Anyone have any insights? I have that orange battery holder from the Ukraine, couple rnb batteries,,,, but want to try out 1 of the 16v. Redman won't mail international. Anyone try building 1 with photos? Say 10 aa batteries (mod battery door and tray) or stronger v batteries. Hands are pretty tied where I am so can't really experiment
↧
16v battery... how to (12 replies)
↧
Will this make my tdi explode (27 replies)
Talked to Redman briefly through email. He said it should be ok. Can anyone concur before I turn it on? Would hate to fry it
↧
↧
TDI pro beach ? (8 replies)
What's the best way to set up the tdi pro for salt beach? I hear mixed opinions about ground balancing or not ground balancing. Any help is greatly appreciated thanks
John
John
↧
Added probe to TDI, (2 replies)
Was determined to add an inline probe to the TDI, Thanks to Reg it happened.
I know TDI inline probes are scarce, Reg had an extra one and shared the connector pin connections along with other important information. Yesterday, Solderer a second connector with a toggle switch between the two connectors.
At the time, Didn't know other Eric Foster probes worked with the TDI. Already having a GoldQuest probe this morning soldered on a connector and sure enough it works with the TDI. It's the longer stick type, the probe Reg passed to me is much smaller lighter yet defects as deep as the yellow longer probe.
TDI is currently one of my gold jewelry detectors for schools and parks, it does well with low conductive target's ratio of iron or hair pins is very low. What fools me are hair pins and thin wire, overall very good and fun to use. Below is a pic of recent cheap costume jewelry finds, and one 14k ring. The Mojave found the 14k, recently added a GB pot and second discrimination disc pot for checking gold jewelry with the Mojave. Normally use the TDI, But on this particular day was testing the added discrimination check pot to the Mojave and surprisingly piece of gold surfaces.
This TDI is not a Pro model it is a regular model with all of Reg's mods, now with inline probe. Thanks for looking and thanks Reg for the probe and help.
Paul
I know TDI inline probes are scarce, Reg had an extra one and shared the connector pin connections along with other important information. Yesterday, Solderer a second connector with a toggle switch between the two connectors.
At the time, Didn't know other Eric Foster probes worked with the TDI. Already having a GoldQuest probe this morning soldered on a connector and sure enough it works with the TDI. It's the longer stick type, the probe Reg passed to me is much smaller lighter yet defects as deep as the yellow longer probe.
TDI is currently one of my gold jewelry detectors for schools and parks, it does well with low conductive target's ratio of iron or hair pins is very low. What fools me are hair pins and thin wire, overall very good and fun to use. Below is a pic of recent cheap costume jewelry finds, and one 14k ring. The Mojave found the 14k, recently added a GB pot and second discrimination disc pot for checking gold jewelry with the Mojave. Normally use the TDI, But on this particular day was testing the added discrimination check pot to the Mojave and surprisingly piece of gold surfaces.
This TDI is not a Pro model it is a regular model with all of Reg's mods, now with inline probe. Thanks for looking and thanks Reg for the probe and help.
Paul
↧
Looking at adding a large square coil for my TDI Pro :wink: (1 reply)
Have located a square framed coil for the TDI Pro,have just made the frame up and this cost peanuts as its made from 3/4'' waste pipe and the coil wire is attached by using velcro.
The actual dimensions are 2mtrx2mtr or about 6+ftx6+ft so its pretty big when its put together,but by using dry joins rather than glued ones so that it can be taken apart for transportation.
Standart type coil 2x2m. Can use it of any PI detectors.
Coil data:
Resistance-3om.
Inductance-It depends on the form which is used.
For 2x2m. about 550-600uh
Pretty certain that the coil will work almost straight out the box,of course it wont detect small items as its main targets will be hoards and massive deep artifacts,only problem that i may come across is location of the control box that would normally be either chest mounted or hip mounted but of course as one would normally suspend these types of coils from 2 straps from either should,what i am thinking is that the coil could well pick the control box up as well.
So if i do have problems of control box pickup will be to have a 2nd person carry the control box outside of the coil,the made up coil should take 2-3 weeks to arrive,so will update on the results,should give me some additional depth over the stock 12'' DF coil :rofl:
The actual dimensions are 2mtrx2mtr or about 6+ftx6+ft so its pretty big when its put together,but by using dry joins rather than glued ones so that it can be taken apart for transportation.
