Call us at: +1 845 228 8700

 

The JK Mid-Tri (Tribander) has been designed for Hams looking for a Mid level, cost effective but high quality Tribander antenna.

 

This TriBander elements follow the same taper schedules and element construction as the Navassa5 antenna.

 

This antenna is very specifically priced and marketed to the segment of the Ham community that wants to put up a Yagi with  an outstanding signal and the best quality mechanical build in the marketplace.

 

We have specifically focused on the mounting position of this  Mid-Tri Yagi to enable stacking of this antenna on the side of a tower. A good 3ft spacing between the elements gives the side-mounting option on most towers available in the market today.

 

If you also need 40M, check out the JK Mid-Tri-40 !! The 40M band has its own feedpoint which enables you to stack a

JK Mid-Tri-40 on the top with a JK Mid-Tri on the bottom in a stack (see stack plots below).

 

The antennas have excellent Gain, F/R and SWR characteristics and is manufactured the same way as our larger Yagis with the same high quality materials and hardware.

 

 

JK Mid-Tri    3 Elements on 20M / 4 Elements on 15M / 5 Elements on 10M / 24 Foot Boom

JK Mid-Tri-40  2 Elements on 40M / 3 Elements on 20M/ 4 Elements on 15M / 5 Elements on 10M / 26 Foot Boom

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

Price : US$1,495.00 **

JK Mid-Tri

JK Mid-Tri

 

Approx wt. = 98 lbs

Wind Area = 10.6 Sq. Ft

Max Wind Speed = 100 Mph

Max Turning Radius = 22 Ft

Feedpoint = Direct 50-Ohm

 

 

JK Mid-Tri-40

 

Approx wt. = 163 lbs

Wind Area = 16.5 Sq. Ft

Max Wind Speed = 100 Mph

Max Turning Radius = 27.7 Ft

Feedpoint = Dual Feed

20/15/10 = Direct 50-Ohm

40M = 50-Ohm Shunt Match

 

Price : US$2,695.00 **

** Free UPS Ground shipping to lower 48 states **

BUY NOW

Click here for a PDF version of the MidTri40 manual

 

10M

15M

20M

40M

Number Elements

5

4

3

2

Active Boom Length

19.5 ft

20.3 ft

20.9 ft

19.25 ft

Peak Gain*

7.5 dBd/ 9.5 - 10+ dbi

6.9 dBd/ 9+ dbi

5.3 dBd/ 7.44 dbi

4.2 dBd/ 6.34dbi

Peak F/B

20+ dB

18+ dB

20+ dB

15 dB

Peak F/R

15+ dB

18+ dB

20+ dB

15+ dB

2:1 SWR Bandwidth

850 KHz

Less than 1.5:1 across the band

Less than 1.5:1 across the band

175 KHz

1.5:1 SWR Bandwidth

650 KHz

450 KHz

350 KHz

130 KHz

Max Element Length

18 ft

24.25 ft

36.5 ft

47.5 ft

Please click here for NEC4 Freespace Tabulated Gain, SWR values

FREESPACE PLOTS - Single Antenna

STACK Plots - spaced at 35Ft. (Freespace)

70 feet above Ground PLOTS - Single Antenna

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

JK MidTri-40 : NEC4 - Freespace Gain, SWR & F/B values

Freq

R

X

SWR

Gain

Azimuth Angle

F/B

F/R

28.000

44.50

-4.01

1.155

9.30

0

17.37

13.64

28.050

47.28

-3.88

1.102

9.43

0

17.73

13.82

28.100

49.53

-4.01

1.084

9.55

0

18.19

14.00

28.150

51.15

-4.27

1.091

9.67

0

18.78

14.21

28.200

52.05

-4.45

1.101

9.78

0

19.53

14.45

28.250

52.21

-4.31

1.099

9.89

0

20.51

14.74

28.300

51.69

-3.61

1.082

9.99

0

21.83

15.09

28.350

50.67

-2.10

1.045

10.07

0

23.65

15.50

28.400

49.38

0.37

1.015

10.14

0

26.32

16.01

28.450

48.12

3.90

1.092

10.19

0

30.46

16.62

28.500

47.23

8.44

1.200

10.19

0

34.74

17.31

28.550

47.07

13.80

1.336

10.14

0

30.01

18.06

28.600

48.02

19.48

1.487

10.00

0

24.97

18.77

28.650

50.15

24.44

1.621

9.74

0

21.57

19.31

28.700

52.41

26.91

1.685

9.31

0

19.20

19.20

28.750

50.57

25.99

1.668

9.05

0

17.46

17.46

 

