long distance serial high speed? https://protosupplies.com/product/max485-ttl-to-rs-485-interface-module/ I come from the security business and we used rs-485 for links between access system control.

David, that is a bummer. for you US guys. In here we are ok to tx any symbols/sec as long as it does not exceed the maximum BW of the band. and it is larger than 200 khz for 70 centimeter and much mor

Guys, you should take a look at the implementation of high speed communication on the 70 cm band. https://hnap.de/about/ With 2 pluto sdr (running linux) you can establish a high speed link that runs

I had some pretty good luck running windows software with wine. But not that much experience with raspberry pi as most of the time I was using a real PC to run linux. I don't know if x86 emulation is

A pi4 need 3 amp just to run normally. not talking about any device powered by the USB or other power connector on the pi. A LM7805 will supply 1 amp max continuously and this is with a pretty large a