Standart type coil 2x2m. Can use it of any PI detectors.
Coil data:
Resistance-3om.
Inductance-It depends on the form which is used.
For 2x2m. about 550-600uh
Pretty certain that the coil will work almost straight out the box,of course it wont detect small items as its main targets will be hoards and massive deep artifacts,only problem that i may come across is location of the control box that would normally be either chest mounted or hip mounted but of course as one would normally suspend these types of coils from 2 straps from either should,what i am thinking is that the coil could well pick the control box up as well.
So if i do have problems of control box pickup will be to have a 2nd person carry the control box outside of the coil,the made up coil should take 2-3 weeks to arrive,so will update on the results,should give me some additional depth over the stock 12'' DF coil :rofl:
↧
↧
TDI Pro - External Battery Pack (10 replies)
Got creative recently and made an external battery pack for my TDI Pro - mostly because the stock battery was no longer available when I purchased my machine (no spare battery), and the stock battery it came with doesn't last very long in the field (about 4 hours of good power). The stock battery is 14.4 volts / 4.8 amp hours.
The new battery pack consists of 12 rechargeable "C-cell" NiMH batteries, wired in series (1.2 volts each x 12 batteries = 14.4 volts) held together using two 6 "C-cell" battery holders wired together "+" to "-". Fresh off the charger the voltage measured a safe 15.69 volts (less that the 18.5 volt maximum for the TDI Pro). Each battery is rated at 5000 mAh (5 amp hours = 1 amp draw for 5 hours), and when all 12 are connected in series it has 60,000 mAh (60 amp hours = 1 amp draw for 60 hours).
The TDI Pro draws 0.6 amp, so from a full charge to zero power = 100 hours (60 divided by 0.6). Naturally, battery capacity ratings are typically overstated so actual performance is less.
The bottom line is that this battery has a LOT of stored power, and I can to hunt for several days without having to worry about a low battery. No need to carry a spare battery either. Recharging is pretty fast - I recharge all 12 batteries at once in 3 EBL chargers - it takes about 3 hours.
The new external plug-in does not defeat the original design, so you can still use the stock battery inside the box by itself if you want. The cost to assemble everything was reasonable (12 batteries, 3 chargers, 1 pouch, 1 web belt, 2 battery holders, and assorted wiring) worked out to be less than the price of a new stock battery.
Pros: Long battery life (14.4 volts / 60 amp hours)
Lighter metal detector (stock battery removed)
Fast recharge time
Cons: Batteries must be removed from holder for re-charging
Battery pack is carried on your waist with a web belt
The new battery pack consists of 12 rechargeable "C-cell" NiMH batteries, wired in series (1.2 volts each x 12 batteries = 14.4 volts) held together using two 6 "C-cell" battery holders wired together "+" to "-". Fresh off the charger the voltage measured a safe 15.69 volts (less that the 18.5 volt maximum for the TDI Pro). Each battery is rated at 5000 mAh (5 amp hours = 1 amp draw for 5 hours), and when all 12 are connected in series it has 60,000 mAh (60 amp hours = 1 amp draw for 60 hours).
The TDI Pro draws 0.6 amp, so from a full charge to zero power = 100 hours (60 divided by 0.6). Naturally, battery capacity ratings are typically overstated so actual performance is less.
The bottom line is that this battery has a LOT of stored power, and I can to hunt for several days without having to worry about a low battery. No need to carry a spare battery either. Recharging is pretty fast - I recharge all 12 batteries at once in 3 EBL chargers - it takes about 3 hours.
The new external plug-in does not defeat the original design, so you can still use the stock battery inside the box by itself if you want. The cost to assemble everything was reasonable (12 batteries, 3 chargers, 1 pouch, 1 web belt, 2 battery holders, and assorted wiring) worked out to be less than the price of a new stock battery.
Pros: Long battery life (14.4 volts / 60 amp hours)
Lighter metal detector (stock battery removed)
Fast recharge time
Cons: Batteries must be removed from holder for re-charging
Battery pack is carried on your waist with a web belt
↧
Best Waterproof Coil for the TDI Pro? (9 replies)
Shame all of Miner John's products are not waterproof they look like great products. Anything else available that offers some performance gains over the stock?
cjc
cjc
↧
TDI as a Beach Machine (17 replies)
On a freshwater black sand beach, there's no way you could run say, a GQA2 at its fastest delay--down near 10 uSc. I'm learning that the TDI is no different and although this is its deepest setting the tradeoff is instability and reduced depth. When you bring it up to about 14 or 15 uSc (10:00 o'clock) the warble settles down a lot. This lets you use more gain. I realized that the in air performance was just that--at high Gain or 10 uSc. With the GQ this is more obvious--sounds like hell. With the TDI though it doesn't sound that bad with slightly lowered Gain, but the "one-way" responses are an indicator that the signal is not penetrating--there's a lag--almost like when you run a PI with mismatched phones. I'm not even using the GB--still a lot to learn.
cjc
clivesgoldpage.com
cjc
clivesgoldpage.com
↧
Headphones for TDI Pro ??? (6 replies)
I recently purchased a used , good condition TDI Pro. What is the best headphone for it. I will be using it mainly for the salt beach. . Thanks for the Help....HH Tim
↧
↧
White sale (28 replies)
I just got a note from Whites about a clearance sale and there were a couple TDI coils at a ridiculous price. If you are looking for deal sniff White's.
↧
TDI coil (6 replies)
Anyone had experience with this coil?
↧
Which TDI to buy? (3 replies)
So im looking to add a PI machine back into my arsenal. Had an Infinium a few years back which I really liked, but I wanted to possibly try out a TDI this time around. My old hunting buddy had an SL and it frustrated him to no end. My infinium was easy to use and i found some great relics. I was wondering which model of the TDI i should look out for? Older big box or the pro or sl? Im primarily using it for land relic hunting only. Thanks for any advice.
↧
TDI and TDI Pro (4 replies)
Some people think there is some magical difference between the TDI and the Pro, but there isn't . The truth is, both use the same motherboard and only differ by these three things. First, the Pro has a vernier GB control which is done by simply inserting another pot in one of the GB pot wires. Next, the internal volume control on the TDI is removed and a new pot is soldered to the motherboard in place of the removed volume pot used on the regular TDI. Finally, here is the real important difference and that is two capacitors are changed to different values.
The TDI has .22uf caps and the Pro has .10uf caps on the differential integrator stages. Now here is the beauty, change these two caps on the TDI and you have a "poor man's" TDI Pro. The vernier GB pot isn't needed here in the US nor is the volume control.
Owners who had The mods done to reduce the noise and had the "Pro" capacitor change mod already have this capacitor change and already do have an improved poor man's Pro. I say improved because they have the noise reduction mod that is already in the SL.
Actually, the TDI noise reduction mod it is an improved version of the SL mod that makes the SL threshold so quiet. Actually, SL's made from 2015 and later have the improved version also. In late 2014 a strange "hiccup" noise was causing serious concerns in Australia on a version of the SL called the SPP (Sierra Pulse Pro). With help of Alan Holcomb (then retiring CEO of Whites providing equipment and the assistance of Luke Lindsay who lives in Australia, we managed to solve the hiccup problem. This simple mod now installed in SL motherboards since late 2014 makes the later produced SL much easier to ground balance without hurting the noise reduction. (Earlier SL's could benefit from these "hiccup" mods also).
I mention this because there is a guy who just may be doing the TDI and SL mods in the future. I will mention more when the time is right. Hopefully, that will be soon.
Reg
The TDI has .22uf caps and the Pro has .10uf caps on the differential integrator stages. Now here is the beauty, change these two caps on the TDI and you have a "poor man's" TDI Pro. The vernier GB pot isn't needed here in the US nor is the volume control.
Owners who had The mods done to reduce the noise and had the "Pro" capacitor change mod already have this capacitor change and already do have an improved poor man's Pro. I say improved because they have the noise reduction mod that is already in the SL.
