I believe at least one person has checked Equinox transmit freqs comparing detect modes. Here’s link.
https://www.detectorprospector.com/...ise-park-1-is-single-frequency/#comment-91505
What was the date of that posted test.......
have a look at this post instead..
https://www.detectorprospector.com/forums/topic/8314-minelab-multi-frequency/page/6/