Posts by PA3AOD

Hi Nicolas,

I can say nothing about your 30 dB signal-to-noise ratio

But keep in mind that the Goonhilly SDR uses a much bigger antenna, 1.3Meter.

73,

Bert

Danke Matthias,

This is my modified LNB.

For the whole construction LNB/sat-dish see my homepage

https://www.pa3aod.nl/HamRadio/Satellite%20Dish/index.html

73,

Bert

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

73,

Bert

Peter, vielen Dank für die Information.

Hallo,

Nur aus Neugier.

Warum wurde für den DATV-Modus eine Frequenz von 833 MHz ausgewählt?

73,

Bert

Indeed the "lastqrg" is the problem.

Did put a newly downloaded "Raspbian Buster Lite" on the sd-card installed everything again with the same result.

( The ./build_RTLSDR works perfectly i did it after the ./build_SDRplay error.)

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

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

73,

Bert

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.

73,

Bert

New pictures I had never seen this before.

With good reception.

73,

Bert

The best SSTV picture from the ISS today

73 Bert

DB8TF Your service is perfect, many thanks.

The RF-Power meter is working as i hoped, see photo.

@ DB8TF thanks in advance .

DB8TF Thanks for the sw update, i can now read the data into my Raspberry-Pi. One question remains, how can i fix the ATT settings. I have a 30dB coupler but after every reboot of the Nano the ATT setting jumps back 60dB and my 30dB setting is lost.

73,

Bert

DB8TF

Will the software from your 2.4GHz Power Meter be extended (or is it already somehow available) so that the values in dB and/or Watt will also be available at the serial port.

(Any way your 2.4GHz power meter is working fine.)

73

Bert

IZ4RYB So your setup is now like this:

Pluto on 2.4Ghz -> Broadband amp (SPF5187 ? ) -> SKY66292-11 ->Sg Lab 20w -> 500w Ampleon PA.

73,

Bert

My first picture from this session.

73 ,

Bert

Hallo Kurt,

Können beide Wb und Nb nicht auf einen (Odroid) rechner laufen?

Oder ist das zu viel für einen rechner.

73

Bert

should be like this...http://www.hb9ryz.ch then it works..

I bought the same filter as mentioned by DH2VA see #1 for a picture of it.

Did some measurements, see plot.

M1 and M2 are the -3dB points

73

Bert

How can i change the power output of my Pluto with the F5OEO update/change software in DVB mode?

With the DATV-Express software there was a sliderbar for tx power.

73,

Bert