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JK402T    2 Elements on 40M / 22 Foot Boom

 

The JK402T is a 22Ft boom 2 element 40m Yagi that has excellent gain and F/R.  The elements are loaded Capacitively which shortens the overall length while still maintaining a good gain, F/R across the 40M band.

 

This antenna is made for the DX'er or Contester that is looking for an antenna to work across the globe.

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.

 

This 40M Yagi has a great performance bandwidth all the way at the CW portion of the band, where the Max performance of this antenna is achieved. It then extends all way in to the upper SSB portion without significant degradation in performance.

Price : US$1,795.00 **

Approx wt. = 125 lbs

Wind Area "C" = 6.2 Sq Ft

                "G" = 11.16 Sq Ft

Projected Area = 9.3 Sq Ft

Max Wind Speed = 100 Mph

Max Turning Radius = 28 Ft

Boom = 2" OD / 0.125" Wall

Feedpoint = 50-Ohms

Power = 5KW Avg or Balun restricted

Enjoy 6+ dbi of Freespace Peak gain or

 

11+ dbi of Peak gain at 70ft above Avg. ground !!!

70 feet above Ground PLOTS - Single Antenna

*** Gain above ground are NEC4 modeled numbers over Average/Flat ground ***

Peak Gain is shown over a dipole in Freespace
Dipole in Freespace = 2.14dBi

 

40M

Number Elements

2

Active Boom Length

21.5 ft

Peak Gain*

4.1dBd / 6.2dbi

Peak F/B

20 dB

Peak F/R

18 dB

2:1 SWR Bandwidth

300 KHz

1.5:1 SWR Bandwidth

275 KHz

Max Element Length

57 ft

70 feet above Ground PLOTS - Single Antenna

*** Gain above ground are NEC4 modeled numbers over Average/Flat ground ***

** All pricing shown assumes the basic mounting hardware. Additional costs may apply for customized mast plates and hardware.

The next generation in design, quality and manufacturing

 

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