Didn't call it scanning when I started. That was before Radio Shack (then Allied) produces scanners. Monitoring I guess or SWLing.
Police was FM analog on low band, some big agencies were going to VHF.
Multi band portable radios were the big sellers. Sound was good even if off frequency a bit.
I was building Heathkit back then, they had a nice 6 meter receiver that could tune low band.
Then about '75, enter the Bearcat iii VHF and UHF, tuned with crystals you had to buy for given frequency. Decent though, about $4 a channel.
Couple years later here comes Radio shack, Don't recall the model, but you programmed it with binary switches. 3 band, 16 channels, really sensitive.
Since then, I have had receivers, some scanners, mostly HF stuff, but enough to fill a 2000 sq/ft wharehouse. Antennas, towers/poles, miles of coax. Transmitters and Military stuff not listed.
Now, mostly boxes and boxes of old public safety radios, some good, some parts, and time for spring cleaning.