Re: [AMRadio] 1500 KHz trap for NC-156

2008-08-09 Thread Larry Szendrei
Thanks to all that responded, still digesting the all the great information. Not much radio time left to play this weekend, but will try to play with it some more during the week after work, and when I get something working to my satisfaction, I'll report back. Much appreciated. 73, -Larry/

Re: [AMRadio] 1500 KHz trap for NC-156

2008-08-09 Thread Jim Tonne
Gents: I just called on my favorite filter design program Elsie and came to the conclusion that going clear down to about 3 uH (resonated with 3000 pF) would be advisable in a 50 ohm system. The two items would be connected in parallel to form a trap, and that trap would be placed in series wit

RE: [AMRadio] 1500 KHz trap for NC-156

2008-08-09 Thread John Coleman
Hi Larry You are correct in the thinking of a higher Q (more C less L) however it is very important the lower L factor be made of larger wire with proper spacing (a high Q type coil). There are special dimensions and wire spacing to be considered for a high "Q" coil assemblies. I won't go

RE: [AMRadio] 1500 KHz trap for NC-156

2008-08-09 Thread John coleman
Hi Larry You are correct in the thinking of a higher Q (more C less L) however it is very important the lower L factor be made of larger wire with proper spacing (a high Q type coil). There are special dimensions and wire spacing to be considered for a high "Q" coil assemblies. I won't go