I found an interesting DIY satellite measuring instrument DVB-S,
DVB-S2, including the spectrum analyzer Sat-Finder SFA-2007.
DVB-S2, including the spectrum analyzer Sat-Finder SFA-2007.
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Current features: Bands: - Ku- Lo-Band (L.O. 9750MHz, 22kHz off), - Ku- Hi-Band (L.O. 10600MHz, 22kHz on), - Ku- Hi-Band (L.O. 10750MHz, 22kHz on), - C-Band (L.O. 5150MHz, 22kHz off) Polarizations: Vertical/Right (12.8-13.6V) Horizontal/Left (17.5-18.5V) Spectrum's visible area width: 176MHz Grid step (x-axis): 8MHz Frequency adjustment step: dynamic, 1.0 to 10MHz (buttons "*", "#") Refresh rate: about 11fps Logarithmic (pseudo) level scale on color screen Level bar with peak-level feature 22kHz-tone presence displaying DiSEqC 1.0 (4 ports) / DiSEqC 1.1 (8 ports) control Frequency labels in four colors for: DVB-S - yellow label DVB-S2 - red label feed (any type) - gray label Undefined - blue label 19 satellites in memory (see the satlist) Sound beeper, audio frequency depends on signal level (beeper will be turned off after a short circuit of LNB power) LNB's power on/off displaying LNB's voltage displaying Battery indicator Short circuit protection (resettable fuse and by software interrupt) with displaying of the fact Power supply: 4.5-5.5V, 1A max RS-232 control (uploading data etc.) with displaying of interface activity Firmware is free (after request) The features is a subject for the expanding and altering step by step.
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