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Cushcraft R9
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.
The R9 is the first multiband vertical designed for the rigors of contemporary operating conditions. 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.
Due to the considerable length of over 9.6 m. the antenna needs a three point non-conductive guy system. Add the Cushcraft R8GK or use Parafil for guying.
Specifications
| Frequency range | : | 50-28-24-21-18-14-10-7-3,5 MHz band |
| Gain | : | 0 dBd |
| Heigth | : | 9,6 m |
| Radial | : | 7 pcs. each 1,25 m |
| Bandwidth (SWR< 2:1) | : | 6 m > 1500 kHz |
| : | 10 m > 1500 kHz |
| : | 12 m > 100 kHz |
| : | 15 m > 450 kHz |
| : | 17 m > 100 kHz |
| : | 20 m > 350 kHz |
| : | 30 m > 50 kHz |
| : | 40 meter 150 kHz |
| : | 80 meter 35 kHz |
| Vertical radiation angle | : | 16° |
| Max. power | : | 1,5 kW PEP (w/o speech processing) | 750 W CW | 500 W FM/PSK |
| Windload | : | 0,37 m2 |
| Mast size range | : | max. 50 mm |
| Weight | : | 11,5 kg |
Dimensions and weight are including packaging
| Dimensions |
: |
L220 x B16 x H16 cm |
| Weight |
: |
15,00 kg |