http://www.vk6fh.com/vk6fh/12au7regen.htm link above i did this regen.. i can get com am all day long.. will 700khz to around 1400khz. i try to add to the coil for com am. but it didnt help to get lower to 590khz. local good music station there.. i can not get it out of the am band. grrrr.. diff coils diff turn count. size. spread out a little tight on form... just not gettin it.. i have a coil of wire from a microwave fan. i think it would be in the 30g range. thin thin thread like.. i have some 20 or 22 mag wire. it would be pieced togther for any high count turns.. ideas what iam doin wrong? there is a link on the page to so called build of it.. and it works great it seem.. always that way hey lol .. works for others lol .. checked the coil sort of like the one in his image... it is top to bottm 5uh top to tap 3.3uh tap to bottom 2.3uh... that should put me in the 5 to 8 mhz range and nothing... no regen at all..