Layout of my first antenne
| Goal | End-fed wire antenna for the 20m-Band (any other band is optional) |
| QRP CW transceiver 5W output | |
| Design | The lenght of the wire is based on this calculation. |
| The length of the counterbalancd is about 1 m | |
| More details see at the diagram below | |
| Reactance matching | The antenna shall be in a resonante state |
| Inductive and capacitive reactance nullify each other | |
| This can only be controlled via the lenght of the antenna wire | |
| Impedance matching | The impedance of all involved components shall be 50 Ohm |
| End-fed antenna do have a footpoint resistance of about 400 - 500 Ohm | |
| Unun shall match this as closely as possible to 50 Ohm | |
| The subsequent antenna tuner does an exact match to 50 Ohm | |
| Feedback | Happy to get your feedback via E-mail or |
| via comment (see at the bottom of the page). | |
| Status | Work in progress :-) |
Layout
Measurements
Background
