Even a small commercial 12V gel- or AGM-battery (6 Ah) is enough to power the HFE59B with UBB27 antenna for 36 hours. Thus, in conjunction with the NFA (current-supplied for 36h by its internal battery), high frequency can be recorded in parallel to the low frequency 3D magnetic field for one and a half days.
incl. local taxes plus shipment
price outside EU: €22.10
Delivery time: 1-3 days