Posts by ik4idy

Quote from DD9PR

Hello,

I try to decode the 1,500 WB Bacon. [90cm mirror, LNB-unmod/POTY Vers. 2. 0. 21] with PLUTO. NB (RX/TX) works fine. The IP Plot does not show circles, although there is enough level. So the decoding doesn’t work. Where should I look?

Best regards,
Rolf, DD9PR

Display More

Hi Rolf,

try to reduce gain, anyway, it takes a lot of time to lock the constellation (10-15 sec in my case). Parameters seems ok but there's an anomaly in the Bandwidth parameter. You have to see a grey band that cover the centered signal. I dont' see this greyband, may be 500000 is too much. Try to tune without changing the bandwidth, leave the same value showed when the app is open first time.

73 and regards.

Anyway HS Modem is a great Software thank you DJ0ABR.

Quote from DG7YEO

Hi,
installed 0.72 today but can't get the sound working. using VB_Audio Cable, I have the free single one and the additional a+b installed.

Hardware is a Pluto with SDR-Console on a Laptop with i7 CPU running win10 64Bit . The Audio cables are working fine with several other programms i.e. JTDX, fldigi, KGSTV, MMSSTV but hsmodem don't like them. I tried several setting like 48K, 44K1 both with 24 and 16 bit but no success always looks like below

In the Voice Audio TAB looks the same I get the red sign don't madder which Speaker/Headphone/Microphone is selected

in the "Treminal Window" I see a list of all my connected audio devices including the 3 VB Audio cables but always get output below.

QO100modem initialised and running

restart modem requested

startModem

Close RTTY

Start request for CAP stream:CABLE Output (VB-Audio Virtual Cable)

Starting CAP stream:CABLE Output (VB-Audio Virtual Cable) [6]

err:-9997 device:6 PAdev:20 samprate: 44100.000000

cannot open capture stream for device:<CABLE Output (VB-Audio Virtual Cable)> -9997

CAP: cannot open device: CABLE Output (VB-Audio Virtual Cable)

set speedmode:255

restart modem requested

Any hint is welcome.

73

Elmar

Display More

Hi Elmar,

I have been eperienced the same "issue", but in my case, selecting the last check box, to start the transmission and reception of DV (This is in the same page, of parameter show in tour post) , the red cross move to green tick. In my opinion, the app doing the check of audio parameters only when you select a mode to use the digital encoder.

After this all run well.

Please try this and tell me if the issue is solved.

73

Alex

Quote from ik1hgi Tony

Thanks Jean Pierre, January 13, 2021 I downloaded the program the first to receive was Frank DD0CW SR25 16APSK and I had a great surprise of the program you have created an excellent program COMPLIENMTI

73n Tony IK1HGI

Display More

My observation is that Robert has an excellent emission at 16psk 25 K/s. Until now he's the only station that I can read perfectly. This not happens with other station, may be that my system has issue to decode at 16PSK when a signal is "dirty" or with TS broken.

The new parameters in Minitioune don't help to read other station, instead DVBS_GUI at lower speed show unexpected performances.

Anyway I need time to improve my setup.

73 De IDY

Thank you JP.

73

Quote from f5uii

To announce you this time a new patch (UII2.3) which brings these new functions:

1. Multiple modulator profiles (I worked hard)
2. Transmission time counter
3. Internal temperatures
4. Focus on null packets on the analysis page
5. Github commits history

After some days of feedback and then maybe correction, it is likely possible that a complete firmware will be available soon.

Your remarks and feature ideas are welcome on

https://www.f5uii.net/en/patch-plutodvb/

Display More

Great Job Christian, thank you very much for your effort.

73

Dear all,

I've a OPTICUM LTP 04H but I have different request for the modification. My aim is to maintain the second output, and drill a hole to take 25 MHz to the chip. Would you examine my schema to check if it's correct ? Thank you for your answer,

I leave the resistor, delete the wiring, cut the track and connect 25 MHz source to the point showed by my arrow. I will connect a small coaxial cable with gnd connected in some point were available.

73 Alex

Quote from DB8TF

Nino Porciono Decoder runs on my Win 10 2004 64bit without problem

Just said in "my case".

I Agree with Mike. To avoid amplifier crash, it's important to define a limit,.

Also useful a possibility to save a "transmit profile". This is useful to load quickly, parameters for each speed selected.

(PCR/PTS, PAT, MODE, FEC, Pilots, Base frequency, Modulation, Frame etc) eg Button Save Profile, name file.

Corresponding to this button another "Load Profile" drop down menu to select the profile, and load automatically saved parameters.

73

As told Peter, AO40RVC works only for message, no telemetry. Don't use Nino Porcino Decoder, with Win10 in my case won't run due to lack of libraries.

73

Quote from DB1CC

Helix Antennas are broadband by design, so an thick wire is not really needed. To be mechanically stable, it is better to use a plastic holder to support the wire. This example of my helix is built using 1mm Wire, supported by printed PETG holders and is very broadband as you can see. Impedance matching is done by a metal vane wich can be easily bent to get perfect match. Five windings give you good circular polarisation and high gain. Combined with the LNB in the middle of the Reflector, LNB loss is very low (about 0.5 to 1 dB)
because of very low shadowing the LNB by the thin wire.

Nice realization.

I confirm all. In my experience I had settled for ch 12 of WiFi and issues was reduced dramatically. The lower channel of WiFi, have more problem when I'm transmitting.

73

Another continuos beacon on QO-100 ...

Yes your video has a good realization, clear and punctual, sometimes during my test on QO-100 datv I trasmitted your well done video on SDR. Someone appreciate it.

73 and regards.

Alex

4 it's too low...same issue for me on lotw....very bad....

73

Nice !

Hello all,

tested today dvbs-gui to have a second receiver, seems works well, from 125 up to 1000 K/s. But when I try to receive 1500 the K/s remain at 1200 K/s. When I try to increase the grey band (K/s) remain at 1200, and decode signal at 1500 it's impossible.

Has anyone experienced some of similar ?

TU

In my case suggestion don't solve the issue. Now on Mintioune is correctly settled the paremeter -> v_decoder : LAV Lideo Decoder but the issue still remain.

In my opinion the best solution is to embed VLC on Minitiouner 0_9_9_1.

73

Please see this very intreresting video that simply explain the Low Density parity Check :

Low Density Parity Check

I have been transmitted it on QO-100 WB trasponder several times.

Hope this is useful for you.

Regards.

Hi,

about it I observed that after 45% of error correction, image and audio start to experience serius issues, after 50 % the signal is loss.

Anyway with a high percentage of error, the systems has more work to rebuild the original frame.

Under 30 % I haven't observed problems to decode correctly signals, sometimes you may have a glitch, but after the image and audio return to a good quality.

Regards.