JK404C
- 4 Elements on 40M
- 36 Foot Boom
Dual Driven
The JK404C is a great contest antenna on a 36ft boom for 40m. This antenna has excellent F/R and gain while maintaining a flat SWR bandwidth. The antenna is made with our high quality, heavy duty materials and hardware. The element construction does not need trussing.
The Elements are Hi-Q coil loaded & Dual Driven. This provides a very good bandwidth and maintains steady gain and F/R pattern.
The goal in developing this antenna was to provide the contesters a 40M loaded Monobander that would provide a flat swr without degrading performance.
The Key feature of this antenna is that it can be mounted above or below Tribanders or other monobanders without any interaction.
We ship this antenna worldwide by UPS expedited and within the USA by UPS Ground. An Average shipping cost from CT to CA is approx $150 for this antenna.
JK404C spec sheet
| 40M | |
|---|---|
| Number Elements | 4 |
| Active Boom Length | 35.5 ft |
| Peak Gain * (dBi) | 7.36 dBi |
| Peak Gain * (dBd) | 5.26 dBd |
| Peak F/B | 23 dB |
| Peak F/R | 22 dB |
| 2:1 SWR Bandwidth | 275 kHz |
| 1.5:1 SWR Bandwidth | 225 kHz |
| Max Element Length | 49.5 ft |
Tap a band or swipe the cards →
40M
- Number Elements
- 4
- Active Boom Length
- 35.5 ft
- Peak Gain * (dBi)
- 7.36 dBi
- Peak Gain * (dBd)
- 5.26 dBd
- Peak F/B
- 23 dB
- Peak F/R
- 22 dB
- 2:1 SWR Bandwidth
- 275 kHz
- 1.5:1 SWR Bandwidth
- 225 kHz
- Max Element Length
- 49.5 ft
* Peak gain is shown in free space. dBd = dBi − 2.1
*** Gain above ground figures are modeled over average/flat ground ***
Mechanical
- Approx wt.
- 160 lbs
- Wind Area “C”
- 11.20 Sq Ft
- Wind Area “G”
- 20.16 Sq Ft
- Projected Area
- 16.8 Sq Ft
- Max Wind Speed
- 100 Mph
- Max Turning Radius
- 31.25 Ft
- Boom
- 2.5" OD / 0.125" wall
- Feedpoint
- 50-Ohm Direct
- Power
- 5KW Avg or Balun restricted
Plots
*** Gain above ground figures are modeled over average/flat ground ***
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.