For those of us who are using 70cm (430-470MHz) Amateur band tracking/telemetry transmitters, I found some interesting low-cost DIY antenna projects. First up is this dual-band (2m, 70cm) "Arrow" style "satellite" antenna. While it's meant for using for AmSat contacts, it can be modified for 70cm only use as a tracking antenna. Use only the 70cm elements and leave out the diplexer and you're good to go. http://ve2zaz.net/Arrow_Ant/Arrow_Style_Ant.htm For a cheap $4 solution, there's this one: https://www.kb6nu.com/diy-for-cheap-satellite-operation/ This one might be even cheaper! https://www.amsat.org/articles/n2spi/JulAug06AmsatJournal.pdf And one more: https://makezine.com/projects/make-24/homemade-yagi-antenna/ If anyone else has a link to add to the collection, please do! To me, rocketry is about DIY and building projects like this are part of what I enjoy about both my rocketry and my ham radio hobbies!