This is a updated collection of easy to build projects for radio amateurs and swl's. See all my projects in the OLDER POSTS down this blog.
Have fun.
73' John

Mutual respect is the key to global peace.....

Monday, July 17, 2017

IC-7300 preselector idea.

The IC-7300 has a signal overload problem. A preselector can be an option.
L1 - T80-2 .  L2 - T68-6 .  L3 - T50-6 .  T1 - T2 are 1:9 transformers. By adding a 470pF capacitor to ground between T2 and the polyvaricon the overall swr drops to a verry acceptable levell.

Disclaimer:I'm not responsable for any damage due to improper reproduction of my projects.