take a look at this device

[tomcatpl]

http://www.findmall.com/read.php?26,1408575

 

[Critterhunter]

What interests me more is shortening the coil cable to lower resistance and provide slightly more power to the TX winding in the coil. I even read a blurb somewhere were a tech said the FCC required the extra cable length on Sovereign/Excal coils to tame it down. Not sure if that's true, but I do know that the longer the wire the more resistance and thus less voltage being present at the coil. A shorter wire would also pick up less noise.

 

[OldBeechnut]

CH, I'm getting ready to cut the coil cable on the little 800 excal, guess I should do a few test before on a target in the ground........... figure I can take off about 43 inchs, leaving 45, do you thing that little bit will make a difference?

 

[Neil]

Joe I cut a bunch of them down a few years back, especially the coinsearch coil wires but never ran any tests on them. I did it to give the detector a cleaner look and loose a little weight. Minelab puts the longer coil wires on for hipmounting/chestmounting option.
I liked those grey wires they used to use, they didnt hold the curl from being around the rod like the newer black wires do. Ive got a couple of coinsearch coils and the coil wire is still that way.
You might find your anwer over on the sunray forum, when you get your coils new from sunray you can pick either short or long cables, at least thats how it used to be, so maybe Ralph would know about performance.

 

[Rick(ND)]

I had cut the cable down on the Coinsearch coil to try myself back a few years ago as it was just too long for me as I always used a meter so i didn't need that long of cable. I then took it to a old park site we had worked real hard and finds were rare to find anymore and found it run a little smoother for me and seem to be slightly more sensitive, was able to pick up a merc and a couple of wheaties I had missed before. I took it back the next day to see if it was just a fluke as to what i had found and got a merc and a silver rosie that were tough to get, but were able to pick them up so i had to take it back the next day again and if it would have done as good then i feel it did make a difference. The third day i didn't get any silver, but a wheatie and a buffalo nickle. I felt it made a difference, but Minelab and Ralph at Sun Ray says it shouldn't make a noticeable difference and maybe I was just more confidence, but I felt it made a difference for me anyway,
I used this coil at that well worked park and guy challenged me to find one old coin he missed in a area he worked to death with is GTI 1500, well i got many new and old coins he had missed and it even impressed me as how deep some of these coins were, but by going very slow and listening very close was able to get over 75 old coins and 18 new coins with some coins over 12 inches deep with a 8 inch Coinsearch coil.
I am sorry to say when i sold that one used Sovereign I had that coil on it when i sold it and got another 8 inch coinsearch coil, but haven't cut the cable down yet, but will.

Rick

 

[Critterhunter]

12" with an 8" coil is darn impressive.

The way I look at it every little bit helps. There is so little power going to the TX winding that even slight wire resistance can have an impact IMO. I may shorten my S5 coil since it'll never be used to water hunt.

 

[Critterhunter]

PS- Planning to use the S5 more this summer. It's got great depth at like 7 or 8" on a dime or more and of course nothing is going to unmask better. In my soil most machines using an 8 or 9" coil can't get past about 7.5" on a dime, except the GT of course, so I'm matching or beating their depth with much greater seperation ability. Think about it...what is left at old parks is moslty masked coins or deeper ones. You have to do one or the other to find them. I am also planning to start digging all signals above iron at one old trashy park in small 10 foot square grids. The S5 is important for this as a larger coil might null on a coin due to iron. Once the grid is clean I'll wait for it to heal a month or so and then use my 12x10 to see if deeper targets are present. Not only will this reveal masked coins, but also of course gold rings and other good finds. Do this at old parks that are trashy. Got to be a gold coin in there too some where. No site is ever hunted out until it's worked this way. I can work this big old park the rest of my life this way and plan to.

 

[Rick(ND)]

n/t

 

[jamesinwesttexas]

Question, when listening for those small weak signals are you listening for a particular type of tone or any signal? Also, I'm curious if the S5 has any better discrimination ability other than being able to seperate better. Which coil for the GT provides the best discrimination? Thanks.
James

 

[Critterhunter]

Physical size makes the smaalest coil the best to use at seperation, and in a way this improves discrimination in that there is less chance of a mixed signal which the machine might discriminate out.

As for deep whispers....I don't care what they sound like at first as a dee-p coin might sound like a low tone or junk until you get right over it and wiggle the coil right there.

 

[Ron from Michigan]

Rick,just shortened my Coinsearch coil cord to 4 feet.The last time I used the 8 inch Coinsearch I found a Barb dime and half dime at a well worked park.A week later I went back to the same park with the 10 inch Tornado and came up empty handed. HH Ron

 

[Rick(ND)]

n/t