morelic55 said:
Got a few keepers. The 705 and the 18.75 10" DD are winners...
Great, good finds, so you do not have totally frozen ground there! If you are not already using some, make sure you wear a good pair of soft padded
knee pads, so that the straps are comfortable, do not annoy you, and do not dig into the back of your legs. I know as I was a carpenter for over 20 seasons and wore them
alot.
morelic55 said:
Check out my most recient post. CW Camp, carpet of nails, no problem for the 18.75..........MO
Thanks! I am getting this round 10.5" HF DD coil in the mail in the next couple of days along with the 5x10" and 2 lower rods. I have not used one yet. I will give it a work out when the ground thaws or in an air test. Randy said to put coils with their rods in a tennis racket case(probably preferrably padded), for transportation or storage.
It
IS good to know the 10.5" HF DD can be used for Relic hunting successfully because most people seem to use the 10.5" MF DD instead.
I said, "...the 10.5" HF DD is not designed to be a yard hunting coil in iron trash. It does not work as well in iron(too well in fact) simply because it is a HF coil would also have some fits in heavy iron trash." "Yes it can be used for but it is NOT especially designed for clad, silver, and copper coin yard hunting....it is so sensitive to iron(low conductive), also very small junk targets, going deeper for these. BUT the benefit of this coil is it deeper and more sensitive to very small gold(and iron Relics)."
Actually it works too good in iron, and I have said before that the HF would be better than the MF for Relic hunting because it will pick up iron Relics better and deeper. But it was concluded that the HF will pick up tiny small micro sized iron pieces that are junk and the MF would ignore these better for Relic hunting.
BUT now that you say:=> "
Got a few keepers. The 705 and the 18.75 10" DD are winners."
and "
CW Camp, carpet of nails, no problem for the 18.75." That does change my mind somewhat and I am looking forward to using my 10.5" HF DD and I am glad I bought it instead of the MF!
http://www.findmall.com/read.php?55,1127217
This is what Randy(Digger) wrote recently on January 14, 2010 and he has some
very good advice here
:=> "As to the round 10.5 DD coils...... since the depth of detection is somewhat dependent on the width of the coil, the "wider" 10.5 round coils will be deeper than an elliptical coil of the same "length". From my observations, the large round DD coils have +/- 40% more depth than the elliptical.
I've found the 10.5 DD at 18.75 kHz to be more sensitive than the 10.5 DD at 7.5 kHz. As such, I usually have to lower the sensitivity setting to operate it without falsing. But with all those things considered, both are similar in performance, depth wise."
"There is so much to consider when chosing the proper coil for a particular application. I believe lower frequencies are better suited for higher conductive targets and higher frequencies are better suited for lower conductive targets. I believe that lower frequency coils will detect larger objects at greater depths and higher frequencies are more "sensitive" to smaller targets. I believe that DD coils neutralize the effects of highly mineralized ground much better than concentric coils, making the DD coils a far better choice in those applications. And I believe that larger coils hunt deeper than smaller coils, simply due to the size and shape of the electromagnetic lines of flux being tranmitted into the ground. So when chosing a coil, one must consider the size of targets they are seeking, the mineralization of the ground they are hunting and the amount of "trash" they are likely to encounter. Remember that any of the coils are capable of finding anything metal. It is simply a matter of chosing the best tool for the job. And there are more factors than simply the conductivity of target you are searching for."
I have one question for you, what is your setting on the X-70(5) for CW Camp and/or all Relic hunting?? (For example, a C & T Mode Disc. Pattern, All-Metal, or Prospecting Mode with Iron Mask set at max 20, etc.)