curious

[wayne(mj)]

Very curious.

Is the DD 10.5 7 kHz coil suppose to have better separation than the concentric 9

 

[BarnacleBill]

DD's have better separation no matter what the soil type. See this very nice illustration from the FAQ by Nero.

http://www.findmall.com/read.php?55,677361,677361#msg-677361

Concentrics

Pros

1. More sensitive.
2. Better discrimination especially against bottle caps(steel)

Cons

1. Swings must be overlapped.
2. Less separation vs DD.
3. Cannot be run as hot in mineralized soil therefore depth begins to suffer.

DD

Pros

1. Better separation than concentrics.
2. No need to overlap swing therefore more territory can be covered quickly.
3. Operate at higher sensitivity levels in mineralized soils.

Cons

1. Not as sensitive as concentrics.
2. Bottle caps(steel) can be a challenge.
3. Some find pinpointing a challenge after having used concentrics for a long time.

HH
BarnacleBill

 

[wayne(mj)]

n/t

 

[wayne(mj)]

Hey Bill that was a great link , it set me staight on alot of things Thank you very much.