to determine the ultimate sweep speed for me and for the sites I hunt.
The
ITF Method is simply using any detector and coil combination
In The Field where I will be dealing with:
• different ground mineral conditions
• site environment, such as an open, unrestricted area compared with a location that has dense brush, rocks, building rubble, etc.
• a sparse-target condition or one that is moderately littered to a very dense trash environment
• encountering smaller-size debris or large pieces of trash, and also know if it is mainly ferrous or non-ferrous discards
• and taking into consideration the type of detector circuitry and the settings used
• and also know the strengths and limitations of the search coil type [size=small]
(Double-D or Concentric)[/size] and size [size=small]
(smaller, mid-sized or standard to oversized)[/size]
• and we can't forget to consider the size, conductivity, and probable depth of the desired targets we are searching for.
I also like to understand the strengths and limitations of the performance of the detector/coil combination I am using, and in the case of the Makro Racer series and Nokta FORS series and Impact models, they all have the ability to be swept at a somewhat quicker sweep speed than most of the typical double-derivative, slow-motion detectors that have been around. I'll use my personal detector arsenal as a reference, and my Makro and Nokta units
can be swept somewhat faster than any of my Tesoro models in most environments, especially if the ground mineral conditions are challenging and the MMI reading is high.
So, as indicated in the cut-and-paste you made from the User Manual, ... YES ... your Racer 2
CAN be used with a somewhat faster sweep speed. The question is, what do all of us consider fast or slow to be? From
MY own
ITF experiences, in the more mineralized ground I generally hunt in, and with the abundant trashy conditions with an over-supply of iron debris, using any of these models with one of their smaller-size search coils I know my sweep speed capabilities as well as limitations. When conditions are favorable, I might use a
little faster sweep.
However, I also determined early on, when using the Nokta FORS CoRe and soon after the original Makro Racer, that these detectors also have the strength of providing me excellent target response, impressive depth of detection, and commendable rejected target recovery to be very functional when I use a reasonably slower sweep speed and methodical search of a site. This is especially true when I have the smaller-size search coils mounted. They let me go slow enough to perform quite well and let me methodically overlap for efficient coverage and even 'scribble' the search coil in and about a small area while I briefly pause when working a site.
Mainly refer to the last sentence they used:
"If your swinging speed is not correct, the device may not detect the target accurately and the target ID numbers may bounce."
That's the reference I relate to, and once I have determined the sweep speed required as well as the slowest sweep rate that I feel still provides me with a 'functional' audio and visual Target ID, them I know the operating range for that detector and settings, with that coil, and in those environments, and I am satisfied. I've done
MY part, and if I do
MY part well, I have found these detectors to do
THEIR part just as efficiently.
Monte
However, I have noticed in the high trash areas, two tones is downright irritating due to all the pops and clicks as you described them. It's fatiguing to listen to. Reducing gain to about 50ish helps. I'm starting to appreciate 3 tones much more lately--I don't think the depth loss, if any, matters as much as the improved stability and separation I experience in 3 tones. I can run 3 tones with significantly higher gain. Next I want to try some tweaks to the tone breaks and audio tones. 
