I have one or had one. The antenna broke on the original and the solder came loose inside the antenna where it screws into hand held part on the replacement antenna I bought. It did increase the range. I kept mine in my bag and if they got to far out I could change to it and pick them up. Range for it depended on terrain. In thick pine plantations it was around 2.5 or so. In Ag fields with crp scrub brush and scattered hardwood blocks and tree lines I picked them up to 4 miles once.
Shotgun
Arkansas