scanner ant for TV
Generally speaking (and you proved it) scanner antennas work well for TV. They are broad banded.
Unfortunantely,the reverse is not always true. TV antennas
have a big null in the 100-160mhz or so range to help eliminate unwanted signals.
TV antenna>> the corner reflector for the UHF side should work well as an 800 meg antenna and channel 2 on the VHF side is 54 mhz very near the 6m band.
Are you using an ATSC tuner? If so, is this a high dollar in dash unit or are you TVing off an inverter? I want digital TV mobile to get the local digital radar during storm chasing.