Garret Grand master hunter

[nelson]

Hi, does anyone knows how to make the two box coils for Garrett Master Hunter?
Regards
Nelson

[Eugene52]

Garrett Grand master hunter

I searched the archives here on Geotech and very little has been mentioned . Hopefully another member will post all data , the dimensions , resistances , number of windings and what type of metal is used on the coil frame . Is your garrett a CX-3 ?? I think the frequency is around 6.5 khz??.......... It is the holidays so waiting for answers may take a few days !!!................Regards...........Eugene52

[nelson]

Hi Eugene and many thanks for help. Yes i think that after the hollidays i ll try again. My Garrett is Grand Muster Hunter and i m not shure if is it CX-3.
A frind of mine, has another Garrett with tha coils you post here, but he reported bad deep with it. May be i can make some arrengement to have borrow his coil and try somo pictures and data from it.
Sorry for my english, take care and have a happy new year.
Kind regards
Nelson

I searched the archives here on Geotech and very little has been mentioned . Hopefully another member will post all data , the dimensions , resistances , number of windings and what type of metal is used on the coil frame . Is your garrett a CX-3 ?? I think the frequency is around 6.5 khz??.......... It is the holidays so waiting for answers may take a few days !!!................Regards...........Eugene52

[Eugene52]

Garrett Grand master Hunter

Happy New Year again Nelson !!! You know , if you are in a hurry , while you are waiting there is alot of stuff you can do . 1. Measure the tx and rx resistance value of you garretts search coil and post it here . 2. Try to search the internet for the exact dimensions of the two square garrett coils used for the two-box. 3. Check the two box archives on this forum. I did some research today and I calculated two circular coils at 38 centimeter diameter each , then bent to a rectangle. The tx would be 30 turns of 0.4 mm gauge enamel wire and the rx could be 75 turns of 0.4 enamel wire . Then shielded with aluminum foil . If I am wrong , we sure will get a lot of responses now !!!.......I am still researching , and you are very welcome to post here , the resistance reading's of your garrett crossfire coil !!!!.............Regards........Eugene52

[nelson]

Hi Eugene.
I m just comming back today from vacations on the beach. So i ll take the time to measure the resistance and inductance of my garrett coil.
Then i ll try to make a test using your data.
Later i ll post more on this.
Many thanks
Nelson

Happy New Year again Nelson !!! You know , if you are in a hurry , while you are waiting there is alot of stuff you can do . 1. Measure the tx and rx resistance value of you garretts search coil and post it here . 2. Try to search the internet for the exact dimensions of the two square garrett coils used for the two-box. 3. Check the two box archives on this forum. I did some research today and I calculated two circular coils at 38 centimeter diameter each , then bent to a rectangle. The tx would be 30 turns of 0.4 mm gauge enamel wire and the rx could be 75 turns of 0.4 enamel wire . Then shielded with aluminum foil . If I am wrong , we sure will get a lot of responses now !!!.......I am still researching , and you are very welcome to post here , the resistance reading's of your garrett crossfire coil !!!!.............Regards........Eugene52

[Eugene52]

Garrett Grand master hunter

Hi Eugene.
I m just comming back today from vacations on the beach. So i ll take the time to measure the resistance and inductance of my garrett coil.
Then i ll try to make a test using your data.
Later i ll post more on this.
Many thanks
Nelson

Welcome Back Nelson , I found out that Garrett makes Two different "Treasure Hound Two-Box coils" . One is designed special for the Garett model GTI-2500 and the other is designed special for the Garret CX that you own . I found a new picture and you can see the coils are in a Plastic housing , NOT METAL !!! The search coil on your machine now should be a maximum 8.5 inch . Then Measure with oscilloscope , the TX frequency and signal voltage peak to peak . You should have plenty of information to start winding some test coils !!! Only two things are missing , the 100% exact coil dimensions and knowing if or if not the coils have some type of shielding . That is all I can find out for you , at this time. Maybe someone else here on Geotech has all the specifications you need for this search-coil .................Regards........Eugene