Circularly Polarized FM Broadcast Antenna

Circularly Polarized FM Broadcast Antenna
Circularly Polarized FM
Broadcast Antenna
Versa2une (SLV)
1 to 6-bay, half- and
full-wave-spaced versions
Instruction Manual
Installation, Operation, &
Maintenance
Congratulations!
Thank you for purchasing one of the finest FM broadcast antennas on the
market today. The Shively Labs Versa2une is the top-of-the-line in its class for
its simplicity, superior performance and durability.
Your purchase is backed by the best technical support in the industry. Shively
is a leading manufacturer in the broadcast industry, providing an extensive
range of antennas, transmission line and components. Our technical staff has
a wealth of experience in the broadcast industry and is standing by to serve
you in any way.
This manual is intended to give you a good basic understanding of your
antenna: its proper and safe installation, startup, and operation, and troubleshooting and maintenance information to keep it working satisfactorily for
years to come. Please have everyone involved with the antenna read this
manual carefully, and keep it handy for future reference.
Meanwhile, please feel free to contact your sales representative at Shively
Labs at any time if you need information or help. Call or write:
Publication No. im-SLV 1-6 (170515)
IMPORTANT
Please read this manual in its entirety before beginning
installation of your antenna!
Failure to follow the installation and operation
instructions in this manual could lead to failure of your
equipment and might even void your warranty!
This manual applies only to one- to six-bay SLV antennas
(SLV-1 to SLV-6). For eight- to twelve-bay antennas
(SLV-8 to SLV-12), refer to the appropriate manual
on our Web site.
Table of Contents
Chapter 1 Preparation ........................................................................ 1
Check the shipment.............................................................................. 1
Torque specifications............................................................................ 1
Table 1. Torque specifications ...................................................... 1
Check the parts.................................................................................... 1
Prepare the mounting location. ............................................................. 2
Figure 1. Tower layout, single antenna bay ................................... 2
Figure 2. Tower layout, two-bay antenna ...................................... 3
Figure 3. Tower layout, four-bay antenna...................................... 4
Figure 4. Tower layout, six-bay antenna........................................ 5
High-band or low-band? ....................................................................... 6
Determine "A" dimension...................................................................... 6
Figure 5. Low-band and high-band "A" dimension values, 
full-wave-spaced..................................................................... 6
Figure 6. Low-band and high-band "A" dimension values, 
half-wave-spaced.................................................................... 7
Chapter 2 Arm Assembly .................................................................... 9
Assemble arms. ................................................................................... 9
Figure 7. Arm assembly a............................................................. 9
Figure 8. Arm assembly b............................................................. 9
Figure 9. Arm assembly c ............................................................. 9
Figure 10. Arm assembly d ........................................................... 9
Figure 11. Arm assembly e ........................................................... 9
Figure 12. Arm assembly - complete ........................................... 10
Chapter 3 Bay Assembly (without radomes) ................................... 11
Attach the arms to the boom. ............................................................. 11
Figure 13. Arm hole selection ..................................................... 11
Figure 14. Position first arms ...................................................... 11
Figure 15. Channel attachment ................................................... 12
Figure 16. Vertical bolts ............................................................. 12
Figure 17. Arm attachment - complete ........................................ 13
Install the feedstrap. .......................................................................... 14
Figure 18. Remove nut from endseal........................................... 14
Figure 19. Feedstrap to endseal.................................................. 14
Figure 20. Feedstrap to arms...................................................... 15
Table 2. Feedstrap Mounting Holes ............................................. 15
Check antenna bay assembly. ............................................................. 16
Figure 21. Bay assembly check ................................................... 16
Connect the coax cable....................................................................... 16
Figure 22. Form coax cable ........................................................ 16
Figure 23. Attach coax cable to antenna input ............................. 17
Figure 24. Finished antenna bay assembly................................... 18
i
Table of Contents
Chapter 4 Bay Assembly (with radomes) ......................................... 19
Attach the mount channels to the radome back half. ............................ 19
Figure 25. Mount channels and clamp halves to radome (channels,
clamp halves, radome) .......................................................... 19
Attach the arms to the boom. ............................................................. 20
Figure 26. Arm hole selection ..................................................... 20
Figure 27. Position inner arms .................................................... 20
Figure 28. Radome, inner arms to boom (bay, radome)................ 21
