It all boils down to shielding. A Rigol spectrum analyzer will never have the performance of an HP due to the lack of EMI mitigation. I have a Flex 6500 with no noise issues due to the computer, then again my RX antenna is 100 feet away.
Yeah. But I don't think your Flex 6500 tunes above 70MHz, which is where the birdies from modern computers, modems, video cards, and high-end displays are worst.
I have a RF Space NetSDR+, and it's wonderful below about 30 Mhz, but there's a horrifying racket on 6m and 2m, and the FM broadcast band is pretty much unusable for weak signal work.
I'm playing with a optical link to the top of the hill behind my place. We shall see.
I'm surprised that the computer interference issue isn't more widely discussed. I suspect that it's because newbies have no idea of how much of the junk they see on their screens doesn't actually exist. Plus living in city environments they are so swamped by RFI that they think it is normal.
Just looking at the screen on the OP's web page makes me shudder. It's a whole mess of computer interference.
