The t part is to mount the Atlas onto the RC, the connectors are standard qma connectors, you can get adapters from electronics stores to use different aerials
The whips have sma - qma adapters so you could use the to test and buy more if you wish to quick swap in future
In front of my house its gone from 600m to 1400m, I'm on ce power 0.09w, if I can up to FCC then I'll get more distance both amped and unamped, some reason on both phones I've tried it won't change to FCC or boost hence why I bought the Atlas
tried dual controller but when I turned on Atlas the 2nd RC dropped out, tried again in the house it was ok, will try another test in a few days if weather is good
Not tried just the whips yet