It does. They are part of the multi-frequency spectrum used. Minelab has repeated stated that the 600 and 800 both use the exact same frequencies in multi-IQ settings.
"Neither the 600 nor the 800 transmits all five frequencies into the ground simultaneously in Multi IQ, it most likely transmits two or at most three of the five base frequencies and uses the properties of frequency multiplication and harmonics to roughly cover the spectrum from 5 to 40 khz that it monitors on the receive end."
All 5 frequencies are transmitted in every single mode, on both the 600 and the 800. I have both and have measured the field of each with a spectrum analyzer.
Minelab's "secret sauce" is obviously in how they analyze the return signal.
An oscilloscope measures voltage vs. time. Not the right instrument to measure what frequencies are being transmitted by a device. A spectrum analyzer displays what frequencies are present and is the correct instrument to use in this case. I used a coupling coil to pick up the field from the detector's coil, and fed it into a spectrum analyzer. If you would look at the more recent measurements on Geotech you would see earlier measurements were not good, but later ones corroborate what I found.
You can take Minelab's marketing jargon and use it any way you please. I actually measured the units, particularly because of the argument over whether the 600 output the same 5 freqs. as the 800 in multi - even though it does not allow you to use 20 or 40KHz independently. I have both, as I bought the 600 when I couldn't get the 800. I also observed that single frequencies are transmitted when they are selected. So I'm quite confident of my results.
I have a 600 as I was on a budget. Had I had the money I probably would have bought the 800. I would like to ask on this subject why so many folks seem to have a 600 and an 800. If you like either or and bought another of the same for a back up then I understand. But if you can afford an 800 what would be the purpose of owning a 600 as well.
600 here, no place for prospecting in upstate ny.