Quote:
Originally Posted by Geo
Thank you Enjoykin4.
I found (ordered) UD13 and will try them first, if no results will try a different as you suggeste.
About UD7 what do you think for the LM741 at metal can???
Also do you know the project that adding to IGA-1 a narrowb software tunable filter as Vega??
Do you remember the distance between the 2 antenna disks???
Sorry for many questions but i collect info for next winter.....
Regards 
ps... you can connect with me at gvrond@excite.com |
Hi Geo !!
All Russian OPs are in metal case so use only metal case analog.
I dont know about narrow band filters schematic. Try first analog schematic without filters and than you can design own nb filter stage. Or use filters from some Tessoro metal detectors with some modifications. Distance about 10 cm. This should be estimated experimenatly according to your design for maximum sensitivity !!
Best regards
enjoykin4