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TBS6903 Won't scan Circular

TBS6903 Won't scan Circular

Postby Youknowme02 » Thu Oct 15, 2020 9:52 am

Hello I have a TBS 6903 PCIe Card using crazy scan I can scan 10750 linear frequencies just fine. But when I try scanning a Circular 11250, crazy scan will create the graph showing signal, but NO frequencies will show in the blind. I have trying a few things nothing will work, my prof card shows the Circular 11250 with no problem, I just can't get the TBS6903 to display the frequencies, I am using 1.0.5 driver in Windows 7
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Re: TBS6903 Won't scan Circular

Postby steven » Thu Oct 15, 2020 2:53 pm

Hi sir

Can you have a try with another application check whether you are able to scan such as DVBDReam DVBViewer

Thanks

Kind Regards

steven
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Re: TBS6903 Won't scan Circular

Postby Youknowme02 » Fri Oct 16, 2020 4:15 am

I did same result, it acts like it is the driver for 6903
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Re: TBS6903 Won't scan Circular

Postby Youknowme02 » Sun Oct 25, 2020 12:09 pm

Wanted to know if anyone had a copy of V1.0.0.1 driver or V1.0.0.6 driver for TBS 6903 ? I could try?
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Re: TBS6903 Won't scan Circular

Postby DVB » Sun Nov 08, 2020 12:29 pm

1.0.0.1: https://www56.zippyshare.com/v/NywXfOcu/file.html
But I do not recommend that, 1.0.0.1 had multiple issues that were fixed in the following releases.
There's no real difference between scanning linear and circular polarization, because both are using 13V/18V to switch polarity, so no reason for not working on latest drivers. Additionally - in most cases circulat LNB's are using one band only, so 22 kHz is not needed, which is simplifying the configuration.

And the most important: LOF Frequency, no matter if 10750 or 11250, is used only for calculation purposes, really card is working between 950 and 2150 MHz (well, even a bit more). So eventual failure for LOF 11250 must be software fault, not driver and not card. So driver changes are clearly a wrong direction.

Try to use CrazyScan with L-band selected and verify with CrazyScan if any signal is coming from a LNB. If any signal will be visible, try to lock and check parameters, so it will be clear what calculation should be done, to go from IF Frequency to real frequency.
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Re: TBS6903 Won't scan Circular

Postby Youknowme02 » Mon Dec 07, 2020 9:57 am

Try to use CrazyScan with L-band selected and verify with CrazyScan if any signal is coming from a LNB. If any signal will be visible, try to lock and check parameters, so it will be clear what calculation should be done, to go from IF Frequency to real frequency.

I am not sure how to use L-band could you tell me how to use that, and to lock on using L-band thanks
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Re: TBS6903 Won't scan Circular

Postby DVB » Mon Dec 14, 2020 11:16 am

On LNB tab select L-Band and on Frequency range tab select L-band, then go Scan.
If graph is flat - signal issue.
If graph has got ups and downs - signal is present and card is able to receive it.
Select some up and double click to lock.
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Re: TBS6903 Won't scan Circular

Postby Youknowme02 » Thu Dec 17, 2020 5:12 am

LScan-1.jpg
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Re: TBS6903 Won't scan Circular

Postby Youknowme02 » Thu Dec 17, 2020 5:13 am

Here is no lock graph

LScan-2.png
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Re: TBS6903 Won't scan Circular

Postby DVB » Sun Dec 27, 2020 7:28 am

Looks fine. Which satellite you are trying to receive? What will happen, if you press Blindscan button?
Now probably getting correct configuration should resolve your issue.
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