Frequently asked questions
Check out what interests our customers, maybe this knowledge will be useful to you too!
Do I have to paint my flagpole in red and white stripes?
Read more: Do I have to paint my flagpole in red and white stripes?Regardless of the location of the mast (ground or building), structures below 50 m in height do not require reporting to the appropriate authority supervising military aviation (100 meters for civil aviation). The legal basis here is the regulation of the Minister of Infrastructure of June 25, 2003 on the method of reporting and marking aviation obstacles (Journal of Laws No. 130, item 1193…
In my area, the District Office expects PnB in relation to the mast on the building - is it right?
Read more: In my area, the District Office expects PnB in relation to the mast on the building – is it right?There are many indications that it does not. The legal system currently in force is the judgment II SA/Gd 329/14 issued by the Voivodship Administrative Court in Gdańsk. In the justification of the appeal judgment in this case (i.e. a building permit in the context of a mast on a building), the Court cited the content of art. 29 sec. 2 item 15 of the Building Law, as well as art. 30…
Does a radio mast require a building permit?
Read more: Does a radio mast require a building permit?Masts under 3 metres do not require a permit. Masts over 3 metres on buildings are subject to notification unless local regulations require a building permit.
How to properly arrange mast guy wires?
Read more: How to properly arrange the mast guy wires?The general rule is that it is best to place the guy wires symmetrically – for three-kerb masts, every 120 degrees when viewed in the horizontal projection. As for the distance of the guy wire from the mast truss in the vertical projection – it is generally accepted that the distance of the anchor point cannot be less than half the height of the mast. For example, for a 50-meter mast, the anchoring mark…
How to install antennas on a mast safely for the structure?
Read more: How to install antennas on a mast in a safe way for the structure?A telecommunications mast, like any truss, has node points that are its strongest points. It is worth applying all forces precisely in the vicinity of the nodes, because this minimizes the risk of damage to the whole. This is important when installing additional guy lines, securing ropes during the erection of the mast using the rotation technique, or even when choosing anchor points for antenna booms. A node point is a place…
What is a separation crown used for?
Read more: What is a separation crown used for?The crown has two tasks, the first is due to the need to move apart the transmitting antennas, e.g. sector antennas. The antennas have reverse radiation which can lead to interference and disturbances. Since the strength of the electromagnetic field decreases with the square of the distance - even a small separation significantly weakens the interaction of the antennas. It is worth checking the specifications of the devices in order to determine the minimum antenna separation recommended by the manufacturer. The second task…
How does aluminum welding technique affect weld strength?
Read more: How does aluminum welding technique affect weld strength?The quality of the weld is crucial for the safety of the product. At Alupro, we weld exclusively using the TIG technique on the best Fronius and Kemppi machines. TIG welding is quite slow, but guarantees deep penetration and high control over the quality of the weld. This is a method that allows for very clean and aesthetic welds, which is especially important in the case of production of elements requiring…
What makes some masts more expensive and others cheaper, where does the price come from?
Read more: What makes some masts more expensive and others cheaper, where does the price come from?The price of a mast is shaped by three main factors, namely the cost of the material, the time spent on its execution, and the quality of its execution. AluPro offers products of the highest quality, we do not try to be the cheapest on the market at the expense of the class of execution and safety. The cost of aluminum, the main construction material in AluPro, is subject to dynamic changes. The wholesale price of the material has changed by almost…
Are there any antennas for which the stiffness of the mast structure is of particular importance?
Read more: Are there any antennas for which the stiffness of the mast structure is of particular importance?Yes, these are all types of radio lines (and satellite links), with a focused and directional transmission beam. Assuming a standard deviation of the mast from the vertical by 1:100 of the height, the height of the mast is 30 meters - the displacement of the top reaches 30 cm. Over a dozen kilometers of transmission, this gives a multi-hundred-meter antenna spread. One of the techniques to combat this unfavorable phenomenon is the installation of a crown...
How to choose the height of a mast or tower to suit our needs (the case of a radio link)?
Read more: How to choose the height of a mast or tower to suit our needs (the case of a radio link)?In telecommunications, optimal antenna placement is determined by Fresnel zones, which ensure that their area is free from obstacles and minimize energy losses.
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