HOW TO SET UP THE ANTENNA?

HOW TO SET UP THE ANTENNA?Almost all users as a stationary radio stations (including those intended for civil radio on 27 MHz), and automobile radios and 4M AM (amplitude and frequency modulation) are faced with the need for optimal coordination of antenna-feeder devices (hereinafter — AFD) with the transmitter. To increase the range of a portable (wearable) mobile stations are sometimes also connected to respective external antenna, for Example, in the CBS range on an antenna called “5/8” vertical polarization and pin around 1450 mm That is the solution of the mentioned problem is important for all radio Amateurs with an active and effective (long-distance) communications.

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CORD PROTECTION

Cord electric soldering iron is typically not heat-resistant insulation. Therefore at its hit on a hot tip, perhaps a quick melt insulation and short circuit of wires. To avoid this, it is necessary to wear a cord round the required number of ceramic insulators that are used in the irons and frying cabinets. Plug contemporary Read more…

DOSIMETER RIDER

For reliable operation the two-stroke engine is a very important proportion of oil content in gasoline. In order to accurately observe it, make a simple dosimeter. On the high transparent glass or plastic containers with a volume up to 0.5 l of two metal clamps fasten the vertical scale with movable hands. Risks to apply Read more…

HELPS BRACE

To tightly connect the screws the two boards, you need to use the brace. From a set of versatile screwdriver select the appropriate tip and insert into the rotation in place of the drill. This significantly saves power and enough pressed on a fastened Board.   A. SYROTYUK, S. Krasnosillia, Rivne region.

BAR PLUS BAND

When processing large surfaces of metal or wood, each master uses to fasten sandpaper to any device. One of the simplest: a piece of wood, girded with a rubber ring This method is convenient because it allows you to quickly change the exhaust a strip of abrasive material by a new one.