Recently i got oldie Eldorado on service.
Cable at the very coil surface was "munched" and broken on many places so i had to fix it. I had to dissasemble coil and replace cable.
Coil was not easy to open, yet i did it.
Inside i found DD coil with 19cm outer diammeter.
Faraday cage is formed from blacklead layers sprayed on both covers and connected with steel naked wire inbred in plastic and also good sprayed with blacklead. Ok...so i replaced cable, glued all on its place and closed the coil.
Despite the fact device is very old and used so many times, when switched ON it started to work excellent. No falses, all modes and presets are workable.
Generally i am satisfied with what i got.
"Depths" in air are not so great as achieved with handmade TGSL yet Eldorado is descent detector. Discrimination is just very good.
I like GEB multiturn pot solution - very precise and accurate.
All Metal mode is just fine.
There is certain nonlinearity reffered to treshold in All and Disc modes. When treshold adjusted to best suit Disc mode - not good than when switched in All Metal mode - must be readjusted. This would be my only remark.
At present setup frequency is 9.8kHz. Coil inductances are 6 and 6.5mH...
Resistances are 21.6 and 20.8 ohms...
Cable at the very coil surface was "munched" and broken on many places so i had to fix it. I had to dissasemble coil and replace cable.
Coil was not easy to open, yet i did it.
Inside i found DD coil with 19cm outer diammeter.
Faraday cage is formed from blacklead layers sprayed on both covers and connected with steel naked wire inbred in plastic and also good sprayed with blacklead. Ok...so i replaced cable, glued all on its place and closed the coil.
Despite the fact device is very old and used so many times, when switched ON it started to work excellent. No falses, all modes and presets are workable.
Generally i am satisfied with what i got.
"Depths" in air are not so great as achieved with handmade TGSL yet Eldorado is descent detector. Discrimination is just very good.
I like GEB multiturn pot solution - very precise and accurate.
All Metal mode is just fine.
There is certain nonlinearity reffered to treshold in All and Disc modes. When treshold adjusted to best suit Disc mode - not good than when switched in All Metal mode - must be readjusted. This would be my only remark.
At present setup frequency is 9.8kHz. Coil inductances are 6 and 6.5mH...
Resistances are 21.6 and 20.8 ohms...
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