F5OEO / rpitx

RF transmitter for Raspberry Pi
GNU General Public License v3.0
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Fix dvbrf and add it to the makefile #315

Closed Inconspicuous-person closed 4 months ago

Inconspicuous-person commented 5 months ago

Fixed dvbs by changing the number of phases from 4 to 8 (It still uses qpsk). It seems the the number of phases gets divided by 2 somewhere in the modulation process. Now working with dvb-s and dvb-s2.

F5OEO commented 4 months ago

For now, DVBS and DVBS2 is working. Checked with dvbs2 receiver (hardware and software). Some no trivial calculation occurs : frequency set is divided but the number of phases. You need to set a harmonic set to work : sudo ./dvbrf -i f9zg.ts -s 333000 -c 3/4 -f 437e6 -l -n 5 -m dvbs , gives a 437Mhz /333 KS symbolrate using 5th harmonic (437/5). Using 2x phase as request seems not relevant