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6

TROUBLESHOOTING

If you have problems mounting or tuning your antenna, here are some suggestions that
might help. If you still have trouble, contact your local RadioShack store for assistance.

PROBLEM

POSSIBLE CAUSE

SOLUTION

SWR reading is too 
high or cannot be set.

Depending on the frequency you 
want to use it for, the antenna 
might be too long or too short.

Pre-tune the antenna (see “Pre-
Tuning the Antenna” on Page 3).

The antenna is not installed in a 
good location. 

Move the antenna to a different 
location and try again.

The coaxial cable might be broken 
or damaged.

Use another coaxial cable.

The coaxial cable might be coiled.

Uncoil the coaxial cable.

The SWR meter might be con-
nected incorrectly.

Make sure the SWR meter is con-
nected correctly to the antenna 
and your radio.

The antenna or radio might not be 
properly grounded.

Make sure the antenna and radio 
are properly grounded.

21-869.fm  Page 6  Wednesday, October 13, 1999  11:50 AM

Summary of Contents for 21-869

Page 1: ...lectric shock Many power wires are within 20 to 25 feet of the ground and could easily be touched by an assembled antenna or cable Touching the overhead wires with any part of the antenna is the same...

Page 2: ...nd death Call the power company to re move the antenna Do not attempt to remove it yourself Cautions Do not run the cable over sharp edges or moving parts that might damage it Do not run the cable nex...

Page 3: ...e the length you need to cut off of the top element then use a hacksaw to carefully cut the top element 4 Replace the cap on the top element 5 Set the tuning rings on the bottom element of the antenna...

Page 4: ...old the assembled antenna vertically next to the structure where you want to mount it then slide the supplied U bolts 6 over the antenna and the structure 7 Slide the supplied brackets 7 over the ends...

Page 5: ...3 If the center frequency is still too low follow the steps under Pre Tuning the Antenna on Page 3 to shorten the top element by 1 2 inch Then check the SWR again Keep shortening the top element unti...

Page 6: ...the antenna see Pre Tuning the Antenna on Page 3 The antenna is not installed in a good location Move the antenna to a different location and try again The coaxial cable might be broken or damaged Us...

Page 7: ...SWR Range Less than 1 5 1 Height assembled 17 5 feet 5 3 m Maximum Diameter 1 8 inches 34 mm Weight 4 lbs 15 oz 2 24 kg Specifications are typical individual units might vary Specifications are subjec...

Page 8: ...g the warranty period take the product and the RadioShack sales receipt as proof of purchase date to any RadioShack store RadioShack will at its option un less otherwise provided by law a correct the...

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