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who runs single frequency?
- Thread starter bklein
- Start date
Jason in Enid
Active member
bklein said:
cant see it without joining
Understand. The photos show that the TX signal is always a combination of frequencies but single frequency may have more power in the chosen frequency. I figure most here are like you and don't really care so I think I'll leave them on Geotech unless people really want to see them here.
Now for some weirdness...
I went to my local park and tried Multi-freq vs single frequencies and got a lot of weird behavior. I first got a lot of "1" target ID's. Way too many. Initially if I went to pinpoint ID confirm them - but in the video I took I instead went to the various single frequencies to show there were no targets there. The 5KHz frequency setting had an increase in EMI noise. Sensitivity was at 25. I went back to Multi and the 1's came back again. I went to Pinpoint and nothing confirmed the 1 targets. I walked to an area I knew had targets and pinpoint sounded off but had no target ID's showing. Is this all normal???
(Dropping the Sensitivity (to 20) didn't drastically change anything - in depth or target ID's.)
[video]https://www.youtube.com/watch?v=Nrtkrr9iVIE[/video]
Now for some weirdness...
I went to my local park and tried Multi-freq vs single frequencies and got a lot of weird behavior. I first got a lot of "1" target ID's. Way too many. Initially if I went to pinpoint ID confirm them - but in the video I took I instead went to the various single frequencies to show there were no targets there. The 5KHz frequency setting had an increase in EMI noise. Sensitivity was at 25. I went back to Multi and the 1's came back again. I went to Pinpoint and nothing confirmed the 1 targets. I walked to an area I knew had targets and pinpoint sounded off but had no target ID's showing. Is this all normal???
(Dropping the Sensitivity (to 20) didn't drastically change anything - in depth or target ID's.)
[video]https://www.youtube.com/watch?v=Nrtkrr9iVIE[/video]
Took it back to the park again today. Tried ground balance all 3 ways and still get "1" targets in Multi-freq and nothing in the other frequencies (except for hard good targets). Pinpoint is different in Multi vs single frequency and even different in the end attempt vs the beginning attempt (14 ID vs a zero). When the coil gets over a coin it is a dominating sound but all the bogus 1 targets... what is that? Perhaps chewed up can bits but they should hit just as strong in pinpoint and perhaps other frequencies. I still get the 1's in multi-freq if I turn the sensitivity down. [video]https://youtu.be/QUXjhOQHT_4[/video]
Oh mine will find the coins too - it is just that in Multi-freq there are all these "1" ID targets that don't show up in single frequency (Park2 tests NOT Beach or at the beach).
My question started out asking if perhaps single frequency would eliminate some of the foil and bits of trash that I'm getting in Multi at the beach.
As I don't get the "1" targets at the park with single frequency I'm thinking at the beach might work. I know the standard arguement is that single frequency won't work in salt water but I haven't tried it yet and I wonder if with DSP and the particular TX signals the detector uses if it would work. With Beach mode you are forced to Multi-mode though so it remains to be seen if the salt is an issue in Park mode. I'll try it this weekend.
I do suspect though my detector has an issue. Just have to get along side another one and compare at same settings. I know mine got in a weird mode earlier where depth was reduced 2-3" across everything until I did a hard reset.
My question started out asking if perhaps single frequency would eliminate some of the foil and bits of trash that I'm getting in Multi at the beach.
As I don't get the "1" targets at the park with single frequency I'm thinking at the beach might work. I know the standard arguement is that single frequency won't work in salt water but I haven't tried it yet and I wonder if with DSP and the particular TX signals the detector uses if it would work. With Beach mode you are forced to Multi-mode though so it remains to be seen if the salt is an issue in Park mode. I'll try it this weekend.
I do suspect though my detector has an issue. Just have to get along side another one and compare at same settings. I know mine got in a weird mode earlier where depth was reduced 2-3" across everything until I did a hard reset.
Tried Park1 and 2 at the beach. So now it gets the "1" ID's there. Multi and Beach2 much better. Beach 1 more chatty.
