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    Antenna

  • The aerial type selecting in shortwave communication

    Shortwave communication is to point to wavelengh 100 - 10 meters (frequency is 3 - 30 MH z ) the radio that electromagnetic wave undertakes corresponds. Shortwave communication transmission channel is had change ginseng is characteristic, ionosphere

    Posted at 08-08-11 by Admin views(1791)

  • Of crossed antenna make Of crossed antenna make

    A lot of netizens had made many emissive circuit edition, also had used a lot of antenna, but have a fever friendly people always seek efficient emissive antenna, this kind of crossed antenna of the following introduction is the emissive antenna with

    Posted at 08-08-11 by Admin views(2119)

  • The 4th tell parameter of mobile system antenna to adjust

    The adjustment of 4.1 antenna height Aerial height is direct with base of the station enclothe limits to concern. Generally speaking, the signal that we measure with the instrument enclothes limits to suffer effect of two direction element: It is the

    Posted at 08-08-11 by Admin views(1041)

  • How to use standing wave to compare a list

    If will see standing wave comparing can express be with the viewpoint of power / of Pr) of of Po + of of SWR = ((Pr of of Po - ) Po: Enter the power Pr of aerial system: Ji of the low Xi that remove porcelain blows You Yu You grave Course operation S

    Posted at 08-08-11 by Admin views(1543)

  • The 2nd classification that tells aerial and choice

    The technical development of mobile antenna is very rapid, original China basically is used common directional and complete to model mobile antenna, use mechanical antenna generally later, the mobile net of city of a few provinces has begun to use re

    Posted at 08-08-11 by Admin views(1054)

  • Tear open close brace up child J antenna Tear open close brace up child J antenna

    Amount to of a kind of be similar in shape brace up child perpendicular polarization antenna, be called SLIM JIM aerial, already applied extensively in professional communication domain. Spare communication is planted fine thin amount to brace up chi

    Posted at 08-08-11 by Admin views(1158)

  • Symmetrical brace up child Symmetrical brace up child

    Symmetrical brace up child be a kind classical, use the most extensive antenna up to now, individual half symmetrical Zhen Zike establishs the ground simply to use alone or use the source of make a present of that regards paraboloid as aerial, also c

    Posted at 08-08-11 by Admin views(1044)

  • Suit the SLIM JIM antenna of any ham trial-produce Suit the SLIM JIM antenna of any ham trial-produce

    Right with the ham that likes to play VHF/UHF for, great majority likes him to make aerial, and more than a pair two pairs, because be in V/U paragraph, aerial stand or fall is very big to sending and receive the influence of the effect, and the loss

    Posted at 08-08-11 by Admin views(3690)

  • Suit self-restrained cabinet antenna Suit self-restrained cabinet antenna

    Truly cabinet, suit to abstain, complete the CobWebb antenna to 7dBi gain. Former contriver is British G3TPW, Website: Http://www.g3tpw.ukgateway.net 14, 18, 21, 24, 28 MHz 5 wave band, 7dBi gain, size wants 2.6 meters of square only. Much smaller th

    Posted at 08-08-11 by Admin views(3217)

  • Standing wave is compared - return loss the conversion that wait

    please Click here to get our dipole antenna Standing wave comparing Return loss Transmission loss Voltage reflexes coefficient Transmission power Power reflex (DB) (DB) (COEFF) (℅) (℅) 1.

    Posted at 08-08-11 by Admin views(1209)

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