F75 LTD best coil available for gold detecting ????

[Astro Nut]

What is the best coil available for the F75 LTD gold detecting? It comes with a 11" & 5" DD coils. I plan on doing a lot of gold prospecting old creek beds and stream beds after the snow melts and they dry up this spring and summer. I do not mind buying other than fisher coils. I want the best coil for this type of detecting. I will do other than gold too. There will be lots of parks lakes wooded areas as well. I live in the Sierra foothills of Northern California with plenty of areas to hunt. All feedback on best coils is greatly
appreciated. Thanks
--------------
Bill

 

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[dirtscratcher]

I think Fisher makes a 5 by 10, if not I'd try a nel sharpshooter.

 

[Terry Soloman]

[SIZE=+1][/SIZE]The F75 is not really a nuggetshooter at 13-kHz. You might want to look into a Fisher Goldbug Pro (19-kHz)
[SIZE=+1]
F75 Specifications[/SIZE]
​

• Mechanical: S-rod with electronics housing mounted on handgrip, 3-piece breakdown, batteries under elbow, 2-way armrest adjustment —
  forward/backward & around forearm.
• Searchcoil: 11” (28 cm) open-frame elliptical double-D, waterproof.
• Batteries: 4 AA, alkaline (not included).
• Weight: 3.5 pounds (1.6 kg) with alkaline batteries installed.
• Static Balance: force in vertical plane normal to elbow 0.47 pounds (0.22 kg).Varies with adjustment and user’s stance and arm/hand physiology.
• Dynamic Balance: axial moment, 0.29 foot-pounds (0.39 newton-meters). Varies with adjustment and user’s stance and arm/hand physiology.
• Sweep Effort: lateral moment 5.2 foot-pounds (7.1 newton-meters).
• Operating Principle: VLF induction balance
• Operating Frequency: nominal 13 kHz, quartz crystal timing reference
• Basic Sensitivity: 6 x 10 9 root Hertz (detectivity)
• Lag Coefficient: 78 milliseconds
• Reactive Overload: approximately 10,000 micro-cgs units (volume susceptibility)
  40,000 micro-cgs units with sensitivity < 30.
  Resistive Overload: approximately 1,200 micro-cgs units (volume susceptibility)
  4,800 micro-cgs units with sensitivity < 30.
• Ground Balancing Range: From ferrite to salt, inclusive
• Discrimination Ground Suppression: combination of second and third order methods
• ID Ground Suppression: third order
• Battery Life: Typically 40 hours with high quality alkaline batteries
  Estimated 80 hours with nickel oxyhydroxide batteries
  Estimated 65 hours with lithium iron disulfide batteries
• Operating Temp Range: 4 to +122 degrees F (-20 to +50 degrees C)
• Operating Humidity Range: 0-90% non-condensing

 

[dirtscratcher]

[SIZE=+1][/SIZE]The F75 is not really a nuggetshooter at 13-kHz. You might want to look into a Fisher Goldbug Pro (19-kHz)
[SIZE=+1]
F75 Specifications[/SIZE]
​

• Mechanical: S-rod with electronics housing mounted on handgrip, 3-piece breakdown, batteries under elbow, 2-way armrest adjustment —
  forward/backward & around forearm.
• Searchcoil: 11” (28 cm) open-frame elliptical double-D, waterproof.
• Batteries: 4 AA, alkaline (not included).
• Weight: 3.5 pounds (1.6 kg) with alkaline batteries installed.
• Static Balance: force in vertical plane normal to elbow 0.47 pounds (0.22 kg).Varies with adjustment and user’s stance and arm/hand physiology.
• Dynamic Balance: axial moment, 0.29 foot-pounds (0.39 newton-meters). Varies with adjustment and user’s stance and arm/hand physiology.
• Sweep Effort: lateral moment 5.2 foot-pounds (7.1 newton-meters).
• Operating Principle: VLF induction balance
• Operating Frequency: nominal 13 kHz, quartz crystal timing reference
• Basic Sensitivity: 6 x 10 9 root Hertz (detectivity)
• Lag Coefficient: 78 milliseconds
• Reactive Overload: approximately 10,000 micro-cgs units (volume susceptibility)
  40,000 micro-cgs units with sensitivity < 30.
  Resistive Overload: approximately 1,200 micro-cgs units (volume susceptibility)
  4,800 micro-cgs units with sensitivity < 30.
• Ground Balancing Range: From ferrite to salt, inclusive
• Discrimination Ground Suppression: combination of second and third order methods
• ID Ground Suppression: third order
• Battery Life: Typically 40 hours with high quality alkaline batteries
  Estimated 80 hours with nickel oxyhydroxide batteries
  Estimated 65 hours with lithium iron disulfide batteries
• Operating Temp Range: 4 to +122 degrees F (-20 to +50 degrees C)
• Operating Humidity Range: 0-90% non-condensing

Don't tell that Steve guy. Lol . I believe he's found quite a bit with his . Technically your right but under certain circumstances it does alright.

 

[DannyB1954]

Don't tell that Steve guy. Lol . I believe he's found quite a bit with his . Technically your right but under certain circumstances it does alright.

Steve could find gold using two sticks as a divining rod.
If the gold is large enough you can pick it up with any detector. All depends on what kind of gold is in your area. If there is mostly small stuff, the higher frequencies have shown to be better. You can walk over a deep large nugget with a high freq machine just as easy as walk over a shallow small nugget with a low freq machine. The Tesoro Compadre at 12kHz can find nuggets. Most machines designed for gold are around 17.8Hz or higher. So if there was only one perfect frequency for gold, there would be only one frequency gold machine made. If your machine can pick up the end of a bic pen,(one of Steve's tricks), it can find small gold.

To get back to the question, I would agree that the 5 x 10 works well with most medium frequency machines. It strikes a good balance between area covered, small nugget pick up and pretty good depth. If you look at the Minelab X-Terra 705 gold, Fischer f-19, Tesoro Lobo, Whites GMT, and others, that is what they come with.
http://www.detectorprospector.com/g...steves-guide-metal-detecting-gold-nuggets.htm

 

[Astro Nut]

Thanks for the responses
-----------
Bill