KJ4ZCV
| Joined: | Mon, Nov 15th 2010, 10:55 | Roles: | N/A | Moderates: | N/A |
Latest Topics
| Topic | Created | Posts | Views | Last Activity |
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| Basic Antennas - Seeking clarification | Feb 8th 2021, 05:04 | 2 | 5,568 | on 8/2/21 |
| Basic Antennas - Seeking clarification | Feb 8th 2021, 05:03 | 4 | 6,394 | on 8/2/21 |
Latest Posts
| Topic | Author | Posted On |
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| Basic Antennas - Seeking clarification | KJ4ZCV | on 8/2/21 |
| Thank you very much - that helped a lot | ||
| Basic Antennas - Seeking clarification | KJ4ZCV | on 8/2/21 |
| Hello - I’m reading ARRL’s Basic Antennas book, and on page 5-4, it says: The load impedance, resistive or complex repeats every half wavelength, for example. The impedance goes to the opposite extreme in odd multiples of a quarter wavelength. For example, our 25 Ohm load would get transformed to 100 Ohm in quarter or three quarter wavelength transmission line sections and vice versa. - What is meant here by “opposite extreme”? Opposite to what? What extreme? -How is the 100 Ohm value determined? - What is meant by “vice versa” here? Zero Ohms? Is there anyone who can refer to this section of the book able to throw light on this? Thank you! |
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| Basic Antennas - Seeking clarification | KJ4ZCV | on 8/2/21 |
| Hello - I’m reading ARRL’s Basic Antennas book, and on page 5-4, it says: The load impedance, resistive or complex repeats every half wavelength, for example. The impedance goes to the opposite extreme in odd multiples of a quarter wavelength. For example, our 25 Ohm load would get transformed to 100 Ohm in quarter or three quarter wavelength transmission line sections and vice versa. - What is meant here by “opposite extreme”? Opposite to what? What extreme? -How is the 100 Ohm value determined? - What is meant by “vice versa” here? Zero Ohms? Is there anyone who can refer to this section of the book able to throw light on this? Thank you! |
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