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#1

Alienslayer
Member
Joined: 26 November 2019
Posts: 101
Member
12 February 2021 03:04 pm

G'day everyone after going through multiple detectors i think i've actually found a really decent one i want to hang onto!!!

The QED PL3.

I've been amazed at how great these detectors actually are!

They are capable of picking up sub gram gold but at the same time also take over a wide variety of minelab coils as well as very highly adapatable to other parts!

Incredibly impressed... i wont be getting rid of this one for a long time!!!

I'm currently using the 8x6 saie coil and 15 NF evo coil with this machine.

It was very easy to use and heck heres some photos of my last adventure with it and a 0.14g piece it picked up 3 inches down!

1613102655_144275269_3971198142899428_7240924700261006438_n.jpg
1613102655_144339389_3971198269566082_843310971911820027_n.jpg
1613102655_144830013_3971198239566085_7247386459873600794_n.jpg
1613102655_144844665_3971198406232735_1159231621715166286_n.jpg
1613102655_145019769_3971316949554214_95343353069448891_n.jpg

7 users like this post: grubstake, Reg Wilson, numpty, Евгений, 7.62marksman, Wishfull, Syndyne

#2

cqoz
Newbie
Joined: 31 January 2021
Posts: 6
Newbie
12 February 2021 03:35 pm

Hi, I just bought a QED pl3, and i am having trouble understanding what THS-B is really for and the relationship between THS B & A, also how do you find the best settings in an area you are about to detect, I will be using the sadie coil, Thanks.

#3

Alienslayer
Member
Joined: 26 November 2019
Posts: 101
Member
12 February 2021 03:40 pm

cqoz wrote:

Hi, I just bought a QED pl3, and i am having trouble understanding what THS-B is really for and the relationship between THS B & A, also how do you find the best settings in an area you are about to detect, I will be using the sadie coil, Thanks.

G'day from what i understand THS A is about 30-40 for smaller coils and 50-60 for bigger coils threshold volume basically but it also impacts on depth of the detector coil

gain doesn't mean much it makes very low difference so just run a stable gain and dont pay too much attention to it

THS B is basically bias so you can bias the detector for smaller shallower targets or larger deeper targets or null for both

you pretty much start u the machine choose a mode

so example the sadie coil 8x6 mode 1-3 whatevers stable

then you go ok THS B lower the number until it makes a noise. then raise it until it makes a noise. the middle number in between is called the null
So example its noisy at 40 noisy at 60 the middle number is 50 make sense thats the bias so -2 of that is 48 considered -2 bias and 52 is +2 bias for either smalle ror larger targets

i hope that helps you out heaps!

Last edited by Alienslayer (12 February 2021 03:43 pm)

1 user likes this post: Reg Wilson

#4

Alienslayer
Member
Joined: 26 November 2019
Posts: 101
Member
12 February 2021 03:43 pm

cqoz wrote:

Hi, I just bought a QED pl3, and i am having trouble understanding what THS-B is really for and the relationship between THS B & A, also how do you find the best settings in an area you are about to detect, I will be using the sadie coil, Thanks.

In addition to that for my sadie 8x6 advantage coil i use the following settings

MODE 1
Gain 8
THS A 35
THS B -2 bias usually about 47-48
MGB as low as it'll let me go to balance the detector usually in heavily mineralised soils anywhere from 118-135 varying alot!!!

MGB you basically listen to the pitch of the detector when you pump the coil. So i'm not 100% sure which way to go! but initially i lower it by holding the button down while pumping until it shuts the machine up lol...

In addition to that if i'm swinging my coil slowly and its still making random noises that's usuall an indication gain is set too high... so lower the gain or lower THS A

I hope i've given the right information here and hopefully someone can correct me if i'm wrong too but it works for me!!!

1 user likes this post: Reg Wilson

#5

Alienslayer
Member
Joined: 26 November 2019
Posts: 101
Member
12 February 2021 03:45 pm

cqoz wrote:

Hi, I just bought a QED pl3, and i am having trouble understanding what THS-B is really for and the relationship between THS B & A, also how do you find the best settings in an area you are about to detect, I will be using the sadie coil, Thanks.

for the 15 inch NF evo coil i am yet to get a true indication of it's settings but i've been told that mode 5 works and a gain of 5 works also but i would run it in NULL so it'll pick up smaller and larger targets and not favour either..

