SAC "H" Helipad User manual

Box 5345 • Beaumont • Texas • 77726-5345 • USA • Phone [phone] • Fax [phone] • Email [email protected]
www.southernavionics.com
MANUFACTURERS OF LOW FREQUENCY RADIOBEACONS AND ASSOCIATED PRODUCTS
SOUTHERN AVIONICS COMPANY
“H” Helipad Antenna
Manual #SD400008 Revision E
Printed
August 22, 2008

Box 5345 • Beaumont • Texas • 77726-5345 • USA • Phone [phone] • Fax [phone] • Email [email protected]
www.southernavionics.com
MANUFACTURERS OF LOW FREQUENCY RADIOBEACONS AND ASSOCIATED PRODUCTS
SOUTHERN AVIONICS COMPANY
One-Year Limited Warranty
SOUTHERN AVIONICS COMPANY (hereinafter called COMPANY) warrants to the original
purchaser for a period of one year from the date of delivery to the original purchaser, that the
goods sold pursuant to this COMPANY invoice were at the time of the delivery, free from defects
resulting from faulty material or workmanship. THIS LIMITED WARRANTY IS IN LIEU OF ALL
OTHER REPRESENTATIONS AND EXPRESS WARRANTIES. This warranty is made for the
benefit of the initial purchaser only and is not made for the benefit of any party other than initial
purchaser. It applies only if the goods are submitted to normal use and service and does
not apply if the goods are misused or mismatched with other goods such as antennas,
couplers, or any other third party goods that have not been approved by SAC in writing for
use with SAC equipment.
ALL IMPLIED WARRANTIES EXISTING UNDER THE LAW ARE HEREBY EXPRESSLY
NEGATED; PARTICULARLY, COMPANY HEREBY NEGATES AND DISCLAIMS THE IMPLIED
WARRANTY OF MERCHANTABILITY AND IMPLIED WARRANTY OF FITNESS FOR A
PARTICULAR PURPOSE.
If Purchaser believes that these goods do not comply with the express warranty stated above or
any existing and applicable implied warranty which under the law cannot be disclaimed or
negated as provided above, then purchaser may request the COMPANY inspect such goods by
mailing, within sixty (60) days after purchaser knows or should have known that the goods
allegedly do not conform with the warranty, postage prepaid, to COMPANY, P.O. Box 5345, 5000
Belmont, Beaumont, Texas, 77726 Attention: President, a writing specifying (a) purchaser's
name, address, and telephone number, (b) date of purchase, (c) COMPANY distributor or
location from which the goods were purchased, (d) location of the goods in question (or include
the goods in question with the notice), and (e) brief description of the alleged nonconformity with
the warranty. If the goods are covered by, and do not conform with, the warranty, COMPANY will
repair or replace F.O.B. point of manufacture any such goods; but in no event will COMPANY be
obligated or required to remove the non-conforming goods from their place of installation or to
install the replacement goods. All replacement goods are warranted to the extent provided herein
for the remaining term of this warranty.
In the event purchaser chooses to commence an action for breach of warranty or breach of
contract arising out of the sale of the goods pursuant to this invoice, the purchaser must
commence such action within one year after the course of action accrues.
THE REMEDY PROVIDED HEREIN SHALL BE THE SOLE AND EXCLUSIVE REMEDY FOR
BREACH OF THIS WARRANTY, FOR ANY BREACH OF ANY IMPLIED WARRANTY EXISTING
AND APPLICABLE UNDER THE LAW (TO THE EXTENT THAT ANY SUCH WARRANTY HAS
NOT BEEN SUCCESSFULLY NEGATED AND DISCLAIMED HEREINABOVE), AND FOR ANY
ACT OF NEGLIGENCE OR ANY OTHER TORTIOUS ACT COMMITTED BY COMPANY, AND
IN NO EVENT SHALL THE COMPANY BE LIABLE TO PURCHASER OR ANY THIRD PARTY
FOR ANY INCIDENTAL, CONSEQUENTIAL OR SPECIAL DAMAGES RESULTING FROM ANY
DEFECT IN THE GOODS OR ANY FAILURE OF THE GOODS TO CONFORM WITH THIS
WARRANTY OR ANY IMPLIED WARRANTY EXISTING AND APPLICABLE UNDER THE LAW
(TO THE EXTENT THAT ANY SUCH IMPLIED WARRANTY HAS NOT BEEN SUCCESSFULLY
NEGATED AND DISCLAIMED HEREINABOVE.)

