End Feed Antenna 1:64 HAM SDR HF Antenna 6-band 1.8-50MHZ 1.8M 7M 14M 21M 28MHZ

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End Feed Antenna 1:64 HAM SDR HF Antenna 6-band 1.8-50MHZ 1.8M 7M 14M 21M 28MHZ
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This antenna is a portable end feed antenna in the field, weighing only 190g, portable and easy to carry. It adopts oxygen free copper vibrator with high emission efficiency. It adopts 1:64 balun to realize multi band natural resonance (7MB, 14m, 21m, 28m and 50MB). It supports a variety of erection methods, and the reception performance is 1-2s better than GP antenna. It is an ideal field antenna.
Due to its excellent portable performance, it is very suitable for frequent outdoor activities, mountaineering, camping and field station erection. With QRP radio, it can often achieve good communication effect in the field. It is recommended that the erection height is more than 4m. If the erection height is 6m, the performance will be ideal.
The 40m long line is used with the fishing boat to make the storage convenient and fast. The fishing wheel belt has the functions of one-way locking and left-hand and right-hand switching. There is no need to worry about knotting and winding.
1、 Packing list:
1) 1 to 64 barons * 1
2) Aluminum alloy fishing wheel * 1
3) 0.5mm pure copper vibrator 20m
4) 0.5mm fishing line 15m
2、 Main parameters:
1) Frequency range: 7 / 14 / 21 / 28MHz (natural resonance in these four frequency bands)
2) Input impedance: 50 Ω (unbalanced)
3) Output impedance: 3200 Ω (unbalanced), suitable for long line short wave antenna
4) Balun transformation ratio: 1:64
5) Balun interface: sl16k (M female)
6) Standing wave ratio: less than 1:1.5
7) Withstand power: 70W (SSB CW < 70W, FM AM FSK FT8 < 50W)
8) Overall dimension: 63x58x35mm
9) Weight: 190g (net weight, excluding outer packaging)
10) Maximum tensile force of shredded fish: 6kg
11) Maximum tensile force borne by enamelled wire: 3.5kg
12) Maximum tensile force of stainless steel lifting ring: 8kg
3、 Erection method:
1) Horizontal erection (recommended)
Horizontal erection requires 2 support rods, and the effect is ideal.
2) Cable stayed erection
The second is cable-stayed erection, which can be less than one strut, and the other end can be nailed to the ground or thrown into a tree.
3) Inverted V erection
For inverted V erection, the support rod shall be made of insulating material. Hang about 1 / 3 of the vibrator on the top of the support rod, pull down both ends and fix it with ground nails.
4、 Materials required:
1) Light feeder * 1
Considering the limited tensile capacity of the vibrator, the overall mass of the feeder must be within 500g. It is recommended to use rg316 wire, and the loss of 10m is about 1.7db.
2) 6m support rod * 1
It is recommended to use a net reading rod or fishing rod, as shown in Figure 1.
3) Wind rope * 2
One of the wind ropes is used to counteract the tension of the antenna vibrator. The use method is shown in Figure 1. It is fixed on the ground opposite to the tension direction of the vibrator, and can be firmly tied with branches, ground nails, etc.
Another wind rope is used to keep balun about 2-5M away from the support rod to prevent the support rod from affecting the antenna.
The fishing boat can not use the wind rope, because it has brought its own 20m fishing line, which can be used as the wind rope.
5、 Precautions:
1) The enamelled wire used by the vibrator is relatively thin. When using, pay attention not to bend or wind to avoid breaking.
2) The antenna is a portable antenna used in the field and is not suitable for long-time erection.
3) If it needs to be erected for a long time, replace the solid vibrator by yourself.
4) Balun resistance power 70W, long-time transmission, please pay attention to the change of standing wave ratio.
5) Balun uses a waterproof box shell, but because there are holes in the top, do not use it in rainy days.
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