Will a 40m dipole work on 20m?
Member. You can also get a pair of 20m traps then cut your existing antenna to the recommended size then tune for 20m, then add wire back after the traps to resonate on 40m again. That will make a 20/40m dipole that will be a little shorter than what you have now and work both bands without messing with anything.
Will an 80 meter dipole work on 160 meters?
For use on 160, the 80 meter dipole becomes a T-shaped (top loaded) vertical radiator, fed against ground. The vertical section (the “feeders”, ladder line, window line, or twin lead for 80, 40 or 20) function as the principle radiator.
How high does a 40 meter dipole need to be?
For best results, dipoles should be at least 1/2 wavelength above ground level. For the lower bands, especially 160-40 meters, this can become impractical–place your dipole as high as your situation allows.
How long is a 40m dipole?
Read more about . . . . Dipole Length Calculations.
| Approximate Lengths for HF Ham Band Dipole Antennas | ||
|---|---|---|
| Band (MHz) | Length (Feet) | Length (metres) |
| 7.0 MHz (40 metres) | 68.5 | 21.1 |
| 10.1 (30 metres) | 47.5 | 14.7 |
| 14.00 (20 metres) | 34.3 | 10.6 |
How high does a 20 meter dipole need to be?
20 feet
Height Matters, a Lot! 20 Meter Dipole at 20 feet.
How long is a 15 meter dipole?
The Wire Size can range from 16 AWG to 12 AWG. The larger the wire, the wider the bandwidth. The antenna is designed to be fed with 50 or 75 Ohm Coax Cable of most any length with a Balun. Place a 1:1 Balun on the Antenna end of the Feedline….Dipole Antenna Calculator.
| 20 Meters | ||
|---|---|---|
| 18.068 | 25.90 | 12.95 |
| 18.130 | 25.81 | 12.91 |
| 15 Meters | ||
| 21.000 | 22.29 | 11.14 |
How high should an 80m dipole be?
At a height of thirty-five feet, the 80 meter dipole constructed according to the classic formula and directly fed with 50 ohm coax exhibits a better SWR of 1.1:1 at resonance, but has a 2:1 bandwidth of about 150 kilohertz and a 1.5:1 bandwidth of only 100 kilohertz.
How long should a 40m dipole take?
How long is 40 meter dipole?
The antenna isn’t really all that long, just 66 feet. The band is often open in the evening. Unlike 80m, which is full of nets, 40m is more open and you can call CQ and hope to get an answer.