Hello. I have a custom build by Innovatenna in UK.   This is a Yagi covering the entire VHF aircraft band. It’s never been installed. We have a very wideband OP-DES design Yagi which we designed and produced for Ofcom in fact. It covers from around 116Mhz to 136Mhz. This as standard has a rear mount for vertical working with total length of around 2.2m. $300 CAD