1.8-50MHZ 50W HAM SDR Short-Wave HF Antenna 6-band Feed Antenna

Description

1.8-50MHZ 50W HAM SDR Short-Wave HF Antenna  6-band Feed Antenna
Description
Overview
This antenna is a portable end-fed antenna in the field. It weighs only 190 grams and is light and easy to carry. It uses oxygen-free copper oscillators for high transmission efficiency. It uses 1 to 64 baluns to achieve multi-band natural resonance (7M, 14M, 21M, 28 trillion, 50 trillion). It supports a variety of erection methods, and the reception performance is 1-2S better than GP antennas. It is an ideal field antenna.
Due to its excellent portability, it is very suitable for frequent outdoor activities, mountaineering, camping, and outdoor installation needs. With QRP radio, it can often achieve good communication effects in the field. It is recommended to install at a height of 4 meters or more. If the installation height is 6 meters, the performance will be better. .
The 40-meter-long line is used with fishing reels, making storage convenient and quick. The fishing reel is equipped with one-way locking and left and right hand switching functions, so there is no need to worry about knotting or entanglement when winding.
1. Packing list:
1) 1 to 64 balun * 1
2) Aluminum alloy fishing reel * 1
3) 0.5mm pure copper vibrator 20 meters
4) 0.5mm fishing line 15 meters
2. Main parameters:
1) Frequency range: 7/14/21/28MHz (natural resonance in these four frequency bands)
2) Input impedance: 50 ohms (unbalanced)
3) Output impedance: 3200 ohms (unbalanced) suitable for long-term short-wave antennas
4) Barron transformation ratio: 1:64
5) Balun interface: SL16K (M female type)
6) Standing wave ratio: less than 1:1.5
7) Withstand power: 70W (SSB CW<70W, FM AM FSK FT8<50W)
8) Dimensions: 63x58x35mm
9) Weight: 190 grams (net weight, excluding outer packaging)
10) Maximum tensile force of fish shreds: 6KG
11) The enameled wire can withstand the maximum tensile force: 3.5KG
12) The maximum tensile force of stainless steel rings: 8KG
Three, erection method:
1) Horizontal erection (recommended)
The use of horizontal erection requires 2 support rods, and the effect is ideal.
2) Cable-stayed erection
The second is the oblique pull erection, you can take one less brace, and the other end can be fixed on the ground or thrown on the tree.
3) Inverted V erection
Inverted V erection requires that the support rod is made of insulating material, hang the vibrator about one-third of the place on the top of the support rod, pull down both ends, and fix it with ground nails.
4. Required materials:
1) Lightweight feeder * 1
Taking into account the limited tensile strength of the vibrator, the entire mass of the feeder must be within 500g. It is recommended to use RG316 cable, and the loss at 10 meters is about 1.7dB.
2) 6m support pole *1
It is recommended to use a dip net or fishing rod, as shown in Figure 1.
3) Wind rope *2
The function of one of the wind ropes is to offset the pulling force of the antenna element. The method of use is shown in Figure 1. It is fixed on the ground in the opposite direction of the vibrator’s pulling force, and can be fastened firmly with branches, ground nails, etc.
The function of the other wind rope is to keep the balun away from the support pole by about 2-5 meters to prevent the support pole from affecting the antenna.
The fishing vessel does not need a wind rope, because it has its own 20-meter fishing line, which can be used as a wind rope.
Five, matters needing attention:
1) The enameled wire used in the vibrator is relatively thin, so be careful not to bend or wind it when using it to avoid breaking.
2) This antenna is a portable antenna used in the field and is not suitable for long-term erection.
3) If you need to set up for a long time, just replace the strong vibrator by yourself.
4) The balun resistant power is 70W, please pay attention to the change of standing wave ratio when transmitting for a long time.
5) The balun adopts a waterproof box shell, but due to the perforation on the top, please do not use it in rainy days.
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Returns policy
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2.For defective item, we guarantee free exchange or full refund within 30 days from the day of placing order
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4.Items must be unused, in original packaging and include all parts, accessories and packaging
5.When we receive your returned item, we will investigate the situation and consider to offer replacement or refund according to the situation
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