Lifting coil vs. smaller one

[doctorbb]

It occured to me that instead of purchasing a smaller coil for trashy areas that one could simply hunt with their coil raised off the ground a few inches, like when pinpointing a surface target. Since the signal is cone shaped then raising the coil makes the foot print smaller. You could even attach a guide or spacer temporarily to the coil bottom to help keep a constant ground clearance. Smaller coils sacrifice depth anyway so that would be a wash wouldn't it? Does this make sense to anyone else?

 

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[hollowpointred]

while the footprint of the raised coil would be smaller, you would also have greatly diminished depth. now small coils dont have the same depth as thier larger counterparts anyway, but i would imagine you would get much better depth with the smaller coil. also trying to swing the coil level and at the same distance every time would be an issue as well as you stated. perhaps a guide would work. hell, why not try it and find out? what have you got to lose.

 

[jeff of pa]

I Don't know about yours.
But I know Mine Hates air and as hollow says
You will loose depth much more then you would
with a small coil on the ground.

 

[Charlie P. (NY)]

Lifting the coil reduces sensitivity and you'd have to be careful to ground balance and then maintain a constant "hover". The detector would then still have a horrible time trying to figure that boundry layer between soil and coil and likely the circuitry would be averaging the whole area and results would suffer. You'd still be picking up surface trash near the edges.

A smaller coil gives you much better definition in the area it does cover.

 

[Digger]

A smaller coil works best, but raising the coil is the next best option. It does take a little practice but it does work quite well.