Mike Hillis
Well-known member
Just some tips for when you get around to using the F5's all metal Auto Tune mode....
First, the F5 has four audio pitches you can select from for your threshold pitch in the All Metal operating mode. A1 is the lowest, A4 is the highest. The pitch you chose in the all metal mode will also be the pitch of your pinpoint audio and this will carry over into the Discrimination mode. Yes, the F5 will let you select the pitch of your pinpoint VCO audio. It is not a saved setting though. The selection is lost when you turn the machine off.
Second, in the Auto Tune all metal mode (Auto Tune basically means the threshold won't drift) the F5 will still give target ID numbers. However, in this all metal mode, the F5 will detect deeper than it can identifiy targets. Another words, very deep targets will give a audio response but no target id numbers on the screen. When you hunt in the all metal mode and you get a target response that doesn't give an id number you can still id ferrous/non-ferrous by using the ground phase read out number much like I have described before, only now, due to the depth, you'll need to dig a couple of these to see how the ground minerals and target depth is skewing the ground phase number.
Third, in hot ground (my ground reads 4 FE304 bars most all the time due to my black sand minerals) you get a better ground balance by switching over to All Metal and manually balancing than you do using the Phase Lock function. To ground cancel spot on, set the threshold to 0 or -1 and adjust until you get NO THRESHOLD hum. Any noise you hear while ground cancelling this way will be from either ground noise or ground balance offset. Spot on balance will be silence when you pump the coil. You want the perfect balance first before adding any threshold tone. If you ground cancel with a threshold hum you won't be able to tell when theground noise is truly cancelled out.
HH
Mike
First, the F5 has four audio pitches you can select from for your threshold pitch in the All Metal operating mode. A1 is the lowest, A4 is the highest. The pitch you chose in the all metal mode will also be the pitch of your pinpoint audio and this will carry over into the Discrimination mode. Yes, the F5 will let you select the pitch of your pinpoint VCO audio. It is not a saved setting though. The selection is lost when you turn the machine off.
Second, in the Auto Tune all metal mode (Auto Tune basically means the threshold won't drift) the F5 will still give target ID numbers. However, in this all metal mode, the F5 will detect deeper than it can identifiy targets. Another words, very deep targets will give a audio response but no target id numbers on the screen. When you hunt in the all metal mode and you get a target response that doesn't give an id number you can still id ferrous/non-ferrous by using the ground phase read out number much like I have described before, only now, due to the depth, you'll need to dig a couple of these to see how the ground minerals and target depth is skewing the ground phase number.
Third, in hot ground (my ground reads 4 FE304 bars most all the time due to my black sand minerals) you get a better ground balance by switching over to All Metal and manually balancing than you do using the Phase Lock function. To ground cancel spot on, set the threshold to 0 or -1 and adjust until you get NO THRESHOLD hum. Any noise you hear while ground cancelling this way will be from either ground noise or ground balance offset. Spot on balance will be silence when you pump the coil. You want the perfect balance first before adding any threshold tone. If you ground cancel with a threshold hum you won't be able to tell when theground noise is truly cancelled out.
HH
Mike