Posts by PA3AOD

    Hi all,

    To expand the question from Trevor.

    Is there maybe a list with (roughly) indications for the SNR what we can expect for a particular antenna size?



    Hallo Markus

    Habe auch den TS2000 (seit mehr als 15 jahre), aber Leistungsspitzen habe ich noch nicht bemerkt (oder von gehört / gelesen).

    Der 13cm SG-Lab Transverter ist eine schönes product aber leider nur eien IF (432MHz) fur rx und tx.

    So kann man nicht full duplex arbeiten und der TS 2000 in SAT mode gebruachen, that's a pity.

    Ich arbeite mit dem amsat.dl downconverter (das erste modell) auf 144MHz und ein homemade Upconverter mit IF auf 23cm in SAT mode.

    Hi all,

    Just installed a new dish-antenna, prime focus 180cm.

    The beacon give me a MER of 11.4 on this moment.

    Now is my question is this a good value for my dish-antenna?

    I have no reference so no way to check that number.

    But what is MER, how is that calculated?

    Means 3dB MER more also double the power, same as by a HF-amplifier



    dj0abr Kurt can you give me a clue on this error

    ( The ./build_RTLSDR works perfect and a nice WebSDR in my browser, but with the ./build_SDRplay it is generating a error )

    root@WebSDR:~/QO-100_SSB-WebSDR_DATV-WebSpectrum# ./build_SDRplay

    rm -f *.o websocket/*.o qo100websdr

    cc -O3 -Wall -I./websocket -DSDR_PLAY -std=gnu99 -DESHAIL2 -c qo100websdr.c -o qo100websdr.o

    cc -O3 -Wall -I./websocket -DSDR_PLAY -std=gnu99 -DESHAIL2 -c sdrplay.c -o sdrplay.o

    cc -O3 -Wall -I./websocket -DSDR_PLAY -std=gnu99 -DESHAIL2 -c fir_table_calc.c -o fir_table_calc.o

    cc -O3 -Wall -I./websocket -DSDR_PLAY -std=gnu99 -DESHAIL2 -c wf_univ.c -o wf_univ.o

    cc -O3 -Wall -I./websocket -DSDR_PLAY -std=gnu99 -DESHAIL2 -c websocket/websocketserver.c -o websocket/websocketserver.o

    cc -O3 -Wall -I./websocket -DSDR_PLAY -std=gnu99 -DESHAIL2 -c websocket/ws_callbacks.c -o websocket/ws_callbacks.o

    cc -O3 -Wall -I./websocket -DSDR_PLAY -std=gnu99 -DESHAIL2 -c websocket/base64.c -o websocket/base64.o

    cc -O3 -Wall -I./websocket -DSDR_PLAY -std=gnu99 -DESHAIL2 -c websocket/sha1.c -o websocket/sha1.o

    cc -O3 -Wall -I./websocket -DSDR_PLAY -std=gnu99 -DESHAIL2 -c websocket/ws.c -o websocket/ws.o

    cc -O3 -Wall -I./websocket -DSDR_PLAY -std=gnu99 -DESHAIL2 -c websocket/handshake.c -o websocket/handshake.o

    cc -O3 -Wall -I./websocket -DSDR_PLAY -std=gnu99 -DESHAIL2 -c audio.c -o audio.o

    cc -O3 -Wall -I./websocket -DSDR_PLAY -std=gnu99 -DESHAIL2 -c setqrg.c -o setqrg.o

    cc -O3 -Wall -I./websocket -DSDR_PLAY -std=gnu99 -DESHAIL2 -c rtlsdr.c -o rtlsdr.o

    cc -O3 -Wall -I./websocket -DSDR_PLAY -std=gnu99 -DESHAIL2 -c timing.c -o timing.o

    cc -O3 -Wall -I./websocket -DSDR_PLAY -std=gnu99 -DESHAIL2 -c fifo.c -o fifo.o

    cc -O3 -Wall -I./websocket -DSDR_PLAY -std=gnu99 -DESHAIL2 -c ssbfft.c -o ssbfft.o

    cc -O3 -Wall -I./websocket -DSDR_PLAY -std=gnu99 -DESHAIL2 -c cat.c -o cat.o

    cc -O3 -Wall -I./websocket -DSDR_PLAY -std=gnu99 -DESHAIL2 -c civ.c -o civ.o

    cc -O3 -Wall -I./websocket -DSDR_PLAY -std=gnu99 -DESHAIL2 -c wb_fft.c -o wb_fft.o

    cc -O3 -Wall -I./websocket -DSDR_PLAY -std=gnu99 -DESHAIL2 -c ssbdemod.c -o ssbdemod.o

    cc -O3 -Wall -I./websocket -DSDR_PLAY -std=gnu99 -DESHAIL2 -c setup.c -o setup.o

    cc -O3 -Wall -I./websocket -DSDR_PLAY -std=gnu99 -DESHAIL2 -c beaconlock.c -o beaconlock.o

    cc -g -o qo100websdr qo100websdr.o sdrplay.o fir_table_calc.o wf_univ.o websocket/websocketserver.o websocket/ws_callbacks.o websocket/base64.o websocket/sha1.o websocket/ws.o websocket/handshake.o audio.o setqrg.o rtlsdr.o timing.o fifo.o ssbfft.o cat.o civ.o wb_fft.o ssbdemod.o setup.o beaconlock.o -lpthread -lm -lmirsdrapi-rsp -lfftw3 -lfftw3_threads -lsndfile -lasound -lrtlsdr

    /usr/bin/ld: rtlsdr.o:(.bss+0x8): multiple definition of `lastsdrqrg'; sdrplay.o:(.bss+0x28): first defined here

    collect2: error: ld returned 1 exit status

    make: *** [Makefile:14: qo100websdr] Error 1




    DB2OS, or some else who can give a answer.

    The question may not belong here but I was curious.

    What kind of equipment is used for the NB / WB uplink transmitter probably not a Pluto and/or Portsdown......

    Or is there a link with more info about the used equipment/antenna used power and so on.