![Navassa 5 Elements [ K7AGE ] – : Part 9](https://qrznow.com/wp-content/uploads/2020/03/jka-navassa5_xl.jpg)
JK Navassa-5
2 Elements on 10M / 2 Element on 12M / 2 Elements on 15M / 2 Elements on 17M / 2 Elements on 20M / 12ft Boom
JK Antennas Navassa-5 Multi-Band Yagis interlace full-size 20, 17, 15, 12 and 10-meter elements on a single 12 ft. boom with a rugged 2 in. diameter. Named after the Navassa Island DXpedition, these antennas are based on a collaborative design effort by Daniel Horvat, E73M/N4EXA and JK Antennas.
JK’s unique design places full-size elements on a single boom and produces amazing 2-element mono-band performance on all 5 high bands! This results in producing good gain and great SWR bandwidth on all 5 bands. An optional 6-meter kit adds 2-more elements to make these antennas work on the 50 MHz Magic Band.
Mechanical details:
* Boom Length: 12 ft.
* Boom Diameter: 2.0 in.
* Wind Area: 8.97 Sq. ft.
* Maximum Wind Speed: 100 MPH
* Maximum Turning Radius: 19.45 ft.
* Longest Element: 36.8 ft.
* Element Construction: Stainless-steel through-bolts (no rivets or worm clamps)
* Mast size: Heavy duty U-Bolts supplied for 2 in. OD Masts
* Approximate Weight: 59 lbs.
* Power Handling: 5,000 watts (limited by balun selected)
* 1:1 Balun is required (not supplied)
These antennas have been designed to give the ham radio operator an excellent antenna for operation on all 5 high bands with automatic band switching and a single feed line. The short boom length was employed to keep the antenna compact and the installation simple. Navassa-5 antennas use direct 50-ohm coaxial feed with the all driven elements connected by a robust metal strap balanced transmission line. A high-quality 1:1 current balun is required. The COMTEK COM-BAL-11150DT is recommended for full power handling and best performance.
Like all JK Antennas, Navassa-5 beams are manufactured with high quality materials and hardware; like their larger low-band Yagis. A 1/4 in. (6mm) thick mast plate and all mounting hardware is included with these antennas.
When you think about working DX on the WARC and Classic High Bands using a high-performance Yagi, think about JK Antennas Navassa-5 Multi-Band Yagis.
| 10M | 12M | 15M | 17M | 20M | Optional 6M | |
| Active Elements | 2 | 2 | 2 | 2 | 2 | 2 |
| Gain at 65ft above ground | 12.56 dbi | 12.4 dbi | 11.79 dbi | 11.82 dbi | 11.39 dbi | 12.44 dbi |
| Gain in Freespace | 7.0 dBi | 6.8 dBi | 6.24 dBi | 6.36 dBi | 6.2 dBi | 6.65 dBi |
| Peak F/B | 12 dB | 12 dB | 12 dB | 12 dB | 12 dB | 16 dB |
| Peak F/R | 12 dB | 12 dB | 12 dB | 12 dB | 12 dB | 16 dB |
| 2:1 SWR Bandwidth | 800 Khz | Less than 1.5:1 | 450KHz | Less than 1.5:1 | Less than 1.5:1 | 800 KHz |
| 1.5:1 SWR Bandwidth | 600 KHz | 100 KHz | 350 KHz | 100KHz | 350KHz | 600 KHz |
| Max Element Length | 18.7 ft | 19.8 ft | 24 ft | 28.2 ft | 36.8 ft | 9.4 ft |
** All pricing shown assumes the basic mounting hardware. Additional costs may apply for customized mast plates and hardware.
** Pricing shown above includes Mast Plate and mounting hardware
Price : US$1,285.00 **
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