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.
$ 639.95 Each
by Jim Wilson My contesting began as so many of my journeys begin – a simple entry with a great deal of discovery and learning along the way. Then, as... Read more
Features The RK-3xx series of switches uses vacuum relays. It is designed to switch coaxial lines in RF systems operating up to 5 kW continuous... Read more
40 MHz “In his telephone conversation Willem Badenhorst, ZS6WAB, informed us about the first-ever ZS to ZS contact on 40,675 MHz. It was made on... Read more
The next Kids Day will be Sunday, January 3, 2016, from 1800 to 2400 UTC. The twice-yearly event, sponsored by the ARRL and The Boring (Oregon) Amateu... Read more
both are on the threshold of departing their official positions with the League, ARRL President Kay Craigie, N3KN, presented ARRL CEO David Sumner, K1... Read more
Tim Peake KG5BVI with Yuri Malenchenko RK3DUP and Tim Kopra KE5UDN The next three crew members bound for the International Space Station are set to la... Read more
Amateur Radio television Pioneer and past ARRL Central Division Director Don C. Miller, W9NTP, of Waldron, Indiana, died March 22. He was 91. A... Read more
A viewer asks about some inexpensive coax they found online. Is it any good? We talk about that and why you may want to stay away from cable that has... Read more
On this episode, Christian visits with Jason, W3AAX. Jason is the North American Coordinator of the Worldwide Flora and Fauna program. We also get and... Read more
“If you are in the market for a high gain HT antenna for those fringe areas, this may be for you. The Diamond SRH770s is very flexible for porta... Read more
Recent Posts
Radio Contesting Journey – HF, VHF, Roving
Remote Vacuum Relay Switch, RK-314
FIRST ZS TO ZS CONTACT ON 8 Meters ( 40 MHz )
Kids Day is Sunday, January 3
Outgoing ARRL CEO David Sumner, K1ZZ, Honored with ARRL President’s Award
NASA TV to cover launch of Tim Peake KG5BVI
Amateur Radio Television Pioneer Don Miller, W9NTP, SK
Stay away from cheap coax
An Introduction to WWFF and JT65 : 100 Watts and a Wire: Episode 57
Super Gain HT Antenna By Diamond, SRH770S Dual Band
Warning: file_get_contents(https://plusone.google.com/_/+1/fastbutton?url=https%3A%2F%2Fqrznow.com%2Fcushcraft-r9-covers-61012151720304080-meters%2F): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found in /home/qrznow/public_html/wp-content/themes/goodnews5/framework/functions/posts_share.php on line 151
