Стефан в рсгб вещал про настройки для ебнаута, да выклал юср для спл.
на всякий случай, пусть будет тут. может у кого дойдут руки из числа тех у кого приличный приём.
LF: Idiot's guide to receiving Ebnaut? - Tutorial part2
OK so if your RX and PC time is stable, we can give it a try.
-You need a stereo input soundcard and feed the PPS signal to the right channel. Just run it at 48 kS/s. The PPS signal must be DC decoupled and the level must be limited to 80% of the ADC range, simply use 100nF and a resistive divider. The values will depend on your GPS module and its output level.
-Download the latest version of SpecLab and install it to the recommended folder.
-Turn the RX to 136.00000 kHz USB and use a 2.5 kHz wide SSB filter. Connect the RX to the left channel of the soundcard input.
-Download the usr file in this mail and open it into SpecLab (File -> Load settings from...)
-Click on Components -> Show Components. A box opens. In the top left corner, click on "SR cal". Another box opens. The Status must be green, showing pps peaks OK. If the level is to high, click on "scope" and see the peak form. Then you need to adjust the divider of your GPS module to reduce or increase the PPS level. The box must be green for most of the time in the end. Click to scope again, there is a pulse counter PC and an error counter EC. The error should be lower than 2 % or so, for example PC=1000 EC=16. Just let it run a few hours and see if the tracking is stable.
If you have problems in this step, tell us what the problem is.
-Wait a few hours and check if text files appear at C:\Spectrum\data After the first 40 minutes, a file should appear each 10 minutes.
-Ask someone to transmit a short EbNaut message at 1s symbols and make sure to record on this time.
So far. Then we can continue with part 3 :-)
73, Stefan
