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RX GAIN question
Posted by: Tony N (Michigan)
Date: November 29, 2017 01:55PM
This is on Whites message board:

Rx Gain Sensitivity: This sensitivity control will influence both all-metal/pinpoint modes and the discrimination modes for the instrument. The setting for the Rx is determined by how much trash/iron is in the ground and how strong the ground mineralization. The Rx gain being set too high can create problems with nails by making them chirp and sound off like a good target. Reducing the gain some in this type of site seems to help. Also, when the ground is really wet it seems to make the nails and iron targets sound off and chirp. The Rx gain and type of loop will react to the ground differently; this will also be true of bottle caps/iron.

How does one know right where to put the Rx Gain?

Say I'm detecting in a yard riddled with iron square cut nails. Do I put the Rx Gain between 1 and 5 and up the Sensitivity? How does one know what settings to make?

It's nice to know we need to adjust Rx Gain and Sensitivity to our environment but just saying that, at least to me, doesn't help.

Does anyone know what exactly I am looking for to adjust my Rx Gain? I am the kind of guy that likes to run my V3i hot. But maybe if I adjust it down, my finds will increase.



Edited 1 time(s). Last edit at 11/29/2017 01:56PM by Tony N (Michigan).

Re: RX GAIN question
Posted by: squirrel1
Date: November 30, 2017 10:58PM
You'll likely ne'er see a need to run over level 12 setting.

More like 9.

Bury a coin and play with your settings,

Not much additional depth achieved by going hot.
Usually will do more damage by doing.

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Re: RX GAIN question
Posted by: Tony N (Michigan)
Date: December 01, 2017 01:15PM
Quote
squirrel1
You'll likely ne'er see a need to run over level 12 setting.

More like 9.

Bury a coin and play with your settings,

Not much additional depth achieved by going hot.
Usually will do more damage by doing.

Since I have so many square cut iron nails in my yard, probably the best thing for me to so is to put a coin in between two nails and about 5 inches below them
and see which settings are best to be able to hit the coin.

So my plan is like this:
Find two nails in the yard that are about 6 inches apart.
Dig a hole off to the side of them.
Tape a quarter onto a paint stick.
Ram the paint stick below and between the two nails.
Adjust detector to see if I can hit the coin.

Re: RX GAIN question
Posted by: MackDog
Date: December 01, 2017 11:20PM
In Spokane the best or should I say the highest I can run the RX Gain is 7 due to heavy mineralization. I use the Detect 12x15 coil and routinely get silver dimes to 8-9" IHP' to 9"

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Re: RX GAIN question
Posted by: Tony N (Michigan)
Date: December 04, 2017 01:11PM
Quote
MackDog
In Spokane the best or should I say the highest I can run the RX Gain is 7 due to heavy mineralization. I use the Detect 12x15 coil and routinely get silver dimes to 8-9" IHP' to 9"

I wonder if your 15x12 coil is as deep as my 13" Ultimate?

8-9 inches in heavily mineralized soil is doing really well.

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