Actually, the TDI noise reduction mod it is an improved version of the SL mod that makes the SL threshold so quiet. Actually, SL's made from 2015 and later have the improved version also. In late 2014 a strange "hiccup" noise was causing serious concerns in Australia on a version of the SL called the SPP (Sierra Pulse Pro). With help of Alan Holcomb (then retiring CEO of Whites providing equipment and the assistance of Luke Lindsay who lives in Australia, we managed to solve the hiccup problem. This simple mod now installed in SL motherboards since late 2014 makes the later produced SL much easier to ground balance without hurting the noise reduction. (Earlier SL's could benefit from these "hiccup" mods also).
I mention this because there is a guy who just may be doing the TDI and SL mods in the future. I will mention more when the time is right. Hopefully, that will be soon.
Reg
↧
↧
TDI Field Guide (1 reply)
Didn't know this existed--great info.
http://www.bigvalleymetaldetectors.com/whites/tdi_field_manual.pdf
cjc
clivesgoldlpage.com
http://www.bigvalleymetaldetectors.com/whites/tdi_field_manual.pdf
cjc
clivesgoldlpage.com
↧
2016 and up SL version (8 replies)
Anyone know if the SL version for 2016,2017 is mounted on a different shaft than the standard S shaft ? Almost looks like the Pro version shaft.
1 of my competitors just bought 1 and it's not an S shaft
thanks
1 of my competitors just bought 1 and it's not an S shaft
thanks
↧
Need help (5 replies)
I'm new to the TDI SL AND NEED SOME HELP. I'm in Virginia doing a civil war relic hunt and found a button and a pistol ball with my AT Pro. I dug an 8" deep hole and put the eagle button in the bottom and swung the TDI SL over the hole to hear what a good signal sounds like. It sounded great. Next I removed the button and dropped the pistol ball into the hole and swung over the hole. THE TDI SL did NOT pick it up.
WHY?
How do I set it up to hear a lead bullet?
Here are my settings
Gain - 6
Pulse delay - 10
GEB - on
Threshold - 12 o'clock
Frequency - 12 o'clock
Conductivity - All
WHY?
How do I set it up to hear a lead bullet?
Here are my settings
Gain - 6
Pulse delay - 10
GEB - on
Threshold - 12 o'clock
Frequency - 12 o'clock
Conductivity - All
↧
Couple of more silvers, (2 replies)
Been scoring several deep coins from two old parks these recent weeks, a good friend and I are getting masked coins with our Pi's.
Switched to using my two smallest coils with the TDI, 6" x10" folded and 8" x12" folded. What I'm finding is the TDI can get masked coins between the trash with smaller coils, today dug 8 coins between 6.5" to 7.5" inches deep with the 6" x10" mono. 7 wheat's and a Mercury dime, our Explorers and upper end VLF can't touch these type of masked signals.
These are not deep finds by any means, but due to masking they are beyond reach from our top end detectors. What's exciting is, Now we can go back to our old pounded parks and get these masked signals with our Pi's.
Recently upgraded to one of Reid's battery packs, and with the help of Reg coaching me with a minor change to my TDI for increased gain. Between the higher voltage battery and increased gain, Added about an inch depth to each of my TDI coils.
TDI is a great park machine, plant your feet on old park soil and the TDI will not let you down. Remarkable, And that's an understatement for this fun pi.
Pictured are today's finds on the 6" x 10" mono, and recent finds the past several weeks. Plus, Take a look at the Periscope probe thin rod in the ground, after locating the coin took a quick pic. It measured 7.25" inches in depth and the coin was actually the silver dime, was using the side of a Whites pin pointer as a ruler to measure depth. My deepest park coin is a measured 10.5" inches, had a few at this depth but the bulk of them are between 6" to 9" inches.
Thanks for looking, and thanks Reg for the mod coaching. Appreciate the help!
Paul
Switched to using my two smallest coils with the TDI, 6" x10" folded and 8" x12" folded. What I'm finding is the TDI can get masked coins between the trash with smaller coils, today dug 8 coins between 6.5" to 7.5" inches deep with the 6" x10" mono. 7 wheat's and a Mercury dime, our Explorers and upper end VLF can't touch these type of masked signals.