Install the feedstrap. .......................................................................... 22
Figure 29. Remove wingnut........................................................ 22
Figure 30. Feedstrap to endseal.................................................. 22
Figure 31. Feedstrap to arms...................................................... 23
Table 3. Feedstrap Mounting Holes ............................................. 23
Figure 32. Feedstrap ends bent down ......................................... 24
Check antenna bay assembly. ............................................................. 24
Figure 33. Bay assembly check ................................................... 24
Attach the coax cable. ........................................................................ 24
Figure 34. Form coax cable ........................................................ 24
Figure 35. Attach coax cable to antenna input ............................. 25
Install the radome front half. .............................................................. 26
Figure 36. Radome front half installation ..................................... 26
Figure 37. Seal around radome openings..................................... 26
Figure 38. Finished antenna bay assembly with radome, back view
........................................................................................... 27
Chapter 5 Mounting the Antenna Bay(s) ......................................... 29
Mount the antenna bay on the tower leg or pole. ................................. 29
Figure 39. Mount the antenna bay(s) (without radomes) .............. 29
Figure 40. Mount the antenna bay(s) (with radomes) ................... 30
Figure 41. Adjust the heading..................................................... 30
Figure 42. Tighten mounting hardware........................................ 31
Chapter 6 Connecting the Antenna (single-bay).............................. 33
Connect the coax feedline cable. ......................................................... 33
Figure 43. Secure feedline cable ................................................. 33
Connect the transmission line cable. .................................................... 33
Figure 44. Transmission line connection ...................................... 34
Chapter 7 Connecting the Antenna (2 or more bays) ...................... 35
Mount the power divider(s)................................................................. 35
Two-bay antenna: ......................................................................... 35
Figure 45. Power divider mounting (two-bay) .............................. 35
Four-bay antenna:......................................................................... 35
Figure 46. Power divider mounting (four-bay).............................. 36
Six-bay antenna: ........................................................................... 36
Figure 47. Power divider mounting (six-bay)................................ 37
Secure the coax feedline cables........................................................... 37
Figure 48. Secure the feedline cables .......................................... 38
ii
Table of Contents
Connect the transmission line cable. .................................................... 38
Figure 49. Transmission line cable connection.............................. 39
Chapter 8 Startup............................................................................. 41
Optimize VSWR.................................................................................. 41
Figure 50. Apply the signal ......................................................... 41
Adjust to minimize reflected power if necessary. .................................. 41
Operate............................................................................................. 41
Chapter 9 Troubleshooting............................................................... 43
Broad Spectrum RF Noise ................................................................... 43
High VSWR ....................................................................................... 43
Change in Coverage .......................................................................... 43
Chapter 10 Maintenance .................................................................. 45
Log .................................................................................................. 45
Inspection ........................................................................................ 45
Paint ................................................................................................ 45
Return Policy .................................................................................... 45
Chapter 11 Parts .............................................................................. 47
Parts list. ........................................................................................... 47
Table 4. Bay components (per bay) ............................................ 47
Figure 51. Bay assembly ............................................................ 49
Table 5. Radome components (per bay) ...................................... 50
Figure 52. Radome assembly...................................................... 50
Table 6. Accessories (per array).................................................. 51
iii
Preparation
1
Check the shipment.
Preparation
As soon as you receive your antenna, BEFORE signing for the shipment:
a. Check to be sure all the material has arrived.
b. Check for evident damage to any of the boxes.
c. If any boxes are missing, or if any are obviously damaged, describe the
problem in a WRITTEN note on the shipping papers BEFORE signing them.
Then call Shively right away, and we’ll do everything we can to correct the
situation.
Important!
Never store the antenna system outdoors, boxed or otherwise. Take
pains to keep the antenna components dry. You will need to purge moisture from the interior of the antenna components before applying transmitter power, and purging will be much more time-consuming if the
components get wet.
Torque specifications.
NOTE
Use an anti-seize compound to minimize galling on stainless steel
threads.
