Contents
- 1 Will a 40 meter dipole work on 80 meters?
- 2 How high does a 20 meter dipole need to be?
- 3 How long is an 80 meter dipole?
- 4 How high off the ground should a dipole be?
- 5 How long is a 10 meter dipole antenna?
- 6 How long is a 80 meter dipole antenna?
- 7 How does a multi band dipole antenna work?
- 8 How big is a rg8u mini dipole antenna?
Will a 40 meter dipole work on 80 meters?
A doublet antenna (dipole), cut for 80 meters, will not work on 40 meters because 7 MHz is an even harmonic multiple of 3.5 MHz.
How high does a 20 meter dipole need to be?
42 feet
20 Meter Dipole at 42 feet.
Will a 40 meter dipole work on 20 meters?
MFJ-17754 40/20M Dipole Antennas are shortened, coaxial-fed, 42 ft. long dual-band resonant antennas. While functioning as a full-size dipole on 20-meters, it’s also an ultra-efficient end-loaded dipole on 40-meters. You may operate these dipoles at up to 1,500 watts!
How long is a 40 meter antenna?
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 long is an 80 meter dipole?
Since an 80 meter dipole is approximately 130 feet long, and a 160 meter dipole is approximately 250 feet long, this space reduction can be critical in getting the antenna to fit into our typical backyards. Another often cited reason is that the inverted vee makes a better match to the typical 50 Ohm feed line.
How high off the ground should a dipole be?
Recommendation. 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.
Will a 20 meter dipole work on 10 meters?
Theoretically, it will work on 70 cm as a 31/2 wave antenna without a tuner. Connect the center conductor of the coax to the shield and feed the results as a “random” length through a tuner and you can probably get at least 80, 40, and 10-meters if not more.
How long is a 40 meter dipole antenna?
How long is a 10 meter dipole antenna?
A 10 meter dipole would be around 16 ft.
How long is a 80 meter dipole antenna?
Since an 80 meter dipole is approximately 130 feet long, and a 160 meter dipole is approximately 250 feet long, this space reduction can be critical in getting the antenna to fit into our typical backyards.
How big of a dipole do I need for Multi Band fan?
Here is a fairly simple and easy to build multi band horizontal fan type dipole that can be constructed for all band operation from 160 meters up thru 6 meters or even higher. In the drawing above, it is shown for just four bands, 80 thru 10. One separate dipole for each band needed.
How big is a 10 meter HF fan dipole antenna?
21 ft of rg8u mini for the “ugly balun”, and a chassis mount pl259. Top wire, for 40 meters, was 12 ga. thnn wire. Middle wire for 20 meters and bottom wire for 10 meters was 14 ga thnn. I drilled 3 holes in the copper strips 1/2 inches from the end and spaced them 6 inches apart.
How does a multi band dipole antenna work?
Feed eyebolt thru pvc pipe and copper strip and land wire on inside to copper strip. On bottom wire, drill a 1/4 inch diameter hole 2 inches below bottom hole and feed coax in and land this with the bottom 10 meter, wires.
How big is a rg8u mini dipole antenna?
21 ft of rg8u mini for the “ugly balun”, and a chassis mount pl259. Top wire, for 40 meters, was 12 ga. thnn wire. Middle wire for 20 meters and bottom wire for 10 meters was 14 ga thnn.