These are not deep finds by any means, but due to masking they are beyond reach from our top end detectors. What's exciting is, Now we can go back to our old pounded parks and get these masked signals with our Pi's.
Recently upgraded to one of Reid's battery packs, and with the help of Reg coaching me with a minor change to my TDI for increased gain. Between the higher voltage battery and increased gain, Added about an inch depth to each of my TDI coils.
TDI is a great park machine, plant your feet on old park soil and the TDI will not let you down. Remarkable, And that's an understatement for this fun pi.
Pictured are today's finds on the 6" x 10" mono, and recent finds the past several weeks. Plus, Take a look at the Periscope probe thin rod in the ground, after locating the coin took a quick pic. It measured 7.25" inches in depth and the coin was actually the silver dime, was using the side of a Whites pin pointer as a ruler to measure depth. My deepest park coin is a measured 10.5" inches, had a few at this depth but the bulk of them are between 6" to 9" inches.
Thanks for looking, and thanks Reg for the mod coaching. Appreciate the help!
Paul
↧
↧
Added some depth to the TDI (20 replies)
Recently, Reg suggested I make change to my TDI. This is information he has posted before, with his permission I'm going to share my experience's with adding this mod.
My TDI has the preamp mod with the better IC, What this did was improve stability it's very smooth. Thus, Allowing more gain in area's with EMI or areas one may have issues with noise.
One of the other mod is shorting out a capacitor, This eliminates a third filter. Reg explained what I needed to do, followed his instructions and completed the mod. With this particular mod, Greatly adds depth and now the faint one way signals are a two way signal. Earlier, I was generous and mentioned it added an inch in depth. But it actually adds more under right conditions, was amazed seeing the extra depth.
Later, Added a switch so I can use the mod with either on or off position. Didn't have too, But I like knowing can always switch back to stock performance with the flip of a toggle switch or to boost mode when ground conditions allow. Without the switch, the user will need to reduce gain if they want too hunt in areas to reduce noise. This added switch with the lead's hasn't shown an issue, and it may but so far I'm not seeing any problems.
Shorting this particular capacitor was one of the mods Reg and his friend Paul were doing, Reg has this information out there on the Internet if you want to Google it.
Also, Recently purchased one of Reid man's battery's. Wow, well made and it auctally added some depth. However, The mod I'm sharing above greatly increases depth and strengthens those weak signals. From both air testing and from my test bed, anywhere from 1 to 2 inches depending on the size coil.
With Reg's permission, here are a couple of pictures with the shorted capacitor mod eliminating the third filter. I've added a switch with the leads soldered to the cap, Secured with heat sink tubing to secure the soldered wires with the capacitor so it doesn't wiggle loose out in the field.
I know Reg has mentioned this before, and I agree please don't do these mods unless you are comfortable with these things.
Thanks to Reg, the old TDI can be a TDI Pro.
All the best,
Paul
My TDI has the preamp mod with the better IC, What this did was improve stability it's very smooth. Thus, Allowing more gain in area's with EMI or areas one may have issues with noise.
One of the other mod is shorting out a capacitor, This eliminates a third filter. Reg explained what I needed to do, followed his instructions and completed the mod. With this particular mod, Greatly adds depth and now the faint one way signals are a two way signal. Earlier, I was generous and mentioned it added an inch in depth. But it actually adds more under right conditions, was amazed seeing the extra depth.
Later, Added a switch so I can use the mod with either on or off position. Didn't have too, But I like knowing can always switch back to stock performance with the flip of a toggle switch or to boost mode when ground conditions allow. Without the switch, the user will need to reduce gain if they want too hunt in areas to reduce noise. This added switch with the lead's hasn't shown an issue, and it may but so far I'm not seeing any problems.
Shorting this particular capacitor was one of the mods Reg and his friend Paul were doing, Reg has this information out there on the Internet if you want to Google it.
Also, Recently purchased one of Reid man's battery's. Wow, well made and it auctally added some depth. However, The mod I'm sharing above greatly increases depth and strengthens those weak signals. From both air testing and from my test bed, anywhere from 1 to 2 inches depending on the size coil.
With Reg's permission, here are a couple of pictures with the shorted capacitor mod eliminating the third filter. I've added a switch with the leads soldered to the cap, Secured with heat sink tubing to secure the soldered wires with the capacitor so it doesn't wiggle loose out in the field.
