WB7TEM
| Joined: | Sat, Apr 4th 1998, 00:00 | Roles: | N/A | Moderates: | N/A |
Latest Topics
| Topic | Created | Posts | Views | Last Activity |
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| Unun design for digital (FT8) | Nov 11th, 14:45 | 2 | 241 | 4 days, 5 hours ago |
Latest Posts
| Topic | Author | Posted On |
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| Unun design for digital (FT8) | WB7TEM | 2 weeks, 6 days ago |
| I am looking for a unun design for 100% duty cycle operation in the HF bands. I want to be able to run 300 to 400 watts out, if needed on FT8. I want to place the unun at the point where the coax enters the shack. In my reading I decided to go with a toroid configuration, specifically FT240-43 With 14AWG wire. I believe a double stack of cores would dissipate the generated heat. The thing is, I haven't found a drawing that shows how to wind the cores. Can you help? Thanks. John, WB7TEM |
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