Antenna Cutting Guide

APPROXIMATE WHIP LENGTHS

FOR 11 METERS ( CB )

CH

FREQ.

WILSON
1000/5000
BASE LOAD

TRUCKER
2000 & 5000
5" SHAFT

TRUCKER
2000 & 5000
10" SHAFT

1

26.965

62 ¾"

52 "

50 ½"

5

27.015

62 ¾"

51 ¾"

50 ¼"

10

27.075

62 ¼"

51 ½"

50 "

15

27.135

62 "

51 ¼"

49 ¾"

19

27.185

61 ¾"

51 "

49 ½"

25

27.245

61 ½"

50 ¾"

49 ¼"

30

27.305

61 ¼ "

50 ½"

49 "

35

27.355

61 "

50 ¼"

48 ¾"

40

27.405

60 ¾"

50 "

48 ½"

AMATEUR BAND (10MTR)

FREQ.

WILSON
1000/5000
BASE LOAD

TRUCKER
2000 & 5000
5" SHAFT

TRUCKER
2000 & 5000
10" SHAFT

28.000

58 ½"

48 "

46 ½"

28.250

57 ¾ "

47 ¼"

45 ½"

28.500

57 "

46 ½"

44 ¾"

28.750

56 ¼"

45 ¾"

43 ¾"

29.000

55 ½"

45 "

43 "

29.250

54 ¾"

44 ¼"

42 ¼"

29.500

53 "

43 ½"

41 ½"

29.750

52 ¼"

42 ¼"

40 ½"

 

Notes:

1.       Actual length for your installation may vary, due to differences in vehicles and grounding.

2.       Lengths listed above are for antenna whip only, measured from corona discharge tip to bottom of whip.

3.       Antenna mast allows an additional 1-¼" adjustment of antenna. This allows for correcting and adding length if whip is cut to short.

4.       To cut the stainless steel antenna whip, bolt cutters will easily do the job, however a standard hacksaw may also be used.

5.       For frequencies other than those listed above, use the following formula:

a.       468 ÷ F = ½W

b.      ½W ÷ 2 x 12 - C = Whip Length


WHERE: F = Frequency desired ; W = Wavelength ; C = Coil Factor
(Coil Factor : for W-1000 use : C=41.65 ; for Trucker 5" use: C=52.21 ; for Trucker 10" use C=53.84)

The lengths calculated will be an approximate starting point only. Trim for best SWR.