I was wondering if anybody has experience in building VHF-tags from the scratch. I couldn't find useful instructions online, so maybe anybody wants to share own experience...I am working on bats and sometimes I simply need to locate a roost of a bat, which I caught foraging. 150€ for a commercially avaliable tag is quite a lot for this simple application.
all the best,
9 January 2019 4:57pm
Try Naef-Daenzer, B., Früh, D., Stalder, M., Wetli, P., & Weise, E. (2005). Miniaturization (0.2 g) and evaluation of attachment techniques of telemetry transmitters. Journal of Experimental Biology, 208(21), 4063-4068.
It's a single-stage transmitter (so lower range than a two-stage) and the components are probablly all out-of-date, but most of them look easily replaceable. At 0.2g, probably good for bats though!