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Portsdown 4 with Pluto
Posted: Tue Aug 25, 2020 9:38 pm
by VK3IE
What are the current limitations of the Pluto as compared to the Lime.
Current new Firmware with Lime working well (local setup) Just do a new SD saves a lot of weird stuff from happening.
Not seeing many Setup\FAQ on using Pluto with Portsdown
Thanks
Re: Portsdown 4 with Pluto
Posted: Wed Aug 26, 2020 3:01 pm
by G8GKQ
The Pluto modes are still somewhat experimental in the Portsdown - hence the lack of documentation.
The Pluto modes are:
- H264 only. No MPEG-2 or H265
- 4:3 SD or basic 16:9 only. No 720p or 1080p
- You can set and store (for each band) Pluto relative power on a range of 0 to -71. This approximates to dBm, but is plus or minus 10 dB.
- I have seen it work well on symbol rates between 125 and 1000 kS.
- DVB-S or DVB-S2
- Video source Pi Cam, Comp Video, C920, Test card or Contest.
- Pluto and RPi GPIO PTT switching implemented, but the test card mode overuns after deselction of transmission
- Only tested with F5OEO's "for the brave" Pluto firmware (FIRM2101RC of 5 February 2020) .
Dave, G8GKQ
Re: Portsdown 4 with Pluto
Posted: Wed Aug 26, 2020 11:13 pm
by VK3IE
Thanks, now I have a feel of what to look for.
Lime is working 4 ks and upwards locally real well.
Just need to get some AMPS happening (watts) for vk3rtv
Cheers
Re: Portsdown 4 with Pluto
Posted: Thu Aug 27, 2020 4:50 am
by F4DVK
Hello,
Dave,
Have you tested in DVBS with a 5/6 or 7/8 FEC?
Thank you,
Stephane.