They also told me THS A of 60 ish works well on it

#6

cqoz
Newbie
Joined: 31 January 2021
Posts: 6
Newbie
12 February 2021 06:32 pm

Thanks so much for your help Alienslayer, I'm in Central Qld. I will receive my QED pl3 in about a week, bought 2nd hand.
Apparently they are as good as the Minelabs ?

1 user likes this post: Reg Wilson

#7

cqoz
Newbie
Joined: 31 January 2021
Posts: 6
Newbie
13 February 2021 08:42 pm

Hi Alienslayer, Whats the real point in ever increasing THS-A to higher that say 30, because at 30 you get the bet range of THS-B at up to -7 below null and +7 above null, meaning you can concentrate better on tiny or just large targets ???

1 user likes this post: Elijah

#8

cqoz
Newbie
Joined: 31 January 2021
Posts: 6
Newbie
20 February 2021 08:42 pm

Him AlienSlayer, I just got my PL3 on Thursday, did some testing with a lead sinker cut into small pieces, one was 0.56 gram - good signal.

One was 0.2 gram, no signal at all, even touching the Sadie coil in Air test, there must be something wrong with my machine or coil, because everyone seems to be able to signal on bits like that at even 3 inches.

#9

hippyhunter
Member
Joined: 06 November 2017
Posts: 518
Member
22 February 2021 02:16 pm

Cqoz, should be able to get 30mm+ on a .1 nugget.
Maybee do a check on all your wites and plugs to make sure they are all firmly seated in place (including ribbon cable).
When i am doing the air test i prefer to have coil flat on the ground and wave target above coil. (Not on bench or high in the air to achieve stability for me)
Put her in mode 1, crank gain to 10, then adjust thsb down until your threshold is smooth (dont be scared to drop it right down to low 20's so the threshold is screaming, but solid, then back it up a couple from there (can lower the tone if preferred) Try air test at different thsb settings.
Lowering thsb that low is not something ive really heard of before but it works on my machine providing a smooth threshold and best depth on <.1g

P.s. i am also running a booster amp to acheive these settings. They may or may not work without amp

Last edited by hippyhunter (22 February 2021 02:19 pm)

#10

pinfire opals
Member
Joined: 16 February 2019
Posts: 415
Member
23 February 2021 02:24 am

hippyhunter wrote:

Cqoz, should be able to get 30mm+ on a .1 nugget.
Maybee do a check on all your wites and plugs to make sure they are all firmly seated in place (including ribbon cable).
When i am doing the air test i prefer to have coil flat on the ground and wave target above coil. (Not on bench or high in the air to achieve stability for me)
Put her in mode 1, crank gain to 10, then adjust thsb down until your threshold is smooth (dont be scared to drop it right down to low 20's so the threshold is screaming, but solid, then back it up a couple from there (can lower the tone if preferred) Try air test at different thsb settings.
Lowering thsb that low is not something ive really heard of before but it works on my machine providing a smooth threshold and best depth on <.1g

P.s. i am also running a booster amp to acheive these settings. They may or may not work without amp

Been sorted HH, wasnt ground balanced properly. lol

#11

Reg Wilson
Member
Joined: 06 September 2017
Posts: 769
Member
23 February 2021 09:59 pm

Being a manually ground balanced detector, the QED presents a bit of of a challenge until one gets the hang of it. Once familiarity is achieved it comes as second nature in getting a functionable tuning. When well tuned the QED achieves surprising useability.


Walmer Central Victoria
Began detecting 1979 Best colour 3Kgs Best patch 340 ozs.

#12

hippyhunter
Member
Joined: 06 November 2017
Posts: 518
Member
Yesterday 02:17 pm

pinfire opals wrote:
hippyhunter wrote:

Cqoz, should be able to get 30mm+ on a .1 nugget.
Maybee do a check on all your wites and plugs to make sure they are all firmly seated in place (including ribbon cable).
When i am doing the air test i prefer to have coil flat on the ground and wave target above coil. (Not on bench or high in the air to achieve stability for me)
Put her in mode 1, crank gain to 10, then adjust thsb down until your threshold is smooth (dont be scared to drop it right down to low 20's so the threshold is screaming, but solid, then back it up a couple from there (can lower the tone if preferred) Try air test at different thsb settings.
Lowering thsb that low is not something ive really heard of before but it works on my machine providing a smooth threshold and best depth on <.1g

P.s. i am also running a booster amp to acheive these settings. They may or may not work without amp

Been sorted HH, wasnt ground balanced properly. lol

Ahh good stuff pinfiro. I thought it would be something simple. thumbsup


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