TV antenna can only receive the economy, Sichuan, Guang'an, Central Seven channel and receiving unstable home only a ~ how to use it as a multi channel can receive several simple antenna teach master wang...
If you have the conditions, you can use the Bobbi meter to test, see the frequency at which the resonance, and properly trim the core length, can be transferred to the 1:1.5. If there is no condition, then after the completion of the production, according to the formula provided before to calculate the final length (multiplied by the shortening parameter 96%) pruning.Not over HAM can think of it as an introductory training, but don't assume it will have very high gain, but in many cases, it is better to rubber antenna, telescopic antenna than it would be for the handset! But with high gain Yagi and J type cannot be compared. When outdoors, hang it on a tree or other height, and you will find it better than your usual rubber or pull rod antenna! And because it's a cord, it will be very convenient to pick up.Another friend asked if it was soft and how to use it It's simple to use a wooden stick or a PVC tube and other non-conductive materials (not using iron, aluminum, stainless steel tubes, etc.) to hold it up.TAGS: Radio - antenna
To make an antenna, first of all, you know the launch channel of the local TV transmitter. Again, depending on the number of channels on the program. The choice of signal strength is suitable for antenna shape. Such as single split vibrators, directional multi cell and multi-channel combination type.Baidu has a simple television antenna production, there are many can access the clever production size, physical pictures and production methods,. Can be described as multifarious, full range. The main materials: copper, copper, aluminum, easy open, feeder. Etc..These two are Baidu pictures, two of which are.
The television antenna is arranged in a zigzag shape, and the middle part of the antenna is respectively connected with the ends of the cable. The wire antenna is used to pass through the can through wire, and the lower part is fixed with a wood blockWireless network antenna, primary chapter: use cans to enhance antenna signalGeneral household wireless AP signal is limited, if through the two or three wall signal is more weak, will lead to the slow transfer rate, even broken often, if you live in large-sized apartment users, more profound experience, therefore, here's how to use cans of the most common, to enhance the internal signal antenna AP.Before you talk about the design principle, according to the principle of reflection signal, in a semi-circular surface signal will converge to a point, so the center of the circle is the focus, if the radius of the semicircle, can signal receiving and reflection is more, this principle will be tested after.Tools and materials needed:1. Electrical tape or transparent adhesive2, a knife3, a pair of scissors4, aluminum cans here: to test the effect of using three kinds of materials, namely Sprite aluminum cans large loading capacity Pringles cans, beer cans and 355ml 500ml in Haizhu.Step1 uses a designer knife to cut vertically along the top of the can. The lower cutter position can be considered to allow the pull to be on one side after cutting.
TV signal by the local environment, topography, and the impact of relatively large, so even if plus an antenna, the effect will not change much.