40Khz could work I suppose if you were to reject 1 ID's. I suppose I could do that for Multi at my park too.
Today I ran the EQ800 at Laguna and the CTX at Aliso. I liked the audio better with the CTX but there were not as many targets.
The EQ800 seemed to be working correctly - depth seemed ok, there just were not many targets. Getting kinda worried about summer hunting.
40Khz could work I suppose if you were to reject 1 ID's. I suppose I could do that for Multi at my park too.
Today I ran the EQ800 at Laguna and the CTX at Aliso. I liked the audio better with the CTX but there were not as many targets.
The EQ800 seemed to be working correctly - depth seemed ok, there just were not many targets. Getting kinda worried about summer hunting.
Most of the time I use multiple frequency but sometimes I use 5 frequency. I noticed that just on the 5 frequency of go over a steel bottle cap it well give a high tone and no. Of 34. Put it on multiple frequency and it doesn't do that. This doesn't bother me just difference.
Klein,I really hate to tell you this but all those '1' signals are diamonds! Your experimenting with a signal tester, O-scopes and various inputs have made your machine into a 'diamond tester'. Are you getting a tone with the '1'? When mine hits on a '1', it plays "here comes the bride!" Just kidding!
I am about to walk out on the beach and try that single freq stuff on a few clad coins buried about 6" down. I tried all those 'single freq checks' to eliminate bottle caps, etc., but either I cant figure it out or it doesnt work for me in a consistent enough manner. IMHO the 800 hits a lot of the tiny edges of a bottle cap and gives a 'rattly' tone, just like over a twisted piece of can slaw, lots of very fast tones on a slow sweep.
I am about to walk out on the beach and try that single freq stuff on a few clad coins buried about 6" down. I tried all those 'single freq checks' to eliminate bottle caps, etc., but either I cant figure it out or it doesnt work for me in a consistent enough manner. IMHO the 800 hits a lot of the tiny edges of a bottle cap and gives a 'rattly' tone, just like over a twisted piece of can slaw, lots of very fast tones on a slow sweep.
My best diamond detector has been my dog (during walks). She found a hundred dollar bill at a school too.
On the EQ a bottle cap will often give me two fast tones but a cell phone would give me two or three as well on the ctx so I still dig everything - except I am hesitating to dig 20-22’s (usually pennies). Just a world of difference between IDs on the EQ vs CTX. Conditions so bad I think somethings wrong with each of them. Ten guys a day hitting the same dry sand getting $2-8 a day. Tried my gp extreme out in my backyard in anticipation of maybe trying it in dry sand. So much more complicated and I think more sensitive to emi. I’ll probably sell it.
On the EQ a bottle cap will often give me two fast tones but a cell phone would give me two or three as well on the ctx so I still dig everything - except I am hesitating to dig 20-22’s (usually pennies). Just a world of difference between IDs on the EQ vs CTX. Conditions so bad I think somethings wrong with each of them. Ten guys a day hitting the same dry sand getting $2-8 a day. Tried my gp extreme out in my backyard in anticipation of maybe trying it in dry sand. So much more complicated and I think more sensitive to emi. I’ll probably sell it.
If no single frequency on the Nox is deeper than multi on the Nox, that is not evidence that multi on the Nox is deeper in all circumstances than single frequency on ANY other detector.
Nice machine, very versatile, good price - but not the best machine for every user in every circumstance.
Nice machine, very versatile, good price - but not the best machine for every user in every circumstance.
lytle78 said:
My first view of the EQ600, running stock/multi frequency, MADE me think a lot after just one signal comparison between my Etrac and my one buddie's, brand new EQ600.
His 600 spanked that deep silver dime nicely at 8-9 inches. I had "to work a little with my Etrac" to even find that tone. It was a 12-conductive ID though on the Etrac.
The EQ in multi frequency, WITH discrimination mind you...surely made me and my trustworthy Etrac,,,honest. I always run my Minelab wide open in disc,. Not the same with the new EQ600 I have been using after purchase.
This sucker does fine with a lot of discrimination, and with depth.