Before you ask, I don't know:
- Whether the Portsdown software will work on it
- Whether it will be better for the Portsdown than the Raspberry Pi 3B
The Raspberry 3B and 3B+ will continue to be supported by the Raspberry Pi foundation for many years to come, so there is no threat to the Portsdown system. Quote from the press release:
"Are you discontinuing earlier Raspberry Pi models? No. We have a lot of industrial customers who will want to stick with the existing products for the time being. We’ll keep building these models for as long as there’s demand. Raspberry Pi 1B+, 2B, 3B, and 3B+ will continue to sell for $25, $35, $35, and $35 respectively."
I have ordered a Raspberry Pi 4 to play with and will keep you updated.
Very interesting, especially true gigabit ethernet (the previous ethernet was on the USB bus) and USB 3.0, should pair quite nicely with the Lime SDR.
I think I'll order one and have a play myself.
May be a slight problem.....
https://www.wired.co.uk/article/raspber ... ce-release
There was a problem with the openVG graphics that I use to display the buttons on the touchscreen. Until I have time to resolve this, the Raspberry Pi 4 will not work with the Portsdown software.
I'm sure that I will be able to resolve the issue, but I do not see it as a priority at the moment.
I've been using mine here a bit for video already with an RTMP server running on it as described in the streaming part of the forum and ffmpeg on the Pi taking the RTMP input (from iphone or obs) and sending the h264 to limesdr_dvb. Works reasonably well but I've some issues to figure out still. When you start messing about with the like of this you realise how great the Portsdown is for taking care of it all for you!
There’s firmware being tested that might reduce temperatures too but it seems this Pi is going to need more thought with regard to heat than previous ones.
The definitive statement is here: https://www.raspberrypi.org/forums/view ... 0#p1497474
Needless to say, I'm really disappointed, but at least the Raspberry Pi 3B+ will continue to be available for many years to come. System development will continue using the RPi3B and 3B+. I hope to release software that will allow your Portsdown to receive and display signals from a MiniTiouner in the next few months, and also transmit increased symbol rates (2MS?) from a LimeSDR.
I will also migrate the Portsdown software to Buster Lite (from Stretch Lite) when time allows.
So, for your next Portsdown transmitter/receiver, don't buy an RPi 4, buy an RPi 3B+ and a 7 inch screen (or a LimeNet Micro and a 7 inch screen).