Pettersson D240X: This bat detector is practically a legend in it’s own time.
This model has been intensely popular amoung Professionals over the years.
be fooled by its compact size: The fact that the D240X is small (fits
easily in most pockets) almost belies it’s capabilities as a
It allows you to listen to the both the
heterodyne, and the time expansion activity going on at the same time
(using any stereo earphones). You can hear the heterodyne sounds in one
ear and the time expansion activity in the other, simultaneously.
Add a digital stereo recorder, and you’re all set.
The single best-sounding heterodyne detector I’ve ever heard. A very capable and sensitive time expansion unit as well.
Partnered with a Zoom H2 or H2n = A perfect combination; with well-documented set-up tips easily found on The Web.
Confused about set-up? Use my settings! (approved by Mr. Pettersson himself):
Time Exp X
Gain: Low -------------------- (I used to keep it on High (as suggested)
but, I thought that I was recording too much noise / non-bat calls,
Volume: Set to Minimum
Trigger Level Source: Low
Mem Size: I set it to either 1.7 Sec or 3.4 Sec."
Al at Bat Detector Reviews