In his case, a 2.4 Tx would definetly be an upgrade. I know 72 Meg is still perfectly good technology and the blame is surely onhim, but all of us at ourfield have been wonderingfor years why he has'nt made the switch from that old FM system considiring the money he spends onhis aircraft. in my opinion 2.4 is far superior than 72 meg and never needing a frequency pin or impounding my Tx, or worring about someone shooting me down gives mepeace of mind.