger,
    What do you recommend as dial frequency for jt9 ? Maybe I'll try jt9 on 472.
    Thanks, 73, Ron,, PA2RF

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  2. Roger G3XBMSat Jan 05, 08:21:00 pm GMT

    Ron, I set the same USB dial as for WSPR (474.2MHz) and operated just below the WSPR window i.e. around 1300Hz nominal.

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  3. AnonymousSat Jan 05, 08:33:00 pm GMT

    Tnx for the quick reply Roger.
    By the way my qrpp wspr signal on 472khz reached 21 stations last week. Unfortunately no path between our stations (yet). I use a similar transverter as you with IRF510 and TFM2 mixer. Use fence in garden as ground and about 10 meters of wire as antenna. No more space :-(. 73 Ron PA2RF

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  4. AnonymousSat Jan 05, 09:39:00 pm GMT

    Thanks for your quick reply. Will install JT-9 on short term to see what's possible. This weak my wspr qrpp 474 kHz sig was heard at 21 stations. Not bad for a transverter similar to yours (IRF510 with tfm-2 mixer). Antenna 10m wire and fence in garden serves as ground. 73 Ron PA2RF

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