Tracker 3 data collection and storage software: $995
Proton 5 Metal Detector
That's really not a bad price, if you consider how many copies they sell...and I bet that is a low number.
I have learned a little about magnetometers in the last several months. One of those things is that pretty much all modern magnetometers output data in NEMA sentences.
(If you are not familiar with NEMA comms protocols, here are a couple of references -the first one written by one of the great Open Source computer gurus of all time, Eric S Raymond, author of "The Cathedral and the Bazaar"
<
NMEA Revealed >
and
<
https://www.trimble.com/oem_receiverhelp/v4.44/en/NMEA-0183messages_MessageOverview.html >)
Anyway...your mag generates these NEMA sentences that look like these CSV (comma seperated values) files..these have had a good bit of extraneous data deleted, and the fish was on the deck, therefore the big cell-2-cell deltas "
[TABLE="width: 1144"]
[TR]
[TD]Reading_Date[/TD]
[TD]Reading_Time[/TD]
[TD]Magnetic_Field[/TD]
[TD]cell2cell delta[/TD]
[TD]Signal_Quality[/TD]
[TD]Depth[/TD]
[TD]Measurement_Time[/TD]
[TD]Signal_Strength[/TD]
[TD]Reading_ID[/TD]
[TD]System_Time[/TD]
[TD]Mag_Latitude[/TD]
[TD]Mag_Longitude[/TD]
[TD]GPS_Latitude[/TD]
[TD]GPS_Longitude[/TD]
[/TR]
[TR]
[TD="align: right"]18-Jul-18[/TD]
[TD="align: right"]07:10.5[/TD]
[TD="align: right"]20640.047[/TD]
[TD][/TD]
[TD="align: right"]99[/TD]
[TD="align: right"]0.3[/TD]
[TD="align: right"]465[/TD]
[TD="align: right"]198[/TD]
[TD="align: right"]2[/TD]
[TD="align: right"]07:14.9[/TD]
[TD="align: right"]27.77617[/TD]
[TD="align: right"]-80.3964953[/TD]
[TD="align: right"]27.77601167[/TD]
[TD="align: right"]-80.3964[/TD]
[/TR]
[TR]
[TD="align: right"]18-Jul-18[/TD]
[TD="align: right"]07:11.5[/TD]
[TD="align: right"]20772.342[/TD]
[TD="align: right"]-132.295[/TD]
[TD="align: right"]99[/TD]
[TD="align: right"]0.3[/TD]
[TD="align: right"]465[/TD]
[TD="align: right"]198[/TD]
[TD="align: right"]3[/TD]
[TD="align: right"]07:15.9[/TD]
[TD="align: right"]27.77616[/TD]
[TD="align: right"]-80.39649074[/TD]
[TD="align: right"]27.77600417[/TD]
[TD="align: right"]-80.396395[/TD]
[/TR]
[TR]
[TD="align: right"]18-Jul-18[/TD]
[TD="align: right"]07:12.5[/TD]
[TD="align: right"]20573.205[/TD]
[TD="align: right"]199.137[/TD]
[TD="align: right"]99[/TD]
[TD="align: right"]0.3[/TD]
[TD="align: right"]465[/TD]
[TD="align: right"]197[/TD]
[TD="align: right"]4[/TD]
[TD="align: right"]07:16.9[/TD]
[TD="align: right"]27.77615[/TD]
[TD="align: right"]-80.39648141[/TD]
[TD="align: right"]27.77598833[/TD]
[TD="align: right"]-80.396386[/TD]
[/TR]
[TR]
[TD="align: right"]18-Jul-18[/TD]
[TD="align: right"]07:13.5[/TD]
[TD="align: right"]20651.738[/TD]
[TD="align: right"]-78.533[/TD]
[TD="align: right"]99[/TD]
[TD="align: right"]0.3[/TD]
[TD="align: right"]465[/TD]
[TD="align: right"]199[/TD]
[TD="align: right"]5[/TD]
[TD="align: right"]07:17.8[/TD]
[TD="align: right"]27.77613[/TD]
[TD="align: right"]-80.39647185[/TD]
[TD="align: right"]27.77597167[/TD]
[TD="align: right"]-80.396378[/TD]
[/TR]
[TR]
[TD="align: right"]18-Jul-18[/TD]
[TD="align: right"]07:14.5[/TD]
[TD="align: right"]20595.296[/TD]
[TD="align: right"]56.442[/TD]
[TD="align: right"]99[/TD]
[TD="align: right"]0.2[/TD]
[TD="align: right"]466[/TD]
[TD="align: right"]198[/TD]
[TD="align: right"]6[/TD]
[TD="align: right"]07:18.8[/TD]
