R-9 Verticale 6,10,12,15,17,20,30,40,80 M
• NO GROUND SYSTEM OR RADIALS NEEDED • RUGGED CONSTRUCTION • INSTANT BAND CHANGING • SLIM LOW PROFILE SILHOUETTE
This multiband vertical designs provide 9 band coverage encompassing the 6, 10, 12, 15, 17, 20, 30, 40 and 80 meter bands. Cushcraft achieved a major breakthrough in the development of an HF multiband vertical antenna that has been specifically designed for use with a tuner and amplifier. As a result, the antenna more accurately addresses the needs of the contemporary ham shack.
Multiband vertical antennas have always been complicated designs with components as likely to be damaged by high levels of mismatched transmit power as the rigs they are attached to. Before the use of tuners became widespread, the antenna was protected by the same safety mechanisms that protected the rig. Now, the automatic power reduction circuits of the past have actually become a second layer of protective circuitry. Although the auto-tuner provides the ham with a more versatile device as well as protecting the rig’s components, the antenna is more vulnerable than ever. With the press of a button, very high loads can be imposed on the antenna. The result to the antenna can be catastrophic failure in some instances.
Although the antenna is best operated within it’s 2.0:1 VSWR bandwidth,it can sustain a 3.0:1 VSWR mismatch at full power for typical operating intervals. Now radio amateurs can take full advantage of the versatility that a tuner used in conjunction with a multiband HF vertical antenna can give them. For high wind environments, add the R-8GK, Guy kit-three point non-conductive guy system.
13 septembre 2017
TS-590SGE 2 Anniversaire
Edition limitée du TS-590 SGE2, 150 unités seulment pour l’Europe, Spécial (...)
7 septembre 2017
IC-7610 disponible mi décembre 2017
L’IC-7610 sera disponible vers le mi-décembre 2017.
21 février 2017
Offre remboursement Yaesu
Offre de remboursement pour achat de la marque Yaesu jusqu’au 31 décembre (...)