Box 5345 • Beaumont • Texas • 77726-5345 • USA • Phone [phone] • Fax [phone] • Email [email protected]
www.southernavionics.com
MANUFACTURERS OF LOW FREQUENCY RADIOBEACONS AND ASSOCIATED PRODUCTS
SOUTHERN AVIONICS COMPANY
Repair Policy
Repair Rate: One Hundred Twenty ($120) Dollars per hour plus Parts.
Minimum Repair Cost: One Hundred Twenty ($120) Dollars.
Maximum Repair Cost: Seventy-five (75) percent of the price for a new or reconditioned item or
its direct replacement. If an item sent to SAC for Repair is determined to be non-repairable and is
replaced by a new or reconditioned item, the Customer is not charged for any costs incurred in
time and materials spent in efforts to repair that particular non-repairable item. The Customer will
only be charged the price of the replacement item. All non-repairable items are returned to the
Customer. However if the Customer does not purchase a new or reconditioned item to replace
that particular non-repairable item the Minimum Repair Cost is applied.
Turnaround Time: Southern Avionics Company's standard Turnaround Time is 45 days.
Customers that request the Repair be processed in less than 45 days will be charged an
Expediting Fee of Thirty ($30) Dollars per hour in addition to the standard Repair Rate.
RMA (Return Material Authorization): Southern Avionics Company requires all items submitted
to our factory for Repair must be accompanied by a Return Merchandise Authorization (RMA)
Number. Please make a RMA request before returning items to Southern Avionics Company.
This is the best way to communicate with us and ensure that your needs are taken care of. A
RMA Number may be obtained by contacting Angela Flores, Sales Administrator either by
telephone at 409-842-1717, extension 111 or by e-mail at [email protected].
Rejection: Southern Avionics Company reserves the right to refuse repair of any items that SAC
deems to be non-repairable to our factory standards. Pads lifted from circuit boards or burnt
circuit boards are examples of grounds for rejection.
Freight Costs: The Customer pays for freight costs to and from Southern Avionics Company.
SAC will not be responsible for any loss or damage of any items in transit either to or from SAC.
Expiration of Support: SAC supports all items manufactured by SAC for no less than ten (10)
years from date of original purchase. SAC will not repair any items that are older than ten (10)
years old. Any items sent to SAC for repair that are more than ten (10) years old will be returned
to the sender freight collect to the return address provided unless otherwise specified in writing
prior to the receipt of the returned item by SAC.
Serial Numbers: Southern Avionics Company will not repair any items that are not accompanied
by the Serial Numbers of the finished goods associated with the items.
Estimates: SAC will not provide any estimates of costs other than the costs outlined above.
Warranty: Repairs are guaranteed for 90 days after shipment. Warranty applies only to Repairs
made and does not cover subsequent equipment failures not associated with the previous
Repair.

Box 5345 • Beaumont • Texas • 77726-5345 • USA • Phone [phone] • Fax [phone] • Email [email protected]
www.southernavionics.com
MANUFACTURERS OF LOW FREQUENCY RADIOBEACONS AND ASSOCIATED PRODUCTS
SOUTHERN AVIONICS COMPANY

SOUTHERN AVIONICS COMPANY
Monitor Receiver 1Contents
Contents
1 Introduction ............................................................................................................. 1-1
2 Planning................................................................................................................... 2-1
3 Installation ............................................................................................................... 3-1
4 Tune Up.................................................................................................................... 4-1
5 Preventive Maintenance ......................................................................................... 5-1
6 Parts List.................................................................................................................. 6-1

SOUTHERN AVIONICS COMPANY
PC 1000C/22 Figures
Figures
Figure 2-1 SQUARE HELIPAD WITH END FED ANTENNA WIRE ............................. 2-3
Figure 2-2 SQUARE HELIPAD WITH CENTER FED ANTENNA WIRE ...................... 2-3
Figure 2-3 HELIPAD OVERHANGING A PLATFORM WITH AN END FED ANTENNA
WIRE............................................................................................................................. 2-4
Figure 2-4 OCTAGON HELIPAD WITH END FED ANTENNA WIRE .......................... 2-4
Figure 2-5 COUPLER INSTALLATION ON OFFSHORE PLATFORM GUARDRAILS 2-5
Figure 2-6 FINAL TIGHENING OF BANDS .................................................................. 2-6
Figure 3-1. BUSHING INSTALLATION........................................................................ 3-3
Figure 3-2. “H” ANTENNA INSULATOR INSTALLATION ............................................ 3-4
Figure 3-3. LOWERING INSULATOR POLE ASSEMBLY ........................................... 3-5
Figure 3-4. INSULATOR POLE ASSEMBLY................................................................ 3-5

