Peeling antenna is a material easy to create simple, easy to carry the antenna.
If you can find one for you and coaxial cable used in the radio antenna plugs, we can the hands. Coaxial cable can use closed-circuit television with the feeder lines, the better the quality of the election, which is very important. The uneven quality of the CCTV feeder lines, there are three main points of choice, the first network to shield of the second is to wire rough, but taking into account ease of use, selection of wire can 75-5,75-7; Third Line The conductor is easier welding materials, many manufacturers in order to save costs, are cheaper but more difficult to use on-welding materials to produce feeder lines, so the prior application of electric welding the iron test, whether we can use to the other when the time spent on The results of the antenna do not welded together. Antenna plugs depends on your radio interface may be.
Below is the structure of the antenna:
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Step one: take a section of coaxial cable, the cable will be the length of the antenna with a total length of feeder lines, can be appropriate to stay a little longer.
Step 2: feeder lines from the quarter a measured wavelength position. Wavelength (m) equal to 300 / Frequency (MHz), in theory, should also be shortened by the last parameter of about 96 percent, but taking into account the production for a long time, it is not by shortening the first parameters. 145 MHz to be done if the antenna, will have measured the location for: 300/145/4 ≈ 0.52 meters of 29.6 MHz to be done is: 300/29.6/4 ≈ 2.53 meters; other band could be the length and frequency of the calculation Out.
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Step 3: In the measured step of a quarter wavelength, the cable cut the skin, Central, take care not to hurt cable.
Step 4: will be out of Pyla.
Step 5: coaxial cable down the release, this is a Xihuo, to be a little bit slowly.
Step 6: Anti-line network sets of coaxial cable in the outside, so called peeling ~ ~ Oh.
Step 7: the original stripping out the leather back, this step can be omitted, but in order to handsome……
Step 8: A tape of the type of package, especially the bare Louzaiwaimian shield cable. Have a friend with thermal control, as done even more beautiful, of course, costs are also high points.
Step 9: In the coaxial cable installed on the other end plugs so loaded to the radio on. Q9 is here to the head, you need to choose your type of radio plugs.
Step 10:Done!
If the conditions can be standing wave ratio measuring the table and see where a resonant frequency, the proper pruning core length can be transferred to 1:1.5. If no conditions, the production is complete, according to the formula provided in front of counting the final length (multiplied by 96% to shorten parameters) pruning.
Dong Guoshou the HAM can not put it as an induction training, but do not wishful thinking it would be very high gain, but in many cases, it will use the handhelds than rubber antenna, the effect of tension bar antenna is better! However, high-gain and the eight-, J-type, and so can not be compared. Outdoors, it will be pegged to a tree or other height, you will find it than your original ordinary rubber antenna or drawbars more outstanding performance! But also because it is soft line, or it will be very convenient.
Another friend asked that it is soft and how to » Very simple, one-Gen Mugun or PVC pipe, and other non-conductive material (not iron, aluminum, stainless steel pipe, and other conductors) it Chengqi to it.
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