I have a question.QO - 100 broadband repeater (direction) of the beam control ability, because in my QTH, didn't see 10492.5 wb beacon.Whether I use MiniTioune or sdr#, failed to see any signal.The transponder noise.
QO - 100 WB repeater for beam (direction) control?
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BG0AUB I did the following:
LNB to horizontal 12V feeded with a bias-T so there is no voltage going to SDR or minitiouner. In front of the bias-T is a simple sat splitter..One output to minitiouner the other to sdr rx. Then look with this setup (12V) to the best s/n for the NB.. this will also be the best s/n for the WB..I do not switch to Vertical, because the noise is more on NB and so I can avoid an attenuator for the sdr..
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forgive. The TV-SAT standard provides 12 Volts for Vertical polarization and 18 Volts for Horizontal polarization.
0 Hz for the low band (LO - 9750 Typ) and 22 kHz for the high band (LO - 10600 MHz Typ)
The NB transponder of QO-100 has Vertical polarization (12 Volts to LNB)
The WB transponder has horizontal polarization (18 Volts to LNB)
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I8LYL former I0LYL yes Lucio you are right.
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Maybe I made a stupid mistake..
Set up the SR = 2000
Should be set to the SR = 0200 2 m code rate
Maybe next weekend to test.Ah... -
In fact, if you put Offset -> - 09750000 or the value of your LO then you can directly enter the transponder frequency and not the conversion one.
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Just correct your LO if needed.. There is no changes in the ini file needed for get this running.. Ini changes only for call sign.. Preferences and so on..
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I tried to receive WB beacon again today, but still failed. My position antenna elevation Angle is 18 degrees.S/N MER is 1-2 at its highest. I really missed it.But you can have a pleasant QSO in NB mode.The uplink WB mode was tested.The 250k code rate can be seen on websd-wb that my signal is only 2-3db.
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Carefully adjust the LNB focus and polarization Angle.Received video and HAM video.90 cm
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I made it.BG0AUB QO100 DATV QPSK 1/2 10496.625 125k thank from M0SKM signal report.
Now I use is the circular polarization feed narrowband communications.How to make a line polarization feed for DATV launch?Who can help me...
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Is my wrong.WB repeater uplink is still RHCP
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I made it.BG0AUB QO100 DATV QPSK 1/2 10496.625 125k thank from M0SKM signal report.
Now I use is the circular polarization feed narrowband communications.How to make a line polarization feed for DATV launch?Who can help me...
Zhao Feng,
the RHCP polarization is right, WB and NB trasnponders have the same polarizzation, but keep in mind that the feeder must be LHCP, due to "mirror" effect of the dish that change polarization. Furthermore if you are using a helix feed, this can be user for both transponders, but it's clear that when you transmitting on WB, you cannot do the same on NB, and viceversa (but if you have two TX dish, yes).
I hope having understood your request.
Congratulations for your's operation from China.
Regards an 73.
Alex
