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Message: <blockquote data-quote="s-band" data-source="post: 970313" data-attributes="member: 407744">I didn't think about what you were trying to do when suggesting SpectraVue. You can't do a wide band measurement with it. You need at a few MHz BW to capture the 1090 pulses as they are short. Perhaps the way to get a qualitative comparison would be to look at the frames/sec on ADSBSpy & ADSB#.It's not much use for 1090 but I have added the settings I used for a CW source (Inmarsat 15W beacon). The SV_cont pic is a record of my turning the dish away then across then back to the sat. It shows the lop sided side lobes due to the offset feed.[ATTACH]92942[/ATTACH] [ATTACH]92943[/ATTACH] [ATTACH]92944[/ATTACH]</blockquote>