Table 1. Torque specifications
Hardware size
Torque (dry)
3.75 lb-ft (0.52 kg-m)
3.4 lb-ft (0.47 kg-m)
M8 stainless
16 lb-in (2.2 kg-m)
14 lb-ft (1.9 kg-m)
M12 stainless
54 lb-ft (7.5 kg-m)
48 lb-ft (6.6 kg-m)
7/16 DIN (antenna in- 18 - 22 lb-in (21 - 25 cm-kg)
put fitting)
Check the parts.
Torque (lubricated)
M5 stainless steel
n/a
Check to be sure all the parts listed in Table 4, Table 5, and Table 6 have
arrived in good condition.
NOTE
Item callouts are consistent across all the illustrations in this technical
sheet.
1
Preparation
Prepare the mounting
location.
Figure 1. Tower layout, single
antenna bay
Remember!
It is YOUR responsibility to
ensure that your installation meets all applicable
codes and the centerlineof-radiation requirements
of your FCC construction
permit.
2
Preparation
Figure 2. Tower layout, two-bay
antenna
3
Preparation
Figure 3. Tower layout, four-bay
antenna
4
Preparation
Figure 4. Tower layout, six-bay
antenna
5
Preparation
High-band or lowband?
87.5 - 98 MHz = Low-band
Determine "A"
dimension.
Note the "A" dimension for your antenna, full-wave (Figure 5) or half-wave
(Figure 6) spaced and high- or low-band. You’ll need it when assembling the
bays.
98.1 - 108 MHz = High-band.
Figure 5. Low-band and highband "A" dimension values, 
full-wave-spaced
6
Preparation
Figure 6. Low-band and highband "A" dimension values, 
half-wave-spaced
7
Arm Assembly
2
Assemble arms.
Arm Assembly
a. Screw the acorn nut (Figure 7, 20) onto the 230 mm threaded rod (1) as far
as it will go.
Figure 7. Arm assembly a
b. Screw an M12 hex nut (Figure 8, 19) tightly against the acorn nut.
Figure 8. Arm assembly b
c. Insert the threaded rod into the arm (Figure 9, 4 or 5).
Figure 9. Arm assembly c
d. (Figure 10) Set the "A" dimension (from Figure 5) to a tolerance of ± 1/8"
(3 mm).
Figure 10. Arm assembly d
e. (Figure 11)Screw the hex nut against the square nut at the end of the arm
to secure the threaded rod and the "A" dimension.
Figure 11. Arm assembly e
f. (Figure 12) Repeat for the other 3 arms.
9
Arm Assembly
Figure 12. Arm assembly complete
g. Repeat for the other bays, if applicable.
10
Bay Assembly (without radomes)
3
Attach the arms to the
boom.
Bay Assembly (without radomes)
NOTE
This step may be made easier by clamping the boom to a surface or
mounting it temporarily on a vertical pole.
a. (Figure 13) Identify the mounting holes to be used.
Figure 13. Arm hole selection
CAUTION
Parts 5, with the feedstrap mounting holes, must be mounted diagonally
across from each other as shown.
b. Position the first arms (Figure 14, 4 and 5) on the boom (6).
Figure 14. Position first arms
11
Bay Assembly (without radomes)
c. Attach the channel mount (Figure 15, 2) and arms, using M8 hardware (16,
15, 13, and 14), finger-tight only.
Figure 15. Channel attachment
CAUTION
To ensure proper arm alignment, always tighten the nuts on the vertical
bolts before tightening the horizontal ones.
d. Secure each arm with a vertical M8 bolt and hardware (Figure 16, 16, 15, 13,
and 14). Torque in accordance with Table 1 on page 1.
Figure 16. Vertical bolts
e. Tighten the nuts on the horizontal bolts. Torque in accordance with Table 1.
12
Bay Assembly (without radomes)
f. Repeat to attach the other two arms in their correct positions (Figure 17).
g. Using the M8 hardware (16, 15, 13, and 14), attach the spacers (3) across
the gaps between the arms as shown.
Figure 17. Arm attachment complete
13
Bay Assembly (without radomes)
Install the feedstrap.
a. Remove the nut (Figure 18, 22), the top lockwasher, and the topmost flat
washer from the endseal (7). Leave the second flat washer in place.
Figure 18. Remove nut from
endseal
b. Secure the feedstrap (Figure 19, 8) to the endseal.
Figure 19. Feedstrap to endseal
14
Bay Assembly (without radomes)
c. Using the M5 hardware (Figure 20, 11, 12, 9, and 10), secure the feedstrap
to the appropriate holes (see Table 2) in the arms.
