For VHF Civil air, DPD Productions has the following....VHF Air (118-136 MHz) 1/4 Wave Mobile Antenna
They also have a UHF Military aircraft antenna for mobile use.
Mil UHF (225-400 MHz) 1/4 Wave Mobile Antenna (Wideband)
Folks, let me toss a secondary question at you. What do folks use to monitor VHF Air and Mil Air freqs when mobile? A standard whip cut for these freqs would have a standard donut pattern but would potentially not be that great overhead? Just curious what folks are using for that? My older Icom IC-208H dual band Amateur Radio does AM and FM in that range so might as well look for an antenna that works there too. Just using a multi band VHF/UHF for now and testing it out. Curious if anyone has anything like a mobile egg beater or anything strange they are using? Mini mobile discones anyone?
S.