One of the things that really stuck me was the sensitivity to tiny items that my old Fisher units missed or signaled weak on. Tiny drops of lead, BB's, .22 bullets, tiny cuff buttons, all sound "good" on the F75. Often it's loud even. Now, before folks run with that & think this is a pain, think of how super sensitivity translates to depth. Hopefully, SunRay will think about an onboard probe for the F75 as users will soon see a need for one after chasing a few BB's 
I pulled out my vibraprobe for the testing.
F- tones...My prototype has 1, 1F, 2F, etc. for tones....
I like running one tone at times, especially in thick iron, but the "F" is very cool for some applications. The "F" in the F75 tone display adds a cool variable pitch according to signal strength. So, when you hunt with "1F" the higher you go up the number scale, say a coin, really leaps out as a high pitch to your ears. Thus the higher the better as a quarter will be alot higher pitched than a tab.
BEACHES..I have used the F75 with some success on 2 different beaches here in New England. Even in the wet sand. Though the F75 won't have a salt-specific "process" or mode (was told it's a technical challenge w. a 1 frequency unit). It will however manually ground balance salt out which gives some salt water beach capability. I have also experimented running stable with the "bc" bottle cap process & sensitivity around 60 in wet sand. Now, disclaimer here would be that these are results from MY area, MY beaches. I don't know how much black sand or salt I have or others may encounter in their parts of the country....But I was enouraged with my beaches.
Some units get labeled as "good relic hunter" or "beach unit" for examples. But, it seems like the F75 is a good all around unit for multiple sites & hunting styles. In a short time I have tested for coins, relics, and jewlery with success....
HH,
Bill
I pulled out my vibraprobe for the testing. F- tones...My prototype has 1, 1F, 2F, etc. for tones....
I like running one tone at times, especially in thick iron, but the "F" is very cool for some applications. The "F" in the F75 tone display adds a cool variable pitch according to signal strength. So, when you hunt with "1F" the higher you go up the number scale, say a coin, really leaps out as a high pitch to your ears. Thus the higher the better as a quarter will be alot higher pitched than a tab.
BEACHES..I have used the F75 with some success on 2 different beaches here in New England. Even in the wet sand. Though the F75 won't have a salt-specific "process" or mode (was told it's a technical challenge w. a 1 frequency unit). It will however manually ground balance salt out which gives some salt water beach capability. I have also experimented running stable with the "bc" bottle cap process & sensitivity around 60 in wet sand. Now, disclaimer here would be that these are results from MY area, MY beaches. I don't know how much black sand or salt I have or others may encounter in their parts of the country....But I was enouraged with my beaches.
Some units get labeled as "good relic hunter" or "beach unit" for examples. But, it seems like the F75 is a good all around unit for multiple sites & hunting styles. In a short time I have tested for coins, relics, and jewlery with success....
HH,
Bill
