
VHF/UHF vertical antennas

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J-pole duoband vertical antenna
J-pole antennas have made a name for itself because of their high gain at a comparatively small small size. This type of antenna was invented early in the last century and was employed during WW2 for use in a Zeppelin and was therefore called 'Zepp' antenna. The electrical principle of the wire antenna for shortwave is the same as this J-antenna or J-Pole: a halfwave length or radiator fed by a quarter wavelength feed. The antenna has a grounded radiator and is thus immune to static charges. The feed requires just one coax cable even for the dual band antenna. The radiating elements for the dual band J-Pole are made of 10 mm aluminum tubes, the tubes for the 4 and 6m version are constructed from 25 to 35mm thick tubes. This results in a very solid design which gives you a longterm stability.
J-Pole Duo | EA4J | EA6J | |||
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Frequency Range | 140-150 + 420-470 | 70-70,5 | 50-54 | MHz | |
Gain | 6 | 6 | 6 | 6 | dBi |
Max. Power | 500 | 2000 | 2000 | W | |
SWR | ≤ 1.4:1 | ≤ 1.3:1 | 1,0:1~1,2:1 (1 MHz.) |
1,1:1~2,0:1 (2 MHz.) |
|
Height | 145 | 395 | 502 | cm | |
Max. Mast Diameter | 50 | 46 | 46 | mm | |
Weight | 400 | 3000 | 3500 | g | |
Connector | PL | PL | PL |
Order No. | |||||
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17790.DJ | J-Pole Dual Band Vertical Antenna 2m/70cm | 49.50 € | Add to shopping cart | In stock, shipped in 1 or two days. ⓘ | |
17790.4J | EAntenna EA4J Vertical Antenna J-Pole 70 MHz. | 105.00 € | Add to shopping cart | New | In stock, shipped in 1 or two days. ⓘ |
17790.6J | EAntenna EA6J Vertical Antenna J-Pole 50 MHz. | 115.00 € | Add to shopping cart | New | In stock, shipped in 1 or two days. ⓘ |
Info freight charges |