Antenna

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)

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 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)

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 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)

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 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)

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)

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)

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)