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F75 erratic? Here is a tip

EZrider

New member
I often hear people talk about the "erratic" behaver of the 75. Outside of EMI from other detectors,power lines etc that you use the frequency shift to eliminate. I think i know where this is coming from. This is just a shot in the dark to 75 users but are you using the fast grab ground balance enough? It almost seems like people only do it once at the beginning of there hunt and thats it. I tyred to replicate this on my last park hunt. I only GB once and when i moved to different area different dirt it seemed to be erratic. Fast grab calmed it down and the way i went.

There are quite a few machines out there that auto ground balance. The 75 with fast grab makes it easy to do on the go. A good ground balance is key to depth, stability and ID.
 
Thanks EZ,
I will remember to Fast Grab more because I am guilty of not doing it often.
No erratics to speak of apart from home electronics and the CELL phone. Those things are terrible.
 
The erratic in the field isnt as extream as the EMI but it is there. After reading some post and comments i started thinking that people did not ground balance on often. I always do and do it offten, thought everyone did. Yesterday on wile hunting, on perpouse i did it once and let it alone "gb at 71" After sevral yards when i moved into a new part it seemed like falseing "lots of little chirps". I GB agian and it was 82. It simmered back down to smooth running. I did get two frist yesterday. Two barber dimes and one was my oldest coin 1902. I will post and have pics tonight or tomarrow.
 
Each time I read about cell phones causing erratic behavior of the F75, I'm left wonder - to my knowledge my cell phone has never caused problems. Since I'm out in the middle of no where looking for cellar holes and 73 years old, carrying a cell is always part of my outfit for the day. Ground balancing - will quiet most of the F75's chirping problems. I have found using the small coil a tremendous asset - when hunting in brushy areas - which seems to have quieted the machine. I need to set up a planted plot to figure out how far ahead and behind the small coil - the machine is capable of detecting desirable targets. One more testimony for the F75 and the small coil - recently detecting ski slopes in an area which has seen numerous "experience" detectorist, I found a 1951 silver dime at five to six inches - however - I was amazed at how many coins I picked up at a similar depth, near the silver dime area of years close to the 1951 date - missed by others. One more advantage of the small coil - pin pointing is easier - faster and eliminates the need for carrying a pin pointer. Some day I may need to eat my last words but so far I'm satisfied the small coil was a great purchase.
 
Did some detecting this weekend in the bottle cap park. Picked up 2 dimes and a penny. Batteries were old and the meter was flashing an empty reserve.
Started out a bit erratic and then I Ground Balanced the erratics away. I was out for nearly 3 hours on dead batteries and had a blast looking at bad targets and getting skunked by a few. The one dime had an ID in the 70's and had a pretty high FeO reading. It was the high numbers of the ID that convinced me to dig. The other dime I eyeballed.
The unit ran good up to the last when in PinPoint it shut down. I rebooted and got the machine to find a tricky foil wrapper.

That was some good time spent for dead batteries. My purpose was to work the trash to improve my skills in more fruitful places that are not picked clean. I hate trash. Mostly all the different types of bottle caps out there that have different compositions.
I was focusing on the FeO meter and iffy targets. I was using the small coil and the public location is a modern park with soils in the 80's. Not an ideal detecting situation but it is nice to know what can be done with low battery power. The F75 seemed to work flawlessly in light of the low power warning. Shut-down from pinpointing told me it was time to head for the barn. Could have been the audio section took too much away from the dead batteries in Pinpoint.

Sunny Jim
 
great input!..thanks for taking the time to post!

(h.h!)
j.t.
 
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