JK403 - Yagi antenna of 3 elements for the 40 m band on a 30 feet (9.14 m) boom.
JK403 NEC image
The JK403 is a great performer antenna on a 30 ft (9.15 m) boom for 40 m. This antenna has excellent F/R and gain while maintaining a decent SWR bandwidth. The antenna is made with our high quality, heavy duty materials and hardware. The element construction does not need trussing unless you live in extreme snow/ice conditions. We can also provide you with custom settings to suit your operating preference such as peaking your gain and F/B in the CW portion or the Phone portion of the band.
Free space antenna pattern
JK403 SWR plot
Approx wt. = 125 lb (57 kg)
Wind Area = 8.40 sqft (0.78 m2)
Max Wind Speed = 100 mph (161 kph)
Max Turning Radius = 28.6 ft (8.72 m)
Boom = 2" OD / t=1/8" (51 mm OD / t= 3.2 mm) wall
Feedpoint = Shunt coil match/50-Ohm
Power = 5 kW Avg or Balun restricted
JK403 - Yagi antenna of 3 elements for the 40 m band
- Brand: JK Antennas
- Product Code: JK403
- Availability: In Stock