SOUTHERN AVIONICS COMPANY
“H” Antenna 1-1Introduction
1Introduction
The SAC “H” (helipad) antenna is a low frequency radiobeacon antenna designed for installation
around the perimeter of the helicopter landing decks of offshore platforms and drilling ships. The
antenna is composed of 1/8”, 6x7 fiber core, phosphor bronze wire rope suspended on insulators
approximately 7.5 feet (2.2 meters) outboard from the heliport deck. The support poles are
attached to the helipad safety net support posts with stainless steel bands. The antenna is
designed for ease of maintenance and cleaning. Individual insulators can be pivoted onto the
helipad deck for insulator inspection and cleaning. A special assembly fixture is furnished.

SOUTHERN AVIONICS COMPANY
“H” Antenna1-2 Introduction
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SOUTHERN AVIONICS COMPANY
“H” Antenna 2-1Planning
2 Planning
The following factors should be considered when planning the location of the helipad antenna.
The following figures show installation of antennas to various styles of helipads.
1. By using the following figures, and also the transmitter installation instructions, determine the
suitability of mounting locations for the radiobeacon transmitter and antenna coupler.
• Provide accessibility for maintenance.
• Provide an unobstructed path from the antenna wire to the antenna coupler feed-through
insulator.
• Keep the antenna feed wire out of personnel reach. High RF voltages are present on the
wire.
• Provide sufficient guardrail mounting space for transmitter and antenna coupler
mounting. Approximately 6 feet (2 meters) may be required.
• Provide for availability of electrical power.
2. Determine the appropriate antenna wire path.
• Avoid excessive shielding of the antenna wire by adjacent decks and structures.
• Maintain at least 12 feet (4 meters) separation between refuelling facilities and the
antenna wire and transmitter/antenna coupler site.
• Avoid the extension of the antenna wire into personnel areas.
• Avoid areas used in crane operations.
3. Determine the mounting points for the antenna supports.
• Locate the antenna insulator support poles over the safety net support posts. (See Figure
“Final Tightening of Bands.”)
• Locate the antenna insulator support poles over the safety net support poles at the wire
ends and the platform corners.
• On square helipads of up to 36 feet (11 meters) on a side, not including the width of the
safety net, do not install any additional antenna insulator support poles between the
corner poles. On square helipads of 36 to 70 feet (11 to 21 meter), install one insulator
support pole between the corner poles. On octagonal and hexagonal platforms, install
corner insulator support poles only.
Note: Although eight antenna insulator support poles are furnished, all poles may not be required
for every installation. Unused insulators and poles should be stored for replacement use.

SOUTHERN AVIONICS COMPANY
H Antenna2-2 Planning
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SOUTHERN AVIONICS COMPANY
“H” Antenna 2-3Planning
Figure 2-1 SQUARE HELIPAD WITH END FED ANTENNA WIRE
Figure 2-2 SQUARE HELIPAD WITH CENTER FED ANTENNA WIRE

SOUTHERN AVIONICS COMPANY
H Antenna2-4 Planning
Figure 2-3 HELIPAD OVERHANGING A PLATFORM WITH AN END FED ANTENNA WIRE
Figure 2-4 OCTAGON HELIPAD WITH END FED ANTENNA WIRE

SOUTHERN AVIONICS COMPANY
“H” Antenna 2-5Planning
Figure 2-5 COUPLER INSTALLATION ON OFFSHORE PLATFORM GUARDRAILS

SOUTHERN AVIONICS COMPANY
H Antenna2-6 Planning
Figure 2-6 FINAL TIGHENING OF BANDS

