After feeding data for about 3 years I’m interested in spending a bit of time/$ upgrading my site. I’ve read through the Do I need a filter post and used Option 1 to scan. I’m in a US metropolitan area and have the blue ProStick Plus with the FA antenna mounted in the attic attached to a Pi 3+. I’ve uploaded to Dropbox the scan.png plus smaller snippets of three parts of the spectrum that seemed ‘busy’. The 850M-900M looks pretty busy to me (US cell carriers). There are signals in the 930-950 range as well (some GSM in the US or ?). And there is the expected cluster around 1090M but there is also a smattering of signals across 1060-1100M (I wonder what those are?).
Based on this it seems worth trying a filter. Does my conclusion make sense?
If so, what options are there in the US? I see the uputronics SAW mentioned quite a bit but they don’t seem to have a US store. Are there any good alternatives available in the US or are folks ordering these for overseas shipment to the US?
Here are the snippets in-line in case that is easier/better for viewing.