I know Reg has mentioned this before, and I agree please don't do these mods unless you are comfortable with these things.
Thanks to Reg, the old TDI can be a TDI Pro.
All the best,
Paul
↧
Recent Discovery (5 replies)
Recent discovery of the conductivity switch on my White's TDI SL.
The video shows what I've found.
It also works the same with the 7 1/2" dual field coil.
Just the opposite happens if you run the machine with the conductivity switch to high, low conductors are also heard.
More information to follow......
https://www.youtube.com/watch?v=D6KEe3liOtY
The video shows what I've found.
It also works the same with the 7 1/2" dual field coil.
Just the opposite happens if you run the machine with the conductivity switch to high, low conductors are also heard.
More information to follow......
https://www.youtube.com/watch?v=D6KEe3liOtY
↧
Quick TDI relic hunt (12 replies)
We have a old 1850 settlement near my area, farmer allows a friend and I access to search here anytime. About all that's left is old lead, tons of iron and once in a while an old button or old coin surfaces.
My main relic detector here is the GPX, yesterday tried the TDI which is my first time using a TDI for relic hunting. Up until yesterday, I've only used a TDI for park or gold jewelry hunting.
Wow! Wasn't expecting much difference between TDI park and relic hunting, thought I would gracefully adapt and pull finds up by the handful conductive finds that is. In stead, iron surfaced with ease sounding like good conductive signals.
Was tempted to switch to the GPX, I know it's capabilities what it can and can not do. But, Struck with the TDI managed to get a few pieces of old lead after switching to a smaller coil. Until I get used to using the TDI as a relic matching, will use smaller coils before moving up to the larger ones.
Was different, dug a higher ratio of iron with the TDI. Maybe it was me, not really accustomed to the TDI as a relic detector but put me and the TDI in an old park we always manage to get an old coin or two.
Hand's down the TDI in a park is clearly better than the GPX, but relic hunting think that's were the GPX has an edge and that's due to discrimination. Over all, I'm not giving up with the TDI going to master it in relic hunting.
Before I forget, With recent post with the SL using the Pro handle. I've never tried an SL with an S-handle, so temporary mounted my TDI on a Mars shaft to see how it swings. My GPX is mounted on one and it auctally swings well, fold's down for storage or hiking in long distances. I've found this shaft is great for these purposes, can fit inside a backpack as well.
Until the next TDI relic hunt, these are my first TDI relic finds. Iron is ok, especially from old settlements but it's nice to sometimes pass iron up to increase ones odds for a button or old coin.
Paul
My main relic detector here is the GPX, yesterday tried the TDI which is my first time using a TDI for relic hunting. Up until yesterday, I've only used a TDI for park or gold jewelry hunting.
Wow! Wasn't expecting much difference between TDI park and relic hunting, thought I would gracefully adapt and pull finds up by the handful conductive finds that is. In stead, iron surfaced with ease sounding like good conductive signals.
Was tempted to switch to the GPX, I know it's capabilities what it can and can not do. But, Struck with the TDI managed to get a few pieces of old lead after switching to a smaller coil. Until I get used to using the TDI as a relic matching, will use smaller coils before moving up to the larger ones.
Was different, dug a higher ratio of iron with the TDI. Maybe it was me, not really accustomed to the TDI as a relic detector but put me and the TDI in an old park we always manage to get an old coin or two.
Hand's down the TDI in a park is clearly better than the GPX, but relic hunting think that's were the GPX has an edge and that's due to discrimination. Over all, I'm not giving up with the TDI going to master it in relic hunting.
Before I forget, With recent post with the SL using the Pro handle. I've never tried an SL with an S-handle, so temporary mounted my TDI on a Mars shaft to see how it swings. My GPX is mounted on one and it auctally swings well, fold's down for storage or hiking in long distances. I've found this shaft is great for these purposes, can fit inside a backpack as well.
Until the next TDI relic hunt, these are my first TDI relic finds. Iron is ok, especially from old settlements but it's nice to sometimes pass iron up to increase ones odds for a button or old coin.
Paul
↧