Figure 20. Feedstrap to arms
Table 2. Feedstrap Mounting Holes
Full-wave-spaced: low-band single bay and arrays
Hole #1 (innermost hole)
Full-wave-spaced: high-band single bay and arrays
Hole #2 (middle hole)
Half-wave-spaced: high- and low-band arrays
Hole #3 (outermost hole)
15
Bay Assembly (without radomes)
Check antenna bay
assembly.
Before proceeding, take a moment to check the assembly of your bays.
The dimensions should be approximately as shown in Figure 21. If they are,
you have used the correct arm attachment holes and oriented the arms correctly.
Figure 21. Bay assembly check
Connect the coax
cable.
CAUTION
Stressing a coax connection after assembly can detune the system.
Therefore, never make a connection and then bend or twist the cable, or
use the connector to force the coax into shape. Form the cable first,
then attach it to the connector.
CAUTION
The minimum bending radius for 1/2" coax is 3" (8 cm). Do not bend it
too tightly; you may damage it.
a. Form the cable (Figure 22, 28) to the desired shape.
Figure 22. Form coax cable
CAUTION
Do not overtighten the connectors. Overtightening may damage them.
b. (Figure 23) Attach the elbow on the cable (28) to the antenna input. Torque
the connector to 18 - 22 lb-in (21 - 25 kg-cm).
16
Bay Assembly (without radomes)
Figure 23. Attach coax cable to
antenna input
c. Seal the joint thoroughly with splice tape (29).
This completes assembly of your antenna bay without radomes (Figure 24 on
page 18).
If your antenna has multiple bays, repeat this chapter for the remaining bays.
Then please proceed to Mounting the Antenna Bay(s) on page 29.
17
Bay Assembly (without radomes)
Figure 24. Finished antenna bay
assembly
18
Bay Assembly (with radomes)
4
Attach the mount
channels to the
radome back half.
Bay Assembly (with radomes)
a. Attach a center mount channel (Figure 25, 2) and two end mount channels
(27) to the radome back half (23), using the threaded rods (1) and M12
hardware (19, 17, 18) as shown.
b. Loosely attach the clamp halves (21) to the threaded rods.
Figure 25. Mount channels and
clamp halves to radome
(channels, clamp halves,
radome)
19
Bay Assembly (with radomes)
Attach the arms to the
boom.
NOTE
This step may be made easier by clamping the boom to a surface or
mounting it temporarily on a vertical pole.
a. (Figure 26) Identify the mounting holes to be used.
Figure 26. Arm hole selection
CAUTION
b. Parts 5, with the feedstrap mounting holes, must be mounted diagonally
across from each other as shown.
c. Position the inner arms (Figure 27, 4 and 5) on the boom (6).
Figure 27. Position inner arms
20
Bay Assembly (with radomes)
d. Attach the radome back half assembly (assembled above), the center mount
channel (Figure 28, 2), and the inner arms (4) and (5) to the boom (6), using
M8 hardware (16, 15, 13, and 14), finger-tight only.
Figure 28. Radome, inner arms
to boom (bay, radome)
NOTE
The channel of the boom fits into the rectangular slot in the back of the
radome half.
CAUTION
To ensure proper arm alignment, always tighten the nuts on the vertical
bolts before tightening the horizontal ones.
e. Secure each arm with a vertical M8 bolt and hardware (16, 15, 13, and 14).
Torque in accordance with Table 1 on page 1.
f. Tighten the nuts on the horizontal bolts (Figure 28). Torque in accordance
with Table 1.
g. Repeat to attach the other two arms in their correct positions.
21
Bay Assembly (with radomes)
Install the feedstrap.
a. Remove the nut (Figure 29, 22), the top lockwasher, and the topmost flat
washer from the endseal (7). Leave the second flat washer in place.
Figure 29. Remove wingnut
b. Using the endseal nut, secure the feedstrap (Figure 30, 8) to the endseal.
Figure 30. Feedstrap to endseal
22
Bay Assembly (with radomes)
c. Using the M5 hardware (Figure 31, 11, 12, 9, and 10), secure the feedstrap
to the innermost holes in the arms.
