Yes the bh tracker iv is basic but got it for $25 from offerup a few years back. I found a review here from Steve??? Grouping the F19, Gold bug,the TECHNETICS 2 and BH Time Ranger together all at 19hz with only price separating them +5yr warranty on BHTR. F19 $449 and Time Ranger Pro $399 the coils of all 4 models interchangeable. I must say the $400 price is very attractive.