Radio Shack TV • FM High Gain Mast-Mount Antenna UHF/VHF/FM Amplifier with Switchable FM Trap, 15-1109 User Manual
CAUTION
15-110 9.fm Page 1 Thursday, July 15, 1999 10:41 AM
Cat. No.
15-1109
TV • FM High Gain Mast-Mount Antenna UHF/VHF/FM
Amplifier with Switchable FM Trap
This amplifier with Switchable FM Trap
provides up to 30 dB amplification of
signals from outdoor VHF, UHF, FM,
or combination antennas. This high
degree of amplification is necessary
when your antenna is pulling in signals
from weak or distant stations, when it
is positioned 100 feet or more from the
TV, or when a single antenna supplies
signals to several units — TVs, VCRs,
or FM receivers.
Note:
This unit only amplifies signals;
it does not enhance distorted o r noisy
signals.
FEATURES
Special Automatic Protection Circuit
— guards against cable shorts
and prevents damage to connected receivers.
Surface-Mounted Components
—
assure long-term reliability.
Please read and keep all of the in-
structions and warnings contained in
this Owner’s Manual, in the supplied
“Safety Instructions” sheet, and on the
product.
Warning:
To prevent fire or shock
hazard, do not expose this power
supply to rain or moisture.
Separate Amplifier and Power Supply Units
— maximize operational effi-
ciency.
Built-In Adjustable Gain Control
—
reduces signals by up to 10 dB to prevent overload and allow custom
matching of amplification to signal
strength.
Switchable FM Trap
— reduces or
eliminates FM interf erence, which appears as a herringbone p attern on the
TV screen.
Power Indicator
— lights when the
amplifier is operating, and goes out if
power fails or the connecting cable
shorts.
© 1997 Tandy Corporation.
RadioShack is a registered trademark used by Tandy Corporation.
All Rights Reserved.
RISK OF ELECTRIC SHOCK.
DO NOT OPEN.
CAUTION
ELECTRIC SHOCK, DO NOT REMOVE
COVER OR BACK. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
!
: TO REDUCE THE RISK OF
This sy mbo l is in tend ed t o al ert yo u
to the prese nce of un insula ted dangerous voltage within the product’s
enclos ure t hat migh t be of su ffi cien t
magnitude to constitute a risk of
electric shock. Do not open the product’s case.
This symbol is intended to inform
you that important operating and
maintenance instructions are included in the literature accompanying
this product.
!
15-110 9.fm Page 2 Thursday, July 15, 1999 10:41 AM
INSTALLATION
Cautions:
• For outdoor antennas, install an
antenna grounding system, as
shown in the supplied sheet.
• The power supply has a protection
circuit that shuts down the amplifier if there are stray wires
between the power supply and the
amplifier. If the amplifier does not
operate, check for stray wires.
Proper operation should resume
when the problem is corrected.
Installing the Amplifier
Antenna Terminals
Matching
Transformer
Amplifier
Weather
Boots
Standoff
Drip
Loop
Attach the other end o f this cable
to the antenna’s terminals, using
the supplied 300-to-75 ohm
matching transformer if necessary.
Notes:
• Be sure to fully seat the weather
boots provided on the coaxial
cable over their corresponding
F-connectors.
• Leave a slight amount of slack
(called a drip loop) where the
cable attaches to the amplifier.
3. Choose a length of cable long
enough to reach f rom the antenna
to your TV or receiver. RadioShack stores have v arious precut lengths of cable with boots and
connectors in place. If you c hoose
to assemble your own coaxial
cable, use the supplied weatherboot at the amplifier’s connections.
1. Mount the amplifier on the
antenna mast, about 12 inches
below the antenna. Position the Ubolt and mounting bracket as
shown. Then install washers and
tighten the nuts securely.
2. Attach one end of the provided
coaxial cable to the amplifier’s Fconnector labeled
Standoff
TO ANTENNA
.
2
15-110 9.fm Page 3 Thursday, July 15, 1999 10:41 AM
Attach one end of a 75-ohm coaxial cable to the amplifier’s F-connector labeled
Do not splice the cable or
Note:
TO POWER SUPPL Y
install any in-line dev ices such as
splitters or filters. You can install a
grounding block (Cat. No. 15-909),
which dissipates DC current and
provides a connection point for a
static discharge ground rod.
4. Use either standoffs or weatherresistant electrical tape to secure
the cable to the antenna mast.
Use standoffs to secure the cable
to the building as you route the
cable to your TV.
Notes:
• If you use a power rotator for
your antenna, leave enough
cable slack for unrestrained
rotation of the upper section.
Installing the Power Supply
.
Notes:
• The power supply is designed for
indoor use only.
• Do not moun t the unit t o any electrical equipment or your TV set.
Choose a location for the power
supply near the TV or FM receiver,
and close to a standard AC outlet.
1. Drill a h ole at the desired lo cation
and thread the supplied sc rew into
the hole until its head extends
1
about
/8 inch from the wall.
2. Align the power supply’s keyhole
slot with the screw head and slide
the power supply down.
• Leave a slight amount of slack
(called a drip loop) where the
cable enters your house.
• Be sure to weatherproof all connections, using plastic electrical
tape or a coaxial sealant.
3. Connect the coaxial cable from the
amplifier to the power supply’s
FROM A MP LIF IER
terminal. Do not
overtighten the connector.
4. Connect one end of a short length
of cable to the power supply’s
terminal.
TV
3
TO
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