8 replies to this topic

[EnoSat]

Interesting plugin, it's a shame that it doesn't read data from the internal tuner, but only from the BATC websocket

OPENATV QO-100 WB Spectrum Plugin  - Hardware - AMSAT-DL Forum

GitHub - barisdinc/qo100_wb_transponder_plugin: An openATV plugin for QO-100 Wideband transponder

 wb_spectrum1.jpeg   114.82KB   2 downloads  wb_spectrum2.jpeg   121.24KB   2 downloads  wb_spectrum3.jpeg   99.68KB   2 downloads

PS: next Spectrum analyser

spectrum analyzer - chputney

 wb_spectrum4.jpg   44.31KB   2 downloads

Edited by EnoSat, 23 April 2023 - 10:23.

[littlesat]

As far I understand you need extra hardware... but when you can also select a peak and scan the frequency you git something that is much better than blindscan.

[Huevos]

You cant make a spectrum analyser out of an enigma tuner. A spectrum analyser is an analogue device. The only measurements you can get from an enigma tuner are signal quality measurements on a locked signal. For a spectrum analyser you need capable hardware.

[littlesat]

What about eg an rtl-sdr stick…. When eg you ‘tab’ the connection to the LNB…. Which can also be used for dab+

Edited by littlesat, 23 April 2023 - 13:58.

[Huevos]

What about eg an rtl-sdr stick…. When eg you ‘tab’ the connection to the LNB…. Which can also be used for dab+

Some USB tuners have spectrum, e.g. TBS5925, but it is not useful because it takes minutes to complete. My spectrum analyser does the sweep several time a second. The whole point of the spectrum is it is fast enough that can be used for aligning dishes in real time.

[EnoSat]

Blindscan basically does the same thing, it looks for unknown signals, it just doesn't display the spectrum, the tuner also uses AVC or AGC, which is actually an analog value,

the first pioneer was probably Dr.HD16
 

[Huevos]

Blindscan basically does the same thing, it looks for unknown signals, it just doesn't display the spectrum, the tuner also uses AVC or AGC, which is actually an analog value,

the first pioneer was probably Dr.HD16
 

And that is exactly my point. We can only do software tricks when the hardware is capable. Dr HD16 has capable hardware (for spectrum). And for blindscan too we need capable hardware. This is why people buy expensive modules like the TBS5925.

Edited by Huevos, 26 April 2023 - 08:33.

[EnoSat]

So Relook 400 or Cuberevo 900 had capable HW when they were rendering the spectrum years ago?

[littlesat]

With additional hardware this is indeed possible and then you can make a real quick blindscan by selecting a peek and click on a kind of investigation button

 

You need to split off the LNB with a kind of SDR radio thing and create a user interface around it....It would be a complete project.