background image

2

BEFORE YOU BEGIN

When deciding on an antenna’s location,
consider these points:

• The antenna should be as high as

possible on the building.

• The antenna and its cable should be

as far as possible from sources of
electrical noise such as appliances
or other radios.

• The antenna should be vertical for

the best performance.

Always use 50-ohm coaxial cable, such
as RG-58 or RG-8, to connect the anten-
na to your radio. For lengths over 50
feet, use RG-8 low-loss dielectric coaxial
cable. Your local RadioShack store car-
ries a wide variety of coaxial antenna ca-
ble and connectors.

Warning: When you install an outdoor
antenna, use extreme caution. If the
antenna starts to fall, let it go! It could
contact overhead power lines. If the
antenna touches the power line, con-
tact with the antenna, mast, cable, or
guy wires can cause electrocution and
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 next to power

cables or other antenna cables.

Coaxial Cable Installation 
Precautions

• Do not install coaxial cable where it

will have a pulling tension of greater
than 50 pounds. Leave no tension
on the cable after installing it.

• Use only round-headed staples.

Any clamps or securing devices
used with coaxial cable should grip
the cable evenly about the circum-
ference without crushing the cable.
Flat staples can damage coaxial
cable.

• Do not expose coaxial cable to a

temperature greater than 176°F
(80°C). Keep the cable away from
heating vents and water heaters.

• Do not install coaxial cable where it

will be crushed, stuffed, wedged, or
pinched.

• The cable’s jacket withstands most

outdoor environments. However,
you must seal connections and
splices to prevent moisture from
entering them.

21-869.fm  Page 2  Wednesday, October 13, 1999  11:50 AM

Summary of Contents for 10M

Page 1: ...electric 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 as touching the wires with your bare hand Contacting an electrical wire almost always results in a very serious shock To avoid electric shock please read and follow these important safety precautions...

Page 2: ...and 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 next to power cables or other antenna cables Coaxial Cable Installation Precautions Do not install coaxial cable where it will have a pulling tension of greater than 50 pounds Leave no tension on the ca...

Page 3: ...re 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 to their low est position Note If you trim too much off of the top element or use the antenna for a differ ent frequency later you can order a re placement top element from your local RadioShack sto...

Page 4: ...Hold 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 of the U bolts then use the supplied lock washers 8 and hex nuts 9 to secure it Caution To avoid damaging the bottom element do not over tighten the hex nuts 8 Connect one end of the coaxial cable n...

Page 5: ...y 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 until you reach the desired SWR 4 Using an SWR meter check the SWR at the top and bottom of the band If the SWR is higher at the top of the band than at the bottom raise both tuning rings counterclockwis...

Page 6: ...e 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 you...

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 subject to change and improvement without notice 21 869 fm Page 7 Wednesday October 13 1999 11 50 AM ...

Page 8: ...ng 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 defect by product repair without charge for parts and labor b replace the product with one of the same or similar design or c refund the purchase price All replaced parts and products and products on...

Reviews: