As referenced in this linked Thread the paranormal investigators in "The Conjuring" and also in "The Conjuring 2" are shown using a Mayfair FT-305 and a Uher 4000 Report (not sure which exact model) portable reel to reel tape recorders.
https://www.google.com/url?client=in...fV1f-NfM8B4dDG
David