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