Hi guys.I have been running these reciever's for a while now and love them.
I know they work with the following radio's.
Ko Mars(Not the mars R),EX-1,anything KO FM.
But they also work with Airtronics while using airtronics crystals.
I like them with my M8 and 3ps due to being SOOO small in size.
These things are TINY.If your running a 3PS or a M8 and want some tiny reciever's check this out.
Quality Reciever-$39.99NEW.Thats a SMOKING deal.
I have been in this hobby a LONG time and when deals like this come up I try to pass them on.
If running a personal transponder just plug it into the battery slot or pigtail it off a reciever pack in nitro.
Hope this helps some people.