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Coil sharing?
- Thread starter mncricket
- Start date
I missed something....do the new bounty hunter pros have screw on coil connectors? Hightone, how do you like your quickdraw pro? Was looking at a digitek for my child but can get the quickdraw much cheaper I think....I still need to get past the old bounty hunter stigma I guess....I have heard they are pretty good now.
The Teknetics Digitek has a 7" coil, QDP a 10" coil. The lower rod on the Tek is shorter and made for a smaller body frame, but a longer rod is available. The face of the Digitek has youth appeal. I don't know if the Digitek has plug in coils, screw in coils or non interchangeable. The LRP and QDP has "plug in" coils.
The new BH Pro line is separate from older BHs. They utilize the in house process used in the Euroteks, Teknetics Greeks, Fisher F5, and the new F11-44.
Bounty Hunter doesn't fall under the same sales MAP (minimum advertised price) as other detectors, which is why dealers don't handle them. So forget about service after the fact from a knowledgeable dealer.With BH, you simply deal with department store types. I've seen the QDP advertised for $175. I cannot see other differences between the Tek and the QDP.
As far as performance, it air tests a quarter to a true 9". It is as fast in recovery as any Tek. It is light and simple to use. It will find any target as fast as any detector to about the 7" level, some targets slightly deeper.
The new BH Pro line is separate from older BHs. They utilize the in house process used in the Euroteks, Teknetics Greeks, Fisher F5, and the new F11-44.
Bounty Hunter doesn't fall under the same sales MAP (minimum advertised price) as other detectors, which is why dealers don't handle them. So forget about service after the fact from a knowledgeable dealer.With BH, you simply deal with department store types. I've seen the QDP advertised for $175. I cannot see other differences between the Tek and the QDP.
As far as performance, it air tests a quarter to a true 9". It is as fast in recovery as any Tek. It is light and simple to use. It will find any target as fast as any detector to about the 7" level, some targets slightly deeper.
o1gden said:Hightone, maybe You can help me:
I want to buy NEL Tornado searchcoil (version for Bounty Hunter Gold, Platinum & Teknetics Eurotek, push-in connector), but it's working frequency is 7.81 kHz, while LRP operating on 7.69 kHz. Is it ok?
Don't worry about the frequency thing, that's stone age urban mythology.
I'm not vouching for the aftermarket coil (we didn't make it) but just trying to dispel the frequency myth. The "Greek/Fratbros" series DD searchcoils are what's used on the 19 kHz GB/G2/F19 machines, and we're also using them at 3 kHz on some engineering lab projects..
Sure. The early Fisher F5 and Tek Alphas and Deltas were plugin coils. The 5" suggested for those is the same one suggested for the BH Pros (that plug in). A few guys on here have bought the BH 4" coils made for the older 6.6 khz machines, but each said they couldn't get but 2-3" of depth.
If what Dave says is true, I wonder why a 4" won't work like they do on the older BHs. Or the 10.25 Magnum.
If what Dave says is true, I wonder why a 4" won't work like they do on the older BHs. Or the 10.25 Magnum.
The electronic circuit in the "box" is designed to expect a searchcoil having certain values of inductance and resistance and capacitance. With a certain type of connector wired in a certain way. Give it something different and it won't like it. Fortunately the wrong searchcoil usually won't fry a circuit.
Prior to the 1980's, many metal detector searchcoils were tuned with resonating capacitors in the searchcoil for both transmitter and receiver. These were designed to run at a particular frequency and the frequency of the transmit coil had to match that of the receiver coil to a high degree of precision, otherwise it threw the ground balance off. Two searchcoils tuned to the same frequency but from different manufacturers weren't necessarily interchangeable because of different inductance and capacitance values. In other words, back in the dark ages there was some basis for the urban mythology about frequency -- not much, but some.
Circuits got better. I don't think anyone uses resonated receivers nowadays, other than in a very few oldie but goodie legacy platforms. Tuned transmitters are still the norm in single-frequency machines, but in most models the tuning capacitor is on the PC board and the searchcoil itself can run over a fairly wide frequency range. Multiple frequency machines have been a staple commodity since 1991 proving that it's possible to operate a searchcoil over a wide frequency range if that's what it's designed to do.
Prior to the 1980's, many metal detector searchcoils were tuned with resonating capacitors in the searchcoil for both transmitter and receiver. These were designed to run at a particular frequency and the frequency of the transmit coil had to match that of the receiver coil to a high degree of precision, otherwise it threw the ground balance off. Two searchcoils tuned to the same frequency but from different manufacturers weren't necessarily interchangeable because of different inductance and capacitance values. In other words, back in the dark ages there was some basis for the urban mythology about frequency -- not much, but some.
Circuits got better. I don't think anyone uses resonated receivers nowadays, other than in a very few oldie but goodie legacy platforms. Tuned transmitters are still the norm in single-frequency machines, but in most models the tuning capacitor is on the PC board and the searchcoil itself can run over a fairly wide frequency range. Multiple frequency machines have been a staple commodity since 1991 proving that it's possible to operate a searchcoil over a wide frequency range if that's what it's designed to do.
Dave J., Hightone, thanks a lot! But now, I'm confused about NEL Tornado 12x13 coil: I reading many russian forums, some people says it's a very good coil and it's more effective than default coil for about a 30% , others says the coil is not so good and real effectiveness is about 5% maybe 10% max.
I had a NEL tornado for a non-FT detector. I would suggest not getting taken in by the major depth increase hype.
I would say the 5-10% depth increase estimate would be about right for the one I had compared to the smaller stock coil. The downside was typical for a larger search coil - more subject to masking and poorer ergonomics.
I would say the 5-10% depth increase estimate would be about right for the one I had compared to the smaller stock coil. The downside was typical for a larger search coil - more subject to masking and poorer ergonomics.
I think people believe that after market coils have some sort of magic over the stock coils. If you believe it enough, you will see it. I can understand buying a Nel Sharp 5" over the FTP 5" because of the price difference. But I believe the if you have a FTP 11" DD, and you buy a 12.5" NEL Hunter, you're not going to see much difference in depth. And EMI? FTP fixed some EMI problems recently with the F75 upgrade. Had nothing to do with changing coils.
I see plenty of detectors for sale with the large Tornado type coils. I believe most are sold out of frustration that the seller expected more. There's always manufacturers that jump into a thriving sales industry that say that their product improves the original. And some do. Kenwood and Polk will make better tunes in your car over the stock radio. But I'm not interested in every person within a mile hearing what I'm listening to in my car.
I see plenty of detectors for sale with the large Tornado type coils. I believe most are sold out of frustration that the seller expected more. There's always manufacturers that jump into a thriving sales industry that say that their product improves the original. And some do. Kenwood and Polk will make better tunes in your car over the stock radio. But I'm not interested in every person within a mile hearing what I'm listening to in my car.