Mobile scanner antenna
I have used the Austin Spectra antenna for several years and find it quite good. It's tunable for the 30-50Mhz band and includes a cutting chart. Mine is cut for 42Mhz CHP. It can transmit on 2 meters and 70Cm. I use it as a backup ham antenna. I have used many mobile antennas since 1969 and this is one of the best. Not cheap, but you get what you pay for.