Freq

R

X

SWR

Gain

Azimuth Angle

F/B

F/R

21.000

42.97

-9.06

1.280

8.56

0

20.00

20.00

21.025

43.70

-7.43

1.231

8.61

0

20.48

20.48

21.050

44.50

-5.82

1.185

8.65

0

20.81

20.81

21.075

45.38

-4.25

1.141

8.70

0

21.01

21.01

21.100

46.33

-2.74

1.100

8.75

0

21.04

21.04

21.125

47.33

-1.32

1.063

8.79

0

20.91

20.91

21.150

48.37

0.01

1.034

8.84

0

20.67

20.67

21.175

49.43

1.21

1.027

8.89

0

20.34

20.34

21.200

50.47

2.25

1.047

8.93

0

19.93

19.93

21.225

51.45

3.13

1.070

8.97

0

19.48

19.48

21.250

52.32

3.82

1.091

9.02

0

19.04

19.04

21.275

53.00

4.31

1.107

9.06

0

18.58

18.58

21.300

53.41

4.64

1.118

9.09

0

18.13

18.13

21.325

53.47

4.83

1.122

9.13

0

17.72

17.72

21.350

53.09

4.96

1.120

9.16

0

17.33

17.33

21.375

52.20

5.12

1.115

9.18

0

16.96

16.96

21.400

50.75

5.45

1.115

9.21

0

16.65

16.65

21.425

48.73

6.09

1.134

9.23

0

16.37

16.37

21.450

46.18

7.21

1.185

9.24

0

16.13

16.13

 

Freq

R

X

SWR

Gain

Azimuth Angle

F/B

F/R

14.000

39.77

-2.89

1.269

7.41

0

20.58

20.58

14.025

40.40

-1.71

1.242

7.41

0

21.15

21.15

14.050

41.01

-0.49

1.220

7.42

0

21.72

21.72

14.075

41.60

0.76

1.203

7.42

0

22.23

22.23

14.100

42.15

2.06

1.193

7.43

0

22.69

22.69

14.125

42.69

3.39

1.190

7.44

0

23.09

23.09

14.150

43.20

4.77

1.195

7.45

0

23.39

23.26

14.175

43.70

6.20

1.208

7.46

0

23.59

23.43

14.200

44.17

7.69

1.228

7.47

0

23.66

23.61

14.225

44.62

9.23

1.253

7.48

0

23.62

23.62

14.250

45.06

10.84

1.284

7.50

0

23.46

23.46

14.275

45.48

12.51

1.321

7.52

0

23.19

23.19

14.300

45.88

14.25

1.361

7.53

0

22.82

22.82

14.325

46.27

16.07

1.407

7.55

0

22.39

22.39

14.350

46.65

17.96

1.457

7.57

0

21.90

21.90

 

 

Freq

R

X

SWR

Gain

Azimuth Angle

F/B

F/R

7.070

91.52

-24.76

2.014

7.15

0

8.12

8.12

7.080

76.95

-20.25

1.711

7.08

0

9.04

9.04

7.090

66.71

-15.66

1.483

6.95

0

10.63

10.63

7.100

59.26

-11.56

1.312

6.80

0

12.20

12.20

7.110

53.64

-8.04

1.186

6.64

0

13.63

13.63

7.120

49.23

-5.08

1.109

6.49

0

14.72

14.72

7.130

45.66

-2.59

1.112

6.34

0

15.25

15.25

7.140

42.69

-0.49

1.172

6.20

0

15.15

15.15

7.150

40.14

1.29

1.248

6.06

0

14.62

14.62

7.160

37.91

2.82

1.329

5.93

0

13.84

13.84

7.170

35.92

4.14

1.412

5.80

0

12.99

12.99

7.180

34.11

5.30

1.496

5.68

0

12.18

12.18

7.190

32.45

6.34

1.583

5.57

0

11.43

11.43

7.200

30.91

7.28

1.672

5.47

0

10.74

10.74

7.210

29.47

8.14

1.764

5.37

0

10.12

10.12

7.220

28.12

8.95

1.860

5.27

0

9.57

9.57

7.230

26.85

9.70

1.959

5.19

0

9.06

9.06

7.240

25.65

10.42

2.062

5.11

0

8.61

8.61

7.250

24.51

11.11

2.170

5.02

0

8.20

8.20

 

** 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