The AOR SA7000 is a standard antenna supplied to commercial broadcast stations for their Emergency Alert System receivers that pick the EAS broadcasts from AM, FM or NOAA weather stations, for rebroadcast over TV, etc. I had to install one and was not happy with its construction or performance and rebuilt it with a tuned dipole for 100MHz and 162MHz, leaving the 6ft whip intact for AM broadcast pickup. The FM broadcast and 162Mhz weather channels increased a lot after the rebuild and the original VHF/UHF whip didn't resonate anywhere near the FM broadcast or 162Mhz range.
I also picked up an SA7000 used cheap to copy the transformer they use for the VLF/HF side. That part seems to work ok for a small passive antenna.