14
Operating Your AT1500CV cont’d
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Notes
1. An SWR of 1:1 is best, but an
SWR as high as 2:1 may be acceptable.
Check your transmitter/amplifier man-
ual for details.
2. If you cannot get an acceptable
SWR, lengthen or shorten your an-
tenna and/or feedlines and retune.
3. If you get low SWR readings at
more than one setting, use the setting
that gives:
- highest FORWARD power reading
- lowest REFLECTED power reading
- uses the largest capacitance (highest
number) on the INPUT and AN-
TENNA controls.
4. Once every 4-6 months clean the
roller coil with 70% isopropyl alcohol
and a clean cotton cloth. Do not trans-
fer any of the conducting grease on the
rod that guides the roller wheel as this
will contaminate the windings on the
roller coil body.
5. Any time a new or different antenna
is connected, it is necessary to repeat
the tuning procedure for each antenna.
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Important Safeguards cont’d
3
14. Power Lines
—An outside antenna sys-
tem should not be located in the vicinity of
overhead power lines, other electric light or
power circuits, where it can fall into such
power lines or circuits. When installing an
outside antenna system, extreme care should
be taken to keep from touching such power
lines or circuits as contact with them may be
fatal.
15. Overloading
—Do not overload wall out-
lets and extension cords as this can result in a
risk of fire or electric shock.
16. Object and Liquid Entry
—Never push
objects of any kind into this product through
openings as they may touch dangerous volt-
age points or short-out parts that could result
in a fire or electric shock. Never spill liquid of
any kind on the product.
17. Servicing
—Do not attempt to service this
product yourself as opening or removing
covers may expose you to dangerous voltage
or other hazards. Refer all servicing to quali-
fied service personnel.
18. Damage Requiring Service
—Unplug this
product from the wall outlet and refer servicing
to qualified service personnel under the fol-
lowing conditions:
a.
When the power-supply cord or plug is
damaged.
b.
If liquid has been spilled, or objects have
fallen into the product.
c.
If the product has been exposed to rain or
water.
d.
If the product does not operate normally by
following the operating instructions. Adjust
only those controls that are covered by the
operating instructions. An improper adjust-
ment may result in damage and will often
require extensive work by a qualified
technician to restore the product to its normal
operation.
e.
If the product has been dropped or the
cabinet has been damaged.
f.
When the product exhibits a distinct change
in performance—this indicates a need for
service.
19. Replacement Parts
—when replacement
parts are required, be sure the service techni-
cian has used replacement parts specified by
the manufacturer or have the same character-
istics as the original parts. Unauthorized sub-
stitutes may result in fire, electric shock or
other hazards.
20. Safety Checks
—Upon completion of any
service or repairs to this product, ask the
service technician to perform safety checks to
determine that the product is in proper operat-
ing condition.
21. Outdoor Antenna Grounding
—Before
attempting to install this product, be sure the
antenna or cable system is grounded so as to
provide some protection against voltage
surges and built-up static charges.
a.
Use No.10 AWG copper, No.8AWG alumi-
num, No.17AWB copper-clad steel or bronze
wire or larger, as ground wire.
b.
Secure antenna lead-in and ground wires to
house with stand-off insulators spaced from 4
feet to 6 feet apart.
c.
Mount antenna discharge unit as close as
possible to where lead-in enters house.
d.
A driven rod may be used as the grounding
electrode where other types of electrode
systems do not exist. Refer to the National
Electric Code, ANSI/NFPA 70-1990 for infor-
mation.
e.
Use jumper wire not smaller than No.6
AWG copper or equivalent, when a separate
antenna grounding electrode is used.