F75 and cellphones

[Greg (E.Tn)]

Actually this happened w/ a T2 but I figure it will probably apply to the F75 as well.

I was detecting w/ a friend who was using the T2 awhile back,and during a brief lull in detecting he complained about difficulty ground balancing his machine, and erratic operation. He said that occasionally, while detecting, his machine would suddenly go haywire, with multi-tone beeps and numbers jumping all around, regardless of sensitivity settings, disc., etc.

At first, one would suspect power line interference, but we were out in the boonies, so I asked him if he was carrying his cellphone--turned out he was.

He turned his cellphone off and his machine ran smooth the rest of the day, groundbalanced just fine, etc..

What we THINK was going on w/ the cellphone is, because of the remote area we were in, the phone would occasionally lose signal and start "searching" for a signal. This would explain why the problem was an occasional one, rather than a constant one.

Also, apparently the cellphone doesn't even need to be on your person to cause interference--if you're detecting w/ a friend and he's carrying a cellphone, it can cause interference if you're in close proximity to it.

Anyway, hope this might help with anyone who's had similar problems.

 

[jim tn]

I've never carried my cellphone afield with me and just leave it in my vehicle. As I mainly coinshoot, I am neve to far away and occasionally check it. I, however, have hunted with guys that had their cells with them and on occasion have experienced what you describe. I think this happens more then a lot of us realize and we end up scratching our heads, so to speak, wondering whats going on at times with our detectors. Good reminder, Greg. HH jim tn

 

[gates21]

This quote is pulled directly from fisherf75.com
"A cellphone, even on standby, is a huge interference source !!!! Turn it off !!!"

I have never really noticed a big difference even with it on. Maybe it depends on the cell phone?

 

[Daniel Tn]

I noticed this one as well at the DIV hunt. I have a cell phone but have a bad habit of leaving it at the truck. At the DIV, I had no choice but to carry it with me. I too was running into the interference issue and couldn't figure out where it was coming from. Mine will go crazy just before someone calls me or sends a text message to me. My uncle called me twice in a row and when the detector went crazy both times, I figured out what it was...turned the phone off and my smooth machine was back.

 

[Robby]

Im lucky i guess.... iv'e yet to experience interference from my cell. I swing right handed so i put the cell in my left pocket. It does go crazy if i get someone calling me/