Introduction Amateur radio Raising and lowering the antenna mast through the needle

Raising and lowering the antenna mast through the needle

Zdvíhanie a spúšťanie anténneho stožiara cez ihlu
Raising and lowering the antenna mast through the needle

The principle of raising the mast in this way is very efficient and the mast does not bend. The antenna mast has approx. 11m, called. needle 4.4 m. The anchors are 10m from the base. There is a pulley on both the remote armature and the needle. The result is a pulley system, which reduces the required force to 50%.

As such, raising and lowering the antenna mast through the needle shows and explains the video, which I did at the beginning of the summer:

In September round of VKV PA I raised a mast with two in this way 8-element DK7ZB yagi antennas on 144 MHz.

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