An old(1969) spectrum analyzer found in W3VC's shack. One replaced fuse later, it works! In this video it is centered on 450 Mhz, with a spacing of 2 Mhz for each line left or right. Thus all the channels turning on and off are around 453 Mhz, and are Pittsburgh's police/medical/fire channels.
Sorry for it being out of focus, this android phone forces to infinity focus for vidoes.
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