FE/CO readout but no sound?

[PowerDetecting]

I noticed that while detecting I will see some numbers on the screen but I am getting no audio. It seems that 90% of the time they are DEEP targets 9 and 10". Is this iron or is it too deeps to get an audio or what? I have not dug any of these yet because I dont know if it is iron or if it is tiny trash? can someone explain? Thanks

 

[WildOutdoorAddict]

Are you using headphones? I assume the ctx is proportional audio......so the deeper the target the fainter the sound. I haven't had mine long so I haven't had my coil over a deep coin 9-10 inches.

 

[neslot]

You might want to check your threshold level, page 24 in my manual..

"If the Threshold Level is too high, faint
targets will be harder to hear above the
Threshold

 

[Larry (IL)]

Depends....... what are Fe-Co numbers and what does the screen indicate?

 

[GateKeeper]

Also if your Gain is too low, you will not hear those deep signals.

 

[PowerDetecting]

I am not using headphones I do but most of the time I do not. My settings are...volume gain 25, threshold 30, volume limit 30 and threshold pitch 17. The signals I had was a 12/44 and I could not get a PP on it either I just figured deep iron and moved on but it had me thinking the whole hunt what was that I ran my coil over... I will try and change up some settings when this happens again to see if I can get it to chirp... I know it hits 10" coins with audio though because I have dug my fair share already. Thanks for the reply's

 

[Larry (IL)]

The no pinpoint is a dead give away it is not a good target. You might have had a red triangle in the lower right corner as well as the 12-44 indicating iron, my guess is you were over some rust.

 

[PowerDetecting]

I duno it didnt scatter like rust, it was a tight pattern. Even in open disc it was consistent just no audio and there was no null. I should have put it on video. If I run back over one of those again I will be sure and dig it just to check it.

 

[Nes (south Coast-CA)]

At the beach, I run in reverse discrimination most times to catch those signals that aren't sounding off in the discrimination mode. When a low sound is heard, I switch over to discrimination to see if the machine gets a reading. If it doesn't, I dig. That system has gotten me rings many times that I wouldn't have heard just detecting in discrimination. I first started doing that with an Excalibur 800 that I bought used sometime in the early 90's. I mentioned it on this Forum back then and some people had never thought about detecting that way. I don't know how that would work in dirt, because of all of the deep junk... Nes

 

[Digger]

I used the reverse discrimination back in the 70's, when the first VLF/TR machines were introduced. The TR mode was discrimination and the VLF (at that time) did not discriminate. VLF would hunt much deeper than TR. I'd hunt in VLF, and when I got a signal, I'd switch over to TR. Whether it was good or bad, it was too deep for the TR mode to detect and/or identify. Tuning the coil to the ground, if the TR signal did not tell me it was trash, I'd dig. Similar to your experience with rings, I dug a ton of coins using this method. With the advent of discriminating VLF, there may not be as good of a reason to hunt this way. However, since we now have tones to help identify ferrous or conductive properties, I still like to hunt with minimal discrimination and verify with another Pattern having more discrimination. But in my opinion, unless a detector has a true all metal mode, I see no difference in depth when comparing an open mode with an ample amount of rejection. Just less audio to decipher, in the latter case. JMHO HH Randy

 

[Digger]

I agree with Larry (IL)....if Pinpoint don't see a target, there probably isn't one. My recommendation would be to slow down your sweep speed. Just as too quick of sweep can create false audio signals, it can also provide false visual indications. JMHO HH Randy

 

[parkgt]

Threshold at 30 IMO is way too high. I doubt it is your problem here but running that high could be an issue in other situations. I have never run higher than 17 and am usually at 15 (poor hearing) with either headphones or earbuds which I prefer in anything but cold weather.

Try some decent headphones or earbuds and turn that threshold way down unless you are near deaf. You should just barely hear it "buzzing."

 

[PowerDetecting]

Threshold at 30 IMO is way too high.

I cant run it this high when I have my headphones on but without them I run it higher usually because of wind and cars, ect... I will try changing up some settings and see how it works Thanks for the advice. Digger Randy... I dont think I can slow down my sweep anymore lol but I think it was more then likely nothing or just junk anyhow. Thanks for the advice everyone HH

 

[Downdeep]

I always have target indicators on the screen when using fe/co, both accepted and rejected. I think this depends on the ground conditions. The few times I have seen my screen clear is in exceedingly clean ground. Check your sound settings as mentioned but otherwise just listen for sounds to alert you that a target exists and then see what the screen is telling you. I thought the same as you at first, thinking I was missing something and have since learned that I am not.

 

[Digger]

You make a good point about the Ferrous-Coin Separation mode......... Ferrous-Coin was designed to be used in areas with low levels of mineralization. And regardless of the amount of discrimination, you will detect both ferrous and non-ferrous targets. Therefore, if you are hunting in areas with moderate to high levels of mineralization, you might encounter times when concentrated areas of mineralization is recognized as ferrous targets. They will not typically lock on, and will appear as scattered images on the SmartScreen. Early on, I believe I referred to these as resembling a meteor shower. JMHO HH Randy

 

[Jacksonrs]

In The manual there is a side note on the ferrous cooin setting, stating that sometimes the cursor will be present with no audio.
i suggest switching to high trash.