I used multiple signal samples and in the fly back wave...... and the real trick then was multiple sample widths ..... steal have it some where in the barn last time i looked..... i wanted to learn and dabbled in microelectronic source and C code. Wanted to build underwater robots that would harvest gold and salvage ... but so many projects..... at the time like Eric's machines any time you loaded a discrimination circuit into the matrix it lost depth....So naturally you had to have the deepest circuits with a lot of variables to work around even the battery and voltage used can drastically effect Noise .....So i made a deep pulse and had a multi switch to toggle in to very different samples... 2 pots to adjust the amount of iron discrimination.... it knocked out or bonged on a hammer but give a sweet sound on U.S. nickle........kinda like the old tr water machines i started out with..... after playing with that i focused all my attention on sound and target audio manipulation the Cuda also had a No motion mode 30- 40 percent deeper if you had the swicth and Pot to tune no motion...... Yes i still have my Barracuda's...... I am now retired since 2015 and pretty much do what i want when i want ... got 2 grand sons and look forward to teaching them to waterhunt land sea and Air......
did not mean to get off in a tangent...... Shawn,my Son and I still hunt pretty regular year round we find nice stuff we focus on 1700's rest just gets in the way....
I watched the french gentle Man with his Mantis and listened closely to the audio even though the targets where on top of the ground....Beach the crossed Nails with the gold ring under.... it I assume......Very Impressive..... And i must Say... I did like the Audio ......the right pitch is critical the sounds seem spot on .....these things have to have volume if you want hear over your regulator.....fisher was the first water phones i copied ...i was a fisher repair center back when they where still in California ..... I have most of the Fisher schematics in my collection as well as Nautilus 2b Jerry Tyndall schematic that he signed when i was visiting him and helping build coils to learn firsthand from the Master..... Jerry is good people, he had the first patent on TR discrimination......gave me the key to his shop...liked his albino squirrel Moe at his house..... I told him first sign of snow i would be going back south.....I used to bend handles for his 2 b in my barn....... and many more schematics..... Past 5 years rebuilding telefunken other classic tube radios ...just what i needed more projects.... but i cant resist.... just have to have my hunt time chasin ole yeller....
[attachment 359276 jimP1840.JPG]
three years need to make it happen technology waits for No one..... needs to be tested in the (USA) the Market
Happy Trails
jimpugh
did not mean to get off in a tangent...... Shawn,my Son and I still hunt pretty regular year round we find nice stuff we focus on 1700's rest just gets in the way....
I watched the french gentle Man with his Mantis and listened closely to the audio even though the targets where on top of the ground....Beach the crossed Nails with the gold ring under.... it I assume......Very Impressive..... And i must Say... I did like the Audio ......the right pitch is critical the sounds seem spot on .....these things have to have volume if you want hear over your regulator.....fisher was the first water phones i copied ...i was a fisher repair center back when they where still in California ..... I have most of the Fisher schematics in my collection as well as Nautilus 2b Jerry Tyndall schematic that he signed when i was visiting him and helping build coils to learn firsthand from the Master..... Jerry is good people, he had the first patent on TR discrimination......gave me the key to his shop...liked his albino squirrel Moe at his house..... I told him first sign of snow i would be going back south.....I used to bend handles for his 2 b in my barn....... and many more schematics..... Past 5 years rebuilding telefunken other classic tube radios ...just what i needed more projects.... but i cant resist.... just have to have my hunt time chasin ole yeller....
[attachment 359276 jimP1840.JPG]
three years need to make it happen technology waits for No one..... needs to be tested in the (USA) the Market
Happy Trails
jimpugh