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21-869.fm Page 1 Wednesday, October 13, 1999 11:50 AM
10M Ham/CB Base Antenna
Your RadioShack 10M Ham/CB Base
Antenna provides excellent reception of
amateur radio, CB, and commercial radio
signals. The antenna can handle up to
2000 watts of transmit power.
Your antenna's features include:
Electrical Half-Wave Design — pro-
vides high gain.
Note: To improve your antenna's gain,
you can connect an optional ground
plane kit (available through your local
RadioShack store) to your antenna.
Three Easy-to-Assemble Sections —
help you quickly and easily assemble the
antenna.
Dual Tuning Rings — help you quickly
set the antenna for optimum perfor-
mance over a wide range of frequencies.
Ultraviolet Inhibitor — the antenna's
UV-protected housing is made of impact-
resistant fiberglass, making the exterior
resistant to weathering and color change.
Strong Internal Construction — pre-
vents the antenna's internal wires from
rattling, for maximum strength.
RadioShack is a registered trademark used by Tandy Corporation.
IMPORTANT SAFETY
PRECAUTIONS
Many do-it-yourself and professional an-
tenna installers are injured or killed each
year by 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:
• Be sure to select an antenna site
well away from all overhead wires.
• Do not try to guess which overhead
wires carry high voltage. Check with
the power company.
• If you notice anything making con-
tact with the overhead wires, call the
power company to have it removed.
• Do not run the antenna's cable over
power wires.
• Get help from a qualified profes-
sional when removing the old
antenna, especially if you have any
doubt
wires.
• Never install an antenna by your-
self. Be sure to have at least two
people available for help.
• Never install an antenna on a windy
day.
© 1999 Tandy Corporation.
All Rights Reserved.
21-869
Cat. No.
about
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overhead
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Related Manuals for Radio Shack 10M
Summary of Contents for Radio Shack 10M
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Page 1: Important Safety Precautions
21-869.fm Page 1 Wednesday, October 13, 1999 11:50 AM 10M Ham/CB Base Antenna Your RadioShack 10M Ham/CB Base Antenna provides excellent reception of amateur radio, CB, and commercial radio signals. The antenna can handle up to 2000 watts of transmit power. -
Page 2: Before You Begin
21-869.fm Page 2 Wednesday, October 13, 1999 11:50 AM 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. - Page 3 21-869.fm Page 3 Wednesday, October 13, 1999 11:50 AM PREPARATION Pre-Tuning the Antenna Your antenna is preset to use 27.205 MHz (the middle of the CB band) for the lowest SWR. If you are using your anten- na with a CB radio, you do not have to pre-tune it.
- Page 4 21-869.fm Page 4 Wednesday, October 13, 1999 11:50 AM Follow these steps to assemble and mount the antenna. 1. Lay the antenna’s components on the ground in a flat, open area. 2. Place the supplied of the top element (1). 3.
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Page 5: Tuning The Antenna
21-869.fm Page 5 Wednesday, October 13, 1999 11:50 AM TUNING THE ANTENNA If you are using your antenna at frequen- cies in the range of 25 to 30 MHz, you can tune the antenna using an standing- wave ratio (SWR) meter (not supplied) and the dual tuning rings on the bottom element. -
Page 6: Troubleshooting
21-869.fm Page 6 Wednesday, October 13, 1999 11:50 AM 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 SWR reading is too Depending on the frequency you high or cannot be set. -
Page 7: Specifications
21-869.fm Page 7 Wednesday, October 13, 1999 11:50 AM SPECIFICATIONS Reception ... VHF and UHF (Pre-tuned for 27.205 MHz) Half-Wave Gain ... 9.9 dBi Optimum SWR Range ... Less than 1.5:1 Height (assembled) ... 17.5 feet (5.3 m) Maximum Diameter ... 1.8 inches 34 mm.) Weight ... - Page 8 21-869.fm Page 8 Wednesday, October 13, 1999 11:50 AM Limited Ninety-Day Warranty This product is warranted by RadioShack against manufacturing defects in material and workman- ship under normal use for ninety (90) days from the date of purchase from RadioShack company- owned stores and authorized RadioShack franchisees and dealers.