[TD="align: right"]27.77612[/TD]
[TD="align: right"]-80.39646228[/TD]
[TD="align: right"]27.775955[/TD]
[TD="align: right"]-80.396369[/TD]
[/TR]
[TR]
[TD="align: right"]18-Jul-18[/TD]
[TD="align: right"]07:15.5[/TD]
[TD="align: right"]20576.41[/TD]
[TD="align: right"]18.886[/TD]
[TD="align: right"]99[/TD]
[TD="align: right"]0.2[/TD]
[TD="align: right"]465[/TD]
[TD="align: right"]196[/TD]
[TD="align: right"]7[/TD]
[TD="align: right"]07:19.9[/TD]
[TD="align: right"]27.7761[/TD]
[TD="align: right"]-80.39645247[/TD]
[TD="align: right"]27.7759375[/TD]
[TD="align: right"]-80.396362[/TD]
[/TR]
[TR]
[TD="align: right"]18-Jul-18[/TD]
[TD="align: right"]07:16.5[/TD]
[TD="align: right"]20651.856[/TD]
[TD="align: right"]-75.446[/TD]
[TD="align: right"]99[/TD]
[TD="align: right"]0.3[/TD]
[TD="align: right"]465[/TD]
[TD="align: right"]200[/TD]
[TD="align: right"]8[/TD]
[TD="align: right"]07:20.9[/TD]
[TD="align: right"]27.77608[/TD]
[TD="align: right"]-80.39644246[/TD]
[TD="align: right"]27.77591917[/TD]
[TD="align: right"]-80.396355[/TD]
[/TR]
[TR]
[TD="align: right"]18-Jul-18[/TD]
[TD="align: right"]07:17.5[/TD]
[TD="align: right"]20554.103[/TD]
[TD="align: right"]97.753[/TD]
[TD="align: right"]99[/TD]
[TD="align: right"]0.3[/TD]
[TD="align: right"]465[/TD]
[TD="align: right"]198[/TD]
[TD="align: right"]9[/TD]
[TD="align: right"]07:21.9[/TD]
[TD="align: right"]27.77607[/TD]
[TD="align: right"]-80.39643277[/TD]
[TD="align: right"]27.77590167[/TD]
[TD="align: right"]-80.396348[/TD]
[/TR]
[TR]
[TD="align: right"]18-Jul-18[/TD]
[TD="align: right"]07:18.5[/TD]
[TD="align: right"]20579.495[/TD]
[TD="align: right"]-25.392[/TD]
[TD="align: right"]99[/TD]
[TD="align: right"]0.2[/TD]
[TD="align: right"]465[/TD]
[TD="align: right"]199[/TD]
[TD="align: right"]10[/TD]
[TD="align: right"]07:22.9[/TD]
[TD="align: right"]27.77605[/TD]
[TD="align: right"]-80.39642332[/TD]
[TD="align: right"]27.775885[/TD]
[TD="align: right"]-80.396338[/TD]
[/TR]
[/TABLE]
[TABLE="width: 1698"]
[TR]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[/TABLE]
The gist of all this is that what you are really doing with that mag software is reading these values, storing it in either a csv format or some proprietary file type which is most likely a csv file with a different name and then looking at it, either in this sort of format or some graphic visual representation.
At the heart of all this, pared down to the barest minimum, what you are looking for is the field signal and the GPS location of the fish at a given time. That gives you the field strength at that location. I put a column in there called cell2celldelta" that calculates the change between consecutive cells to easily show the hits that register above your interest threshold, be it 1,2 3 or 5 gamma. You can dump that data into MS Excel and have a spreadsheet or you can get
Terry Armstrong's (Signum Ops) DigTrakR software, it will do this as well. DigTrakR is the best option IMO, and Terry deserves a lot of credit for developing this piece of software for the treasure salvage business. Heis the one who got me started looking at the data instead of the pretty pictures.
You can map that mag information right into DigTrakR or Google Earth
It's pretty cool stuff...but it DOES require a good bit of study to do it right. I am still studying.
Hope this might help someone.