Figure 31. Feedstrap to arms
Table 3. Feedstrap Mounting Holes
Full-wave-spaced: low-band single bay and arrays
Hole #1 (innermost hole)
Full-wave-spaced: high-band single bay and arrays
Hole #2 (middle hole)
Half-wave-spaced: high- and low-band arrays
Hole #3 (outermost hole)
23
Bay Assembly (with radomes)
d. (High-band only) Bend the ends of the feedstrap down over the arms to
allow clearance inside the radome (Figure 32).
Figure 32. Feedstrap ends bent
down
Check antenna bay
assembly.
Before proceeding, take a moment to check the assembly of your bays.
The dimensions should be approximately as shown in Figure 33. If they are,
you have used the correct arm attachment holes and oriented the arms correctly.
Figure 33. Bay assembly check
Attach the coax cable.
CAUTION
Stressing a coax connection after assembly can detune the system.
Therefore, never make a connection and then bend or twist the cable, or
use the connector to force the coax into shape. Form the cable first,
then attach it to the connector.
CAUTION
The minimum bending radius for 1/2" coax is 3" (8 cm). Do not bend it
too tightly; you may damage it.
a. Form the cable (Figure 34, 28) to the desired shape.
24
Bay Assembly (with radomes)
Figure 34. Form coax cable
b. Insert the elbow end of the coax feedline cable (Figure 35, 28) in through
the round hole in the back of the radome half (23), and connect it to the base
of the endseal (7). Torque the cable fitting in accordance with Table 1 on
page 1.
Figure 35. Attach coax cable to
antenna input
c. Seal the joint thoroughly with splice tape (29).
25
Bay Assembly (with radomes)
Install the radome
front half.
a. Using the 1/4" hardware in the hardware kit (Figure 36, 26), attach the
radome front half (24) to the radome back half (23).
Figure 36. Radome front half
installation
b. Using splice tape (Figure 37, 29, provided with the antenna) and Dow
Corning 744 adhesive-sealant (25), seal:
• The perimeter of the center mount channel on the back of the
radome, and
• The hole in the radome back half around the coax cable.
Figure 37. Seal around radome
openings.
26
Bay Assembly (with radomes)
This completes assembly of your antenna bay with radomes (Figure 38).
If your antenna has multiple bays, repeat this chapter for the remaining bays.
Then please proceed to Mounting the Antenna Bay(s) on page 29.
Figure 38. Finished antenna bay
assembly with radome, back
view
27
Mounting the Antenna Bay(s)
5
Mount the antenna bay
on the tower leg or
pole.
Mounting the Antenna Bay(s)
NOTE
If the supporting structure is non-metallic (for example, a chimney or a
tree), run a ground cable (customer-supplied) from the antenna mount
to a post driven into the ground.
a. Using the M12 hardware (Figure 39, 19, 17, 18), secure the threaded rods
(1) to the mount channel, with the end of the threaded rod extending
approximately one inch beyond the surface of the channel, as shown.
b. Then use the threaded rods with M12 hardware and clamp half (21) to clamp
the antenna to the tower leg or pole at the location you marked and cleared
of paint. Do not tighten fully at this time.
Figure 39. Mount the antenna
bay(s) (without radomes)
29
Mounting the Antenna Bay(s)
c. (With radomes only) Similarly, clamp the upper and lower end mount
channels (27) to the tower leg or pole (Figure 40). Do not tighten fully.
Figure 40. Mount the antenna
bay(s) (with radomes)
d. (Figure 41) Adjust the antenna heading.
Figure 41. Adjust the heading.
30
Mounting the Antenna Bay(s)
e. (Figure 42) Tighten the mounting hardware (19, 17, 18) on the threaded
rods (1). Torque in accordance with Table 1 on page 1.
Figure 42. Tighten
mounting hardware.
f. Retouch the tower paint as necessary.
g. (2-bay or 4-bay) Repeat this chapter for the remaining bays.
31
Connecting the Antenna (single-bay)
6
Connect the coax
feedline cable.
Connecting the Antenna (single-bay)
CAUTION
Stressing a coax connection after assembly can detune the system.
Therefore, never make a connection and then bend or twist the cable, or
use the connector to force the coax into shape. Form the cable first,
then attach it to the connector.
CAUTION
The minimum bending radius for 1/2" coax is 3" (