The article “Acupuncture for metal”, published in the journal “modelist-Konstruktor” No. 2, 1974, provoked numerous responses, not only individual readers, but also many businesses and organizations. Editorial Board, ENEA USSR and VNIIST continue to receive letters and inquiries on the subject.
Hams know how sometimes when soldering they do not have a third hand to fix a small detail. At the time it was proposed many devices that can help in such a situation (see, for example, the magazine “modelist-Konstruktor” No. 10’1996). In particular, I use a fixture, which is made in just a few seconds.
SMALL SPOOL, BUT PRECIOUS!
the 
(the End. The beginning see in # 9-11)
A simple design of the airframe suggested that the German model airplanes G. Jung and C. Rosa (Fig. 1). The model has good performance and can be built athletes having small practical experience.
A conversation with the Secretary of Donetsk regional Committee of the Komsomol failed: Mikhail Bondarenko was enthusiastic technical creativity of youth in his native mining region. Easy, to remember names, events, and even interesting design.
When the father works in the barn, the door often slams shut from the wind. To avoid this, he inserts it under the shovel which breaks down a lot. I offered to make a turn. Attached it to the doorframe when the door is opened the turntable rotates and locks the door. G. POTAPOV, Read more…
Informing about the occurrence of an event, people often use sound signals. Usually they have the character of a continuous sound “one note” annoying “beep-beep” or howling siren with a periodically varying frequency. Generators of electric vibrations, producing these signals is also straightforward. They are based on one-two multivibrators, which makes the structure very simple, accessible to even beginners repetition hams.
To reduce the ripple in the filter of the rectifier sometimes try to put the capacitor as much as possible capacity. However, this is not always safe for the semiconductor valves.
This is the first-born of the joint helicopter program of Germany and Japan. Serial production of VK-117 deployed in 1982.