3khz or 7.5 for Coins?
Welcome guest, is this your first visit?
Results 1 to 2 of 2
Like Tree1Likes
  • 1 Post By DaveVanP

Thread: 3khz or 7.5 for Coins?

« Prev Thread | Next Thread »
  1. #1

    Oct 2018
    Coffeyville, KS
    Minelab XTerra 705 Fisher F44
    70 times

    3khz or 7.5 for Coins?

    I am considering getting an additional coil for my XT705 Gold. It currently has the 5x10 18.75 khz coil. I seem to understand that lower frequencies are best for high conductors (silver/copper), and less sensitive to ferrous. I have a Fisher machine that operates at 7.8, so I was thinking getting a 3 khz coil for the 705 would cover all my bases...

    Any experience out there using the 705 at this freq? Recommendations?
    "A pipe gives a wise man time to think, and a fool something to put in his mouth." - e. e. cummings

  2. #2
    Charter Member
    Oct 2014
    Garrett: AT Pro, AT Gold & Infinium; Minelab: Explorer SE, II & X-terra 705; Tesoro: Tejon & Outlaw; White's: V3i & DFX
    29002 times
    Relic Hunting
    Banner Finds (2)
    The 3K Hz coil is fairly deep and hits hard on higher conductors. I like the 18K Hz for jewelry in parks and play areas.



Sponsored Links

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts

Similar Threads

  1. 3khz 9" coil on the Xterra
    By NeilinFR in forum Minelab
    Replies: 7
    Last Post: Sep 08, 2016, 04:47 PM
  2. AT Pro 15 KHz V. X-70 3KHz
    By johnnycat in forum Garrett
    Replies: 1
    Last Post: Jan 29, 2011, 10:54 PM
  3. WTT Xterra 3kHz Coil for HF DD or Headphones
    By Idaho PRB in forum Treasure Related Stuff For Trade
    Replies: 1
    Last Post: Nov 14, 2010, 11:49 PM
  4. 9" 3KHz coil
    By johnnycat in forum Minelab
    Replies: 4
    Last Post: Aug 25, 2008, 09:40 AM
  5. 3Khz vs. 15KHz. When do you use which? (DFX users)
    By mikeofaustin in forum Metal Detecting
    Replies: 3
    Last Post: Apr 16, 2008, 06:56 AM
Powered by vBadvanced CMPS v4.3.0