ADALM-PLUTO (new DATV SDR)

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M5TXJ
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Joined: Wed Jul 05, 2017 8:34 pm

Re: ADALM-PLUTO (new DATV SDR)

Post by M5TXJ » Mon Oct 07, 2019 7:13 pm

Hi Paul,
Don't know if I fully understand the process as yet but I'm re reading to try and get it all clear in my head before diving in. Just a suggestion but I think it would make a fantastic article for CQ-TV.
73 Dave.

m0eyt
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Joined: Wed Nov 14, 2018 3:30 pm

Re: ADALM-PLUTO (new DATV SDR)

Post by m0eyt » Tue Oct 08, 2019 9:28 am

Hi Dave, all,

Good idea re CQTV - the problem is that I know virtually nothing about DATV! Its been a real struggle learning OBS / VMIX etc, but the RF side has been easier. The F5OEO stuff on the pluto is a dream to use, maybe I'll write it up particularly around the config and setup side, and some on the RF linearity issues with xPSK.

regards,

Paul EYT.

A couple of pics;

https://twitter.com/uhf_satcom/status/1 ... 4439688194
https://twitter.com/uhf_satcom/status/1 ... 1570904064
https://twitter.com/uhf_satcom/status/1 ... 8272966656

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M5TXJ
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Re: ADALM-PLUTO (new DATV SDR)

Post by M5TXJ » Tue Oct 08, 2019 10:11 am

Paul, that's excellent work from both you and Evariste. I sympathise greatly as I can solder almost anything and love hot electrons (valves - not tubes!) but software and the like is witchcraft to me! The Pluto looks to be a good device for this application, I may eventually be brave enough to dip my toe.
73 Dave (in awe)

m0eyt
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Re: ADALM-PLUTO (new DATV SDR)

Post by m0eyt » Fri Oct 11, 2019 7:56 am

Hi all,

The firmware for the pluto is now released and can be downloaded from http://www.vivadatv.org/viewtopic.php?f=60&t=692

I've submitted an article to CQTV about getting this up and running, hopefully it will be published soon.

regards,

Paul EYT.

F1CJN_alain
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Re: ADALM-PLUTO (new DATV SDR)

Post by F1CJN_alain » Fri Oct 11, 2019 8:45 am

Thanks a lot.
Is it a standalone solution or does it run with DVBSDR ?
Does it need rtmp with OBS ?
73's
Alain F1CJN

m0eyt
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Re: ADALM-PLUTO (new DATV SDR)

Post by m0eyt » Fri Oct 11, 2019 9:18 am

Hi,

I run OBS stream output with;

rtmp://1.2.3.4:7272/,2409.75,DVBS2,8PSK,333,12,
Pass : ,M0EYT,

to output 2409.75 MHz / 8PSK / 333ksps 1/2 rate fec

Very important to set OBS output streaming video bitrate to say 250Kbps so as not to overflow the pluto.

regards,

Paul M0EYT.

F6DZP
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Re: ADALM-PLUTO (new DATV SDR)

Post by F6DZP » Fri Oct 11, 2019 12:13 pm

Hello,
Is it a standalone solution or does it run with DVBSDR ?
yes and no,
standalone solution but it needs only to receive encoded video and audio using RTMP or UDP protocol.
Does it need rtmp with OBS ?
You can use a smartphone to send the video+audio to the Pluto..
You can use a HDMI to IP H264 or H265 coder and send the stream using UDP
these 2 first solutions don't need any PC, Rpi or Jetson

You can use OBS or VMIX to encode in H264 and send the data using RTMP.

Jean-Pierre F6DZP

F6DZP
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Re: ADALM-PLUTO (new DATV SDR)

Post by F6DZP » Fri Oct 11, 2019 12:15 pm

Very important to set OBS output streaming video bitrate to say 250Kbps so as not to overflow the pluto.
as you can set different SR you want, We could say that you set the video bitrate at about 70% of the SR bitrate.

Jean-Pierre F6DZP

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M5TXJ
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Re: ADALM-PLUTO (new DATV SDR)

Post by M5TXJ » Tue Oct 15, 2019 9:38 am

Hi again Paul,
Well I've flashed Evariste's firmware to my Pluto and have downloaded OBS. Do I need to find an address (IP) for my Pluto somewhere or do I need to configure the Pluto first? I'm feeling my way around OBS settings and guess I've to set up a custom "service".
73 Dave.

g0mjw
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Re: ADALM-PLUTO (new DATV SDR)

Post by g0mjw » Tue Oct 15, 2019 10:17 am

Did you install the Pluto IIO drivers already? If not install them from the Analog website. (Sorry, not as home to find address)

Then the Pluto will appear as a network with the IP address 192.168.2.1. you should be able to access it via a web browser and ping it etc.

If you have not done the mod to enable the second CPU, do so. Also do the mod to extend frequency range if you want to use it on 2m/4m/6cm.

At this stage, if you put 192.168.2.1 into a web browser the help page should appear (this is coming from the Pluto) and there are examples of how to set up OBS and VMIX given.

Mike

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