40M Monoband Yagi
JK403
- 3 Elements on 40M
- 30 Foot Boom
PriceUS$3,245.00**
BUY NOWThe JK403 is a great performer antenna on a 30ft boom for 40m. 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.
Specifications
JK403 spec sheet
| 40M | |
|---|---|
| Number Elements | 3 |
| Active Boom Length | 29.5 ft |
| Peak Gain * (dBi) | 7.16 dBi |
| Peak Gain * (dBd) | 5.06 dBd |
| Peak F/B | 23 dB |
| Peak F/R | 22 dB |
| 2:1 SWR Bandwidth | 175 kHz |
| 1.5:1 SWR Bandwidth | 125 kHz |
| Max Element Length | 47.5 ft |
Tap a band or swipe the cards →
40M
- Number Elements
- 3
- Active Boom Length
- 29.5 ft
- Peak Gain * (dBi)
- 7.16 dBi
- Peak Gain * (dBd)
- 5.06 dBd
- Peak F/B
- 23 dB
- Peak F/R
- 22 dB
- 2:1 SWR Bandwidth
- 175 kHz
- 1.5:1 SWR Bandwidth
- 125 kHz
- Max Element Length
- 47.5 ft
* Peak gain is shown in free space. dBd = dBi − 2.1
Mechanical
- Approx wt.
- 125 lbs
- Wind Area “C”
- 8.40 Sq Ft
- Wind Area “G”
- 15.12 Sq Ft
- Projected Area
- 12.6 Sq Ft
- Max Wind Speed
- 100 Mph
- Max Turning Radius
- 28.6 Ft
- Boom
- 2" OD / 0.125" wall
- Feedpoint
- Shunt coil match/50-Ohm
- Power
- 5KW Avg or Balun restricted
Patterns & SWR
Plots
Click any plot to open it full size.
** All pricing shown assumes the basic mounting hardware. Additional costs may apply for customized mast plates and hardware.