Antenna parameters:
Frequency: 40m amateur section 20m amateur section*, power 200W
Storage length: 53CM
Net weight: 1.3Kg
*Other frequencies need to be adjusted by yourself. It can be used for the 30-meter section by shortening the whip antenna under a 40-meter assembly, and can reach 18M, 21M, 28M, 51M and other frequencies by shortening the whip antenna under a 20-meter assembly (talent adjustment is recommended).
Full antenna kit includes
1, 5.58m tie rod×1;
2. 40CM extension rod×1;
3. Ground network pin×1;
4. Ground mesh stainless steel sheet×2;
5. GP antenna base×1;
6. Induction coil×1;
7. Grounding grid terminal × 4;
8. Ground network cable×4
Antenna can be disassembled for easy packing
The 40-meter wave band pull rods are fully pulled out, connected to two ground nets (or four), the frequency resonance is around 7.050Mhz, and the 20-meter wave band is connected to four ground nets, the largest section of the rod antenna is not pulled, and the second section is pulled out about 13cm , The frequency resonance is around 14.270Mhz. It should be noted that the frequency of different installation locations will vary due to the fertility, humidity, and surrounding objects. This can be changed by adjusting the length of the tie rod. When the tie rod is moved about 1cm at a time, the frequency of the tie rod will be shortened and the frequency will increase. Long frequency decreases.
The antenna standing wave is shown in the figure below, and the bandwidth covers the amateur section.
The 20-meter band of this antenna is the standard quarter-wavelength natural resonance. Find a place with fertile soil to set up the antenna, or insert a ground pin on the water, lake, or place with high conductivity, and pull the ground net. The efficiency is not as horizontal and positive. The V antenna is bad, but if the soil is bad, the effect will be compromised. This antenna uses an induction coil in the 40-meter band, and its efficiency is definitely worse than that of a standard quarter-wavelength antenna. If you want the effect to be good, your antenna needs to be about 10 meters long in a day.
The antenna is easy to carry, light in size, easy to carry with a backpack, and convenient to mount in the field. The antenna is made by hand and has traces of production, which cannot be as good as an industrial product.
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