Calabash Digger
Gold Member
- #1
Thread Owner
starting out it would be the 9 lf for me if I couldn't get it configured with the 9 hf... I love the nine inch coils.
One coil - 9" HF but since you can't purchase a Deus with a HF coil, I would get the 11" LF w/ the Deus and purchase a 9" HF after the fact. Elliptical HF comes in 3rd. 9" LF great but redundant if I have the 11" LF and 9" HF. No desire for the 11x13, performance/coverage does not justify the weight and added cost to get a 3rd party straight shaft setup to avoid flex on the stock shaft IMO.
I have used my 11X13 coil and have had amazing results. I will admit it is best used for open fields but the extra coverage means that much more ground is covered in a shorter amount of time. And I use the stock shaft with no issues at all. In fact I have it opened all the way out to notch #5 if not a little bit more because I am a taller guy. Yes it does weigh a little bit more but it's not overbearing. I have swung this coil at times anywhere from 8 to 12 hours in a day.
Pepperj the HF coil was made for miniscule bits in crap soil.
General rule lower the frequency for better penetration.
11khz probably best all around in high iron. I use 18khz all the time and can't get the pointer to find some of the bits I find.
A higher frequency makes iron sound better. I think you might lose it with a higher frequency in iron patches. My old fashioned PI I use at the beach would separate easier.
I have to mention I don't look at sceens or numbers. I only use sound so my opinion might be off to most.
Here is an alternate perspective. Note that the HF coils can be run as low as 13 khz so it can be run like a general purpose high conductor deep seeking coil (limited only by it's diameter) or can be run up high to improve separation in iron as well as illuminate mid-conductors (gold, brass relics) or small targets better. Because of that flexibility, it is now my general purpose, everyday coil. If I need more coverage or slightly more depth, I strap on the 11" LF. If I am working in restricted surroundings or need pinpoint separation then I use the elliptical. Oh, and the clincher for me is that the HF coils cost less than the LF coils.