SIRIO 827 Omni Directional CB Antenna Instructions
- June 3, 2024
- SIRIO
Table of Contents
SIRIO 827 Omni Directional CB Antenna Instructions
SAFETY INFORMATION SHEET
WARNING
INSTALLATION OF THIS PRODUCT NEAR POWER LINES IS DANGEROUS. FOR YOUR SAFETY, FOLLOW THE ENCLOSED INSTALLATION DIRECTIONS.
HOW TO INSTALL YOUR OUTDOOR ANTENNA SAFELY IN ACCORDANCE WITH THE RECOMMENDATIONS OF THE U.S. CONSUMER PRODUCT SAFETY COMMISSION
These safety recommendations apply to all SIRIO commercial, amateur and general purpose communication antennas. SIRIO antenne assumes no liability if faulty or dangerous installation practices are used. There are available, trained and experienced personnel to assist in installation, maintenance, or disassembly. Contact your local installer if consultation or assistance is required.
YOU, YOUR ANTENNA, AND SAFETY
Each year hundreds of people are killed, mutilated or receive severe permanent injuries when attempting to install an antenna. In many of these cases, the victim was aware of the danger of electrocution, but did not take adequate steps to avoid the hazard.
For your safety, and to help you achieve a good installation, please READ and FOLLOW the safety precautions below. THEY MAY SAVE YOUR LIFE!
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If you are installing an antenna for the first time, please, for your own safety as well as others, seek PROFESSIONAL ASSISTANCE. Consult your dealer. He can explain which mounting method to use for the size and type antenna you are about to install.
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Select your Installation site with safety, as well as performance, in mind. (Detailed information on Site Selection appears in a separate section of this booklet.) REMEMBER : ELECTRIC POWER LINES AND PHONE LINES LOOK ALIKE. FOR YOUR SAFETY, ASSUME THATANYOVERHEAD LINES CAN KILLYOU.
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Call your electric power company. Tell them your plans and ask them to come look at your proposed installation. This is a small inconvenience considering YOUR LIFE IS AT STAKE.
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Plan your installation procedure carefully and completely before you begin. Successful raising of a mast or tower is largely a matter of coordination. Each person should be assigned to a specific task, and should know what to do and when to do it. One person should be designated as the “boss” of the operation to call out instructions and watch for signs of trouble.
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When installing your antenna, REMEMBER :
DO NOT use a metal ladder. DO NOT work on a wet or windy day DO dress properly -shoes with rubber soles and heels, rubber gloves, long sleeve shirt or jacket. -
lf the assembly starts to drop, get away from it and let it fall. Remember, the antenna, mast, cable and metal guy wires are all excellent conductors of electrical current. Even the slightest touch of any of these parts to a power line complete an electrical path through the antenna and the installer- THAT’S YOU!
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If any part of the antenna system should come in contact with a power
line- DON’T TOUCH IT OR TRY TO REMOVE IT YOUR SELF. CALL YOUR LOCALPOWER COMPANY. They will remove it safely.
If an accident should occur with the power lines call for qualified emergency help immediately
SITE SELECTION
Before attempting to install your antenna, think where you can best place your antenna for safety and performance.
To determine a safe distance from wires, power lines and trees:
- Measure the height of your antenna.
- Add this length to the length of your tower or mast, and then
- Double this total for the minimum recommended safe distance.
If you are unable to maintain this safe distance, STOP! GET PROFESSIONAL HELP. Many antennas are supported by pipe masts attached to the chimney, roof or side of the house. Generally, the higher the antenna is above the ground, the better it performs. Good practice is to install your antenna about 5 to 10 feet above the roof line and away from power lines and obstructions. Remember that FCC limits your antenna height to 60 feet. If possible, find a mounting place directly above your set, where the antenna wire can take a short, vertical drop on the outside of the house for entry through a wall or window near the set. Your dealer carries a complete line of installation hardware.
CHOOSE A PROPER SUPPORT AND MOUNTING METHOD
However you decide to mount and support your antenna always make sure that safety is your first concern. Some of the more common installation methods are illustrated below.
ROOF MOUNTED
ROOF MOUNTING
The swivel feature of “universal” type mounting brackets makes a convenient antenna mount for flat or peaked roofs. One clamp type bracket is used with 3 or 4 guy wires equally spaced around the mast and anchored to the roof or eaves by eyebolts. Apply roofing compound around the base of the bracket, screws and eyebolts for moisture sealing.
TELESCOPING MAST
Guy wires should be equally spaced in at least three directions. Use at least three guy wires for each 10 foot section of mast.
SIDE OF HOUSE MOUNTING
The safe distance from power lines is at least twice the height of antenna and mast combined. Where roof overhang is not excessive, the side of the house provides a convenient mounting. Position the brackets over a stud if possible, one above the other, and space two or three feet apart. For metal siding, first mark mounting holes, then drill pilot holes through the siding to accept mounting screws.
