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JK3040Sr 4 Elements on 40M /3 Elements on 30M / 36 Foot Boom
The JK3040Sr is the combination of the JK404C & the JK303 on the same boom with 2 independent feed-points.
This antenna is made for the DX'er that ís looking for an antenna to work across the globe on 30M & 40M.
The Key feature of this antenna is that it can be mounted above or below Tribanders or other monobanders without any interaction.
It is made with very high quality materials and the best in its class in the market in terms of mechanical construction and electrical performance.
Price : US$5,495.00 **
Peak Gain is shown over a dipole in Freespace
Dipole in Freespace = 2.14dBi
Approx wt. = 215 lbs
Wind Area "C" = 16.1 Sq Ft
"G" = 28.9 Sq Ft
Projected Area = 24.15 Sq Ft
Max Wind Speed = 100 Mph
Max Turning Radius = 31.25 Ft
Boom = 2.5" OD
Feedpoint 40M = 50-ohm Direct
30M = Shunt Matched
Power = 5KW Avg or Balun restricted
|
40M |
Number Elements |
4 |
Active Boom Length |
35.5 ft |
Peak Gain* |
5.2dBd / 7.3dbi |
Peak F/B |
23 dB |
Peak F/R |
22 dB |
2:1 SWR Bandwidth |
265 KHz |
1.5:1 SWR Bandwidth |
210 KHz |
Max Element Length |
49.5 ft |
|
30M |
Number Elements |
3 |
Active Boom Length |
30 ft |
Peak Gain* |
5.6 dBd / 7.8dbi |
Peak F/B |
20+ dB |
Peak F/R |
18 dB |
2:1 SWR Bandwidth |
- |
1.5:1 SWR Bandwidth |
50 KHz |
Max Element Length |
32.4 ft |
40M Plot at 100Ft above average ground SSB
40M Plot at 100Ft above average ground CW
40M Plot - Freespace SSB
40M Plot - Freespace CW
30M Plot - Freespace
30M Plot at 100Ft above average ground
** All pricing shown assumes the basic mounting hardware. Additional costs may apply for customized mast plates and hardware.
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