Posts by OE3GBB

Hi Ed,

I only could find a source for the small PA:

https://www.passion-radio.com/…qo-100/ern-mh01-1097.html

Maybe they know how to get the big one.

No price advertized.

73 Gerhard

I am still asking for a solution for my bricked box. I can connect by telnet, but the user and PW information is apperently different. Does anyone know how to connect by telnet and flash a new firmware?

Vielleicht das Cache des Browsers löschen?

Hi,

Did you follow the recent work of David Rowe on Data modes?
http://www.rowetel.com/?p=7665

Cheers

On the terminal connection I get contiuously ....aUaUaU.... with some background sound on the speaker. It is very hard to tune the RX to the correct position. It seems that the transmitted audio is repeated somehow.

Hi George,

I tried this version with same settings, but had problems to decode the audio. I only managed to get a decoding for short time and with breaks. Audio quality doesn't seem to be improved.

73 Gerhard

Hi George,

thank you for the last change of teh script and the infos over email.

I could make it running now and could decode my own transmittion over the satellite.

Your application is having a very good audio quality. I am really surprized.

congatulations!

73 Gerhard

Hi George,

great work. I have copied the file to the gnuradio directory and started the .py file.

Unfortunatly I got following errors:

...............

gerhard@GNURadio:~/gnuradio$ python qpskdv.py

max_amp: 80 m_pitch: 320

p_min: 20 p_max: 160

Wo_min: 0,039270 Wo_max: 0,314159

nw: 279 tw: 40

max_amp: 80 m_pitch: 320

p_min: 20 p_max: 160

Wo_min: 0,039270 Wo_max: 0,314159

nw: 279 tw: 40

max_amp: 80 m_pitch: 320

p_min: 20 p_max: 160

Wo_min: 0,039270 Wo_max: 0,314159

nw: 279 tw: 40

max_amp: 80 m_pitch: 320

p_min: 20 p_max: 160

Wo_min: 0,039270 Wo_max: 0,314159

nw: 279 tw: 40

Traceback (most recent call last):

File "qpskdv.py", line 786, in <module>

main()

File "qpskdv.py", line 774, in main

tb = top_block_cls(decimation=options.decimation, ear=options.ear, ipaddress=options.ipaddress, mic=options.mic, rxfreq=options.rxfreq, tx_buffer_size=options.tx_buffer_size, txfreq=options.txfreq)

File "qpskdv.py", line 392, in __init__

self.pluto_source_0 = iio.pluto_source(ipaddress, int(rxfreq*1000), int(samp_rate), int(1000000), 0x8000, True, True, True, "manual", rxgain, '', True)

File "/usr/lib/python2.7/dist-packages/gnuradio/iio/iio_pluto_source_swig.py", line 126, in make

return _iio_pluto_source_swig.pluto_source_make(*args, **kwargs)

RuntimeError: Unable to create context

gerhard@GNURadio:~/gnuradio$

.................

Maybe I am missing some installation?

I have changed the TX frequency to 2400135. Could that be the reason?

If you want to discuss this offline, please send me your reply to gerhard@oe3gbb.eu.

73 Gerhard

Hi,

just was my not knowing. Screen is complete and block menue also. I just did not remember that I have to click on the black arrows and not on the block groupe name. So I habe Pluto sink and souce and all the others ready.
Did some trials with gnuradio about 10 years ago with minor success.

73 Gerhard

Hi George,

tnx for the infos. All OK now, installed everything without errors and Gnuradio-Companion is running. Could start a filter example. But cannot open the menue on the right side. There are no devices?

73 de Gerhard

Hi George,

there is something new to play with: LYRA https://github.com/google/lyra

Hi George,

I made a new install of Ubuntu 18.04 and GnuRadio 3.7.

Then I wanted to install the analog gr-iio, but in line 3 I got errors and line 4 did not start . There must be a syntax error. I am no Linux guy to solve this. I am quite happy if I can install some software without problems following a cook book.

Any ideas?

73 de Gerhard

Just wait, I will try to install Ubuntu 18.04 on a different machine and see if there is Grnuradio 3.7 in the package.

73

Sorry, IP is 192.168.1.6 (NB - station). the other one is WB.

Hi George,

I am using Ubuntu 20.04 and Gnuradio 3.8.1 on an i3-5xxx machine. Pluto is GPSDO stabilized and can run duplex over QO-100. I am using the GPIO - relay board for PTT in SDR-Console. Pluto is 192.168.1.7.

Do you think that equipment will be sufficient?

73 Gerhard

Hi George, that is great news. What do I need to test? I allready do have a Ubuntu computer and a Pluto via ethernet.

73 de Gerhard OE3GBB

Hi Poll,

I do have the same board and it is also broken now. I have used it with PlutoDVB FW 0303 and I think it was OK for a while. Now I cannot access the http-server of the box, nor get a telnet connection. I also lost the HDMI screen in OBS.
- I can hook up a TTL RS232/USB, but how to proceed from there?

- What is the patch for? Is it necessary for working with 0303 FW and how is it done savely?

73 de Gerhard OE3GBB

Correct! But here in Austria it is sufficient to give the information on a personal web-site. In connection with the identification by the callsign the authorities may find the necessary information.
Sorry about my English - maybe my expressions are missleading.

73

Hi All,
According to Austrian regulations all digital modes are allowed, if they do not exceed the bandwith regulations for the frequency band. This includes also experimental modes. But it is necessary to use an open documented digital mode. This can be achieved by using (1) an allready open documented mode, or (2) an experimetal mode. In case (2) it is necessary to show the callsign and mode at the beginning of the transmission (I am using waterfall picture) and give necessary infomation and/or code of this mode at least on a personal internet site.

73 de Gerhard OE3GBB