TOWER
Tower safety is paramount to a good installation and requires that you take location, tree growth, soil depth and proximity to buildings into consideration. Tower foundations must be securely based on a solid concrete/ tower mounting plate. An alternative is to sink a 4-6 foot section of tower into a concrete base for an extremely rugged mount. Proper guying is essential to a safe weatherresistant installation that must handle severe wind loading and is best accomplished with preformed guy grips, torque brackets and turnbuckles. When working on towers always use a safety belt made of high quality web-type material
CHIMNEY MOUNTING
The chimney is often an easy and convenient mounting place. But the chimney must be strong enough to support the antenna in high winds. Do not use a chimney that has loose bricks or mortar. A good chimney mount makes use of a 5 or 10 foot, 1-1/4″ diameter steel mast, and a heavy duty two strap clamp-type bracket. Install the upper bracket just below the top course of bricks, and the lower bracket two or three feet below the upper bracket. For maximum strength, space the brackets as lar apart as possible.
GENERAL INSTALLATION INSTRUCTIONS FOR MAST MOUNTED ANTENNAS
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Assemble your new antenna on the ground at the installation site. Keep separate assembly instructions that come with it. Large CB and Amateur beams may have to be finally assembled on the tower or mast.
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On the ground, clamp the antenna to mast and connect the coaxial cable to the antenna.
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To insure that the mast does not fall the “wrong way” if it should get away during the installation or takedown, durable non-conductive rope should be secured at each two foot level as the mast is raised. The boss stands in a position where he can yank or pull the ropes if the need arise to deflect the falling mast away from hazards (such as power lines) into a “safe fall” (such as a yard or driveway). The ropes are tied taut at the base of the mast after installation and in place at the various levels.
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Install selected mounting bracket.
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If you are going to use guy wire installation instead of a mounting bracket:
– install guy anchor bolts
– estimate length of guy wire and cut
– attach a mast using guy ring -
Carefully take antenna and mast assembly to mounting bracket and insert. Tighten camp bolts. In case of guyed installation, it will be necessary to have at least a second person hold the mast upright while the guy wires are attached and tightened to the anchor bolts.
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Install self-adhering “ DANGER ” label packaged in antenna hardware kit at eye level on your mast.
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Install ground rod to drain off static electricity build-up and connect ground wire to mast and ground rod. Use special ground rods, not a spare piece of pipe.
EXAMPLE OF ANTENNAGROUNDING AS PER NATIONALELECTRICAL CODE INSTRUCTIONS
- Use No. 10 AWG copper or No. 8 AWG or larger copper-clad steel or bronze wire, as ground wires for both mast and lead-in. Securely clamp the wire to the bottom of the mast.
- Secure lead-in wire from antenna to antenna discharge unit and mast ground wire to house with stand-off insulators spaced from 4 feet (1.2 meters) to 6 feet (1.8 meters) apart.
- Mount antenna discharge unit as close as possible to where the lead-in wire enters the house.
- Drill a hole in wall (CAREFUL! There are wires in that wall.) near your set just large enough to permit entry of cable.
- Push cable through hole and form a rain drip loop close to where it enters the house.
- Put small amount of caulking around cable where it enters house to keep out drafts.
- Install static electricity discharge unit.
- Connect antenna cable to the set.
You should not attempt to raise a mast in excess of 30 feet in height/length (not including the antenna proper) in a fully extended condition. Thirty to fifty foot tubular masts must be elevated , a section at a time, with the base or outer section secured in place with guy wires. GET PROFESSIONALHELP.
All articles displaying this symbol on the body, packaging or instruction manual of same, must not be thrown away into normal disposal bins but brought to specialised waste disposal centres. Here, the various materials will be divided by characteristics and recycles, thus making an important contribution to environmental protection.
SIRIO 827
26.4…28.4 MHz Tunable Base Station Antenna
DESCRIPTION
The most modern technology and the most advanced instruments have been used for the realization of SIRIO 827, the new base antenna with remarkable characteristics. It is made of Silicium Magnesium Aluminium tubes of big dimensions drawn and cemented on the surface to get the maximum strenght of the main whip. The coil, made of enamelled copper wire of big section, has been specially planned in order to bear high powers. It adopts the exclusive system C.A.C.S. (Coil Auto-Cooling System) which allows the auto-cooling by a finned support that keeps the coil hanging up allowing the air circulation.
SPECIFICATIONS
Electrical Data
Mechanical Data
TYPICAL S.W.R. RESPONSE
OPTIONAL ANTI NOISE NYLON RING
Optional nylon ring to reduce the wind noise of the radials.
P/N: 2511011.00
MOUNTING INSTRUCTIONS
HI-QUALITY ANTENNAS MADE IN ITALY
© Copyright SIRIO antenne – Technical Data are subjected to change – Printed in ITALY – Rev. 08/09/2011 – Cod. ID082
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