I am in need of a micro transmitter. The Scout is magnetic on/off with tailmount clip. 218.035. I can throw in a unused trackpack if need be. The antennae needs replaced but is only 9 dollars. Because of my need I will trade straight a across even for a merlin mini with no tap on/off and bewit mount, but probably not the trackpack. I'll trade all of the above for a Marshall Micro.