Can Two F-75 work near each other ?

[reconj]

Or do you have to do a Frequency shift on both--One high and the other one Low ? Thanks--Jack

 

[Charlie P. (NY)]

I would think so. There are seven frequencies to choose from (hold menu button down and kick the trigger forward to scroll through F1 to F7.

 

[Streak!]

that even if one isnt experiencing AUDIBLE interference, detecting close to another machine affects depth and performance. We tried this with a number of machines on deeper targets. Once ANY of the machines got to within a certain distance of any other given machine(regardless of freq), the deep target was lost every time. Havent tried this with the F75, but dont know why that would be any different. Also, the distance away we could detect from each other with no discernible loss of performance was measured in YARDS, not feet!!! Was kind of an eyeopener!!! Streak!

 

[Neugene]

Alton and I did a club hunt about a month or so ago both with F75s. After one of us frequency shifted we had no audible problems working within 15' or so of each other.

 

[Idaho-Marke]

The question must be... less than 15' did you experience any interference? Say it isn't so.

I'm going to a coin shoot in ten days and I expect lots of machines of all sorts nearby. 15' would be a luxury.

My MXT did OK except with other MXTs. Then I had to go in the other direction as they didn't agree with each other.

I bought the F75 in advance of the coin shoot and hope to use it there. It's a fun machine, but I'm having a bit of a problem with pinpointing as I used a 4x6 shooter coil on my MXT and it was easy to sort things out. Many targets under the F75 coil and I have a hard time finding one quickly using the F75 pinpoint location and I've resorted to pinpointing with the tip of the coil like a normal DD coil as I can pinpoint quicker here. I realize it's just a matter of practice, but...

Now that you've all had some time with your machines....

Any suggestions on how you work out multiple targets quickly? Did you discover a trick on pinpointing with the F75 you think would help? Please share your ideas.

Also if you have suggested settings for a fast coin shoot I'd love to hear those too. I'm thinking 2 tone, 6 disc, 30 sens, DE, and....? as everything will be right below the surface.

Your thoughts? Especially about the 15' spacing.

Thanks!

 

[Neugene]

Alton and I swept pretty close to each other while getting ready for the hunt. I had a couple of other people tell me that the F75 was driving their detector nuts but I did not notice a lot of interference.

DE should be fine as should be a sensitivity of 30. I ran discrimination at 15 if I remember correctly. I also used 3H sounds. This gives nickels a high tone. Unlike some at organized hunts, I don't mind digging them.

As far as pinpointing goes I have used two methods with good success. The first one is mentioned in the manual. Rough in the location of the target by sweeping, pull the trigger and pinpoint as close as possible and then move the coil slightly off center of the target and release and pull the trigger again.
The second method is the same as the first except I raise the coil slightly rather than moving it to the side.

After employing one of these methods,while still holding the trigger back, center the coil over the target so that you are getting the strongest highest pitch signal possible then move the coil forward (away from you) until the signal disappears. Then, slowly pull it back toward you. When the signal re-appears, the target is directly beneath the rod mount tabs on the coil.

The result is the same with both methods, but the second works better if you are trying to differentiate between two targets that are extremely close together.

Again, these are just my personal observations. If anyone has a better explanation or method of doing this please let me know.


Hope this helps and good luck.

 

[reconj]

I go to a few of the Hunts, All of the coins are just a few inches down, The setting that you have should nail the coins that you want--don't need to go down 5 to 12 inches. Don't need to find the older stuff at a coin hunt----Old Rule---Keep it simple or --Keep the Setting Low--Hope this helps--On the pinpoint of coins---Used the tip of the coil, 2in back---works for me for---Speed---and thats the name of the game in a Coin Hunt------

 

[Idaho-Marke]

n/t

 

[alton]

That includes Neugene's machine. I never heard anything but my own. No problems whatever. Don't worry!

HH Alton

 

[Charlie P. (NY)]

I used my F-75 at our club hunt and I had no problems with other machines. One fellow using an older (15 yr +/-) Fisher claimed I was bothering him so we stayed apart.

For pinpointing: sweep in one direction and then turn the coil (and unit/yourself) 90