Shortwave receivers are widely used when hiking or by hams who like to communicate with people all over the world via these radio devices. If you are going to use a shortwave receiver, good wave reception is essential. In this article, we will describe how to make a portable shortwave antenna.
- Building wire or black iron wire.
- Cable number 16 (preferably any type - flexible and lightweight cable - can be used).
- Telephone cable.
Mounting of the portable shortwave antenna
Before we begin, it is extremely important to warn that we must never attach our antenna to the power line, as the shock can be lethal. Now, with this warning in mind, we proceed to describe the assembly of our portable antenna, which has three well-defined parts: the hook, the antenna body and the coupling winding (if necessary).
We started to put together our antennaThe hook should be placed on the branch of a bush, on a window frame or on a clothesline, and it should be used to create a good hook. To create the ideal hook, we take approximately 30 cm of construction wire and bend it into a hook, leaving an eyelet to connect the body of the antenna or simply take a hook used for hanging clothes (just the hook).
Once the hook is made, we proceed to create the body of the antenna, which is simply an extension of number 16 wire. We will only have to use one side of the wire, as these wires are double, so we take about 6m of wire and loop one end of it to the eyelet of the hook. While the other end, we place it in the antenna input of the shortwave receiver. In case you do not have this type of input, we must make a coupling winding.
Making the coupling winding is very simple, we remove the sheathing from several metres of telephone cable. Once this is done, we remove the insulation from the telephone cable about 2 cm from one end and connect it to the free end of the antenna body, reinforcing the connection with electrical tape.
Now, we unfold the antenna of the radio receiver and make a winding with the telephone wire, about 30 to 40 turns, and we have our winding ready, it only remains to place the hook on a tree branch and test our portable shortwave antenna.
It should be remembered that the longer the body of the antennaIf you are not able to receive programmes, the reception of programmes will be much better.