bklein

I’m curious if anyone has tried to add a gain circuit to the CTX rx coil.

Did you buy it from me? Synthartist

What’s your house number? Might catch you while walking my dog. Mine is 32041. I hope to try Laguna again Friday or Saturday….. Might go back to the 11” or AQ this time. Nobody is finding much it seems.

A spare, or the ONE?

I need an official OBN sticker.

Does he still make a coil adapter to use non-CTX coils? It would be cool to have that so we could use a lighter coil. Then battery on our belt, display on our shoulder?

I made a couple. Of all places I found the new shovel at the hardware store in Solvang. I liked it, did pretty well with it. Liked that I could scan it with my coil while out in the water. I ended up getting a huge Extreme scoop as I felt I needed to dig deeper. But I still have it and I may give it another try sometime as most targets seem to be recent drops.

One limit is if you are going to bring it on an airliner. But besides that I’m wondering if guys prefer something longer just to get more coverage per swing. I use the Minelab harness anyway - due to damage from the weight of the CTX. Now I use the Manticore and just tried the M15 coil for the first time. It is much lighter than the CTX’s 17”, gets small stuff, and should be a bit deeper. Wonder how a longer shaft would be - the harness helps carry the weight of the detector but doesn’t help with swing mass. Got to slow down by the swing ends or it’ll cause eventual arm tendon damage.

Just tried mine for the first time at Laguna. I like it as there is a lot of amplitude difference between good targets and questionable ones. I now skip any target with a ferrous nature to it. Some of these are loud but after digging a few I find they are a rusty 1/4” or bigger piece of iron. Got a couple cheap rings, around 8 coins, and another pocket knife for my collection. I use the harness. My arm is ok today so it must be better than the CTX and the 17”. Around 90 degrees - I brought water with me to keep hydrated. If you install the coil the other way you are supposed to walk backwards using it……

Advice on length to get?

I work at a company that makes communication systems for military aircraft. We apply a conformal coating on the boards that tolerate 100% humidity. Wonder why not used on our detector boards. There appears to be no consensus about silicone products on electronics. I could be wrong but I suspect the controls are not rated for water submersion. Maybe just put an o-ring under the knob would help?

Regarding the switches, I haven’t checked yet - what material are the nuts? I wouldn’t think stainless steel would corrode. After replacing them I don’t go underwater with mine, so I’m wondering if there’s a spray or gel recommended. Silicone may compromise contacts (AI response advises against it). A real bummer we can’t gain access to the insides.

I went with the AQ but didn’t find anything good. 3.5 hours. There appears to be a new longer style of Bobby-pin - got lots of those, plus the usual bottle caps and wires. A quarter, nickel, and a penny. Nice pocket knife on a visual find. i see now the nuts on the Mode and Delay switches are corroding badly.

Any chance you could post some photos of the inside view of this? I don’t get what is causing the intermittent. An unsoldered wire?

Sorry not a pot, the delay rotary switch: