In house tests - Gold Bug Pro with F5 stock coil

[BH_Landstar_]

Air tests with the stock F5 coil attached to the Gold Bug Pro. Test was done in DISC mode with a gain setting of 80 running silent. A higher gain caused too much chatter. DISC was set to 40.

Note: The nail was also tested with it laying flat to the coil, max distance was 7 inches compared to 10 with the point of the nail towards the bottom of the coil. This was also found to be the case with the 5" DD coil that came with the Gold Bug Pro.

I've added a picture of the base of the F5 stock coil so that you can see what it looks like. It's a 10" coil.

The gold chain was picked up at 4.5" while I was holding both ends (the clasps) in my hand, while the rest was left hanging. The hanging section was detected and not the clasps.

 

[gmanlight]

BH interesting results but i think it adds to the confusion.
Someone reading this will think concentric coils are good to go on the GB.
This can be a hit or miss or bad performance as clearly written by Dave Johnson in thread above.
I would hate for people to buy this coil only to find it does not work
or worse, suffer performance loss and never know it and assume there machine is weak,.

 

[tabman]

Thanks for doing that test. I was hoping that the 10" coil would work well on the Gold Bug Pro, because the 11" DD coil might be a little too heavy for me swing all day, since I have a bad elbow. If you get a chance, see how the 10" coil pinpoints compared to the 11" DD coil. I bet the 8" round coil off the Gamma would work also.

 

[BH_Landstar_]

BH interesting results but i think it adds to the confusion.
Someone reading this will think concentric coils are good to go on the GB.
This can be a hit or miss or bad performance as clearly written by Dave Johnson in thread above.
I would hate for people to buy this coil only to find it does not work
or worse, suffer performance loss and never know it and assume there machine is weak,.

All down to trial and error. If they have a coil with the same plug from another detector, there is nothing stopping them from trying it out.

This is in no way an indication or endorsement for someone to go and buy this coil, as Dave J said, it's a hit or miss venture.

I did this test to see if it would work based on info from Dave J and info from a website that sells detectors and coils. The 5" DD coil is listed for the F5 and Gold Bug SE / Pro.

 

[BH_Landstar_]

Thanks for doing that test. I was hoping that the 10" coil would work well on the Gold Bug Pro, because the 11" DD coil might be a little too heavy for me swing all day, since I have a bad elbow. If you get a chance, see how the 10" coil pinpoints compared to the 11" DD coil. I bet the 8" round coil off the Gamma would work also.

The pinpointing seems to be an inch - two inches less in tests, more testing is needed out in the field.

 

[BH_Landstar_]

This is quoted from one of Dave.J's posts.

'The new Bug (and also Tek G2) are designed to work with the Tek "Greek series" (also known as "Frat Bros.") series DD searchcoils, which at this time (Nov 2010) consists of a 5 inch round and an 11 inch elliptical.'

Now the Teknetics "Greek series" of detectors also use the Teknetics 10" Elliptical Search Coil (Delta, Gamma, Omega, Alpha), this is the same coil that comes as standard on the F5, and that is why this test was carried out.

 

[chuck ky]

does it pick up the gold rings and nickles deeper because it is designed for gold. since it picks up the nail so deep what does 40 knock out on the disc.

 

[BH_Landstar_]

It picks the nickels and gold and the nail deeper because they are low conductors compared to the coins and silver rings. It's designed to hit the lower conductors hard.

DISC set at 40 all items like silver, gold and nickels give off a high tone due to having a higher VDI number, but some gold will come in under the 40 range, in the 30's like the gold earring that's in the picture in my 1st post. Iron is also a low conductor. Anything under the 40 DISC setting has a low tone. The beauty with the Gold Bug SE / Pro and the G2 is that you can set the low / high tone break-point.

For a more details, read the manual for the Gold Bug / G2 on the DISC setting or watch the video's on You tube.

 

[D&P-OR]

Yeah, that new adjustable tone break is GREAT.---I love that feature!

 

[chuck ky]

so at 40 its really not a disc. control but it sets the tone.

 

[BH_Landstar_]

Yes and no ! The higher the DISC setting, the lower ID's are taken out ..... if the DISC setting is set to 80 for example, all objects under 80 are DISC'd out and no tone, only silver, and coins are seen with a high tone over the 80 mark.

To get an idea of the way the DISC mode works look up the videos on the Gold Bug SE / Pro / G2 on Youtube.

 

[sgoss66]

So, I'm confused. I have an F70 that comes stock with the 10" elliptical concentric coil, and I bought the 5" DD coil for it. Is this the same 5" DD coil that is used on the GB SE/PRO? If so, then I should get the GB DP package, and would end up with the 11" DD coil (from this detector), the 5" DD I have, and the 10" elliptical concentric, and these coils would be interchangeable with both detectors (especially the DD coils). Is this right?

Thanks,

Steve

 

[BH_Landstar_]

This should help ...... (taken from another post)

The new Bug (and also Tek G2) are designed to work with the Tek "Greek series" (also known as "Frat Bros.") series DD searchcoils, which at this time (Nov 2010) consists of a 5 inch round and an 11 inch elliptical.

Some people have gotten creative and plugged in other searchcoils from the FratBros and F75 series just to find out what happens. Results have been mixed. Because of manufacturing variation in searchcoils some individual ones of a particular type may "work" and others may not work. The ones that "work" may in fact exhibit subtle performance deficiencies, or may seem to work fine today but not tomorrow.

FTP-Fisher explicitly un-recommends that people purchase anything other than searchcoils specified for use with these units. But if you have one of our other searchcoils anyway, there's nothing to stop you from plugging it in just to see what happens. It won't damage the machine. Note however that Tek T2 searchcoils flat out won't work, they're wired different.

Does this help now ?

 

[sgoss66]

BH_Landstar, it helps SOME. But I am not clear if the "Greek series" DD coils are the same as the F70/F75 DD coils. If they ARE, then logic says that the F70/F75 DD coils are also compatible with the Gold Bugs. See what I'm saying? Dave J. says specifically that the Bugs were designed to use DD coils, and my F70 HAS a 5" DD coil. I wouldn't want to use the F70 10" elliptical concentric, as he specifically says the Bugs use DD coils. However, if my 5" is compatible with the "Greek series," then I guess it is by default compatible with the Bugs. The only other thing he specifically says, is that Tek T2 coils flat out won't work. Don't know about F70 DD coils, though.

Steve

 

[BH_Landstar_]

I am not sure if the F7X coils will work on the greek series of detectors, but I am sure someone will know.

As I don't have a F7X of any kind, I can not test it out etc. Best people to ask are those at FTP really.

And I'll re-quote Dave J.

[quote Dave J.]Some people have gotten creative and plugged in other searchcoils from the FratBros and F75 series just to find out what happens. Results have been mixed. Because of manufacturing variation in searchcoils some individual ones of a particular type may "work" and others may not work.[/quote]

So, take it at face value !