SOUTHERN AVIONICS COMPANY
“H” Antenna 3-1INSTALLATION
3 INSTALLATION
1. Place each antenna insulator support pole on the helipad deck adjacent to the intended
mounting location.
2.Attach each of the antenna insulator support poles to the appropriate safety net support post
according to the following procedures. (See “Final Tightening of Bands”.)
• Lay the antenna insulator support pole on the helipad safety net so that the fixed arm is
along the safety net fence post and the hinged arm is parallel to the perimeter of the
helipad deck. Locate the hinged end of the fixed arm far enough away from the helipad so
that if the hinged arm were pivoted up and back the angle to the helipad would be 45
degrees or less.
• Using the stainless steel banding clamps furnished, loosely attach the fixed arm to the
safety net fence support post with three bands.
• Rotate the hinged arm to a vertical position, lay back over the helipad deck, and complete
tightening of the stainless steel bands.
3. Install insulators on the insulator support poles according to the following procedure when
necessary.
• “Install insulator bushings.See figure, “Bushing Installation.”
• Attach the insulators to the antenna insulator support poles using the hardware provided.
See Figure “H” Antenna Insulator Installation.”
4. Locate the coil of antenna wire and the insulators. Carefully unreel approximately 10 feet of the
antenna wire and retie the soft copper wire used to secure the antenna wire coil. Feed seven of
the insulators onto the antenna wire and attach the antenna wire to the end (eighth) insulator by
feeding the wire through the hole, bending the wire around the wire thimble and fasten with 2 split
bolts. See Figure “H” Antenna Insulator Installation.”
5. Attach the end insulator on the support pole furthest from the transmitter.
6. Unreel antenna wire to the next antenna insulator support pole, secure the coil of wire, and
attach the next insulator. Continue this process for all the antenna insulator support poles.
7. After the last insulator, unreel about 20 feet (6 meters) of excess antenna wire and secure the
coil.
8. Using the helipad assembly fixture, carefully lower the end insulator pole assembly into place
according to the following procedure. See Figures “Lowering Insulator Pole Assembly” and
“Insulator Pole Assembly.”
• Place the pin on the end of the long fixture pole through the lifting eye on the hinged arm.
• Raise the support pole to a vertical position and gradually move it outboard until the pin
on the short fixture pole can be inserted behind the inboard end of the fixed arm.
• Lower the support pole into place (horizontal). Do not insert the locking bolt at this time.

SOUTHERN AVIONICS COMPANY
“H” Antenna3-2 INSTALLATION
Note: As the support poles are lowered into place, additional wire may need to be unreeled from
the wire coil.
Note: If the antenna wire is end fed, the wire is pulled tight and fed directly to the insulator at the
antenna coupler. Steps 10 to 16 can be skipped in this case. If the antenna wire is center fed,
continue with step 10.
10. Pull the antenna wire tight and then mark the point where it passes through the last insulator
by pulling sharply toward the hinged end of the last support pole.
11. Add slack to the antenna wire by swinging the nearest corner pole inboard, then swing the
end pole inboard.
12. Attach the antenna wire to the end pole insulator at the point on the wire marked in step 10 as
per step 4.
13. Locate the point on the antenna wire where the feed point wire will be located and swing the
adjacent insulator poles inboard as required.
14. Hold 2 inches (5cm) of the free end of the feed wire against the antenna wire, secure with 2
split bolt connectors about 1 inch apart.
15. Pass the free end of the feed wire to the antenna coupler and temporarily secure the wire.
16. Lower all the antenna insulator support poles into place, ending with the corner poles.

SOUTHERN AVIONICS COMPANY
“H” Antenna 3-3INSTALLATION
Figure 3-1. BUSHING INSTALLATION

SOUTHERN AVIONICS COMPANY
“H” Antenna3-4 INSTALLATION
“h
Figure 3-2. “H” ANTENNA INSULATOR INSTALLATION

SOUTHERN AVIONICS COMPANY
“H” Antenna 3-5INSTALLATION
Figure 3-3. LOWERING INSULATOR POLE ASSEMBLY
Figure 3-4. INSULATOR POLE ASSEMBLY

SOUTHERN AVIONICS COMPANY
“H” Antenna3-6 INSTALLATION
17. Attach the feed insulator to the antenna coupler using the insulator mounting bracket.
18. Pass the antenna wire thought the insulator clevis and around the wire thimble. Take up
excess slack in the antenna wire, bend the wire back, and secure the antenna wire with the
antenna lead with 2 split blts. (See Figure “Coupler Installation on Offshore Platform Guardrails.”
19. Bring the antenna lead from the insulator down and around to the feed-through insulator on
the antenna coupler. Form a “drip loop” with the wire to prevent water from flowing onto the feed-
through insulator. Do not allow lead within 6 inches (15cm) of ground or surrounding structure.
20. Cut off the excess wire at the feed-through insulator and attach the 1/4 inch lug to the lead
end by crimping and soldering.
21. Attach the lug to the antenna coupler feed-through insulator.
22. Install the 3/8 - 1-1/2 inch locking bolts in the end of the fixed arm of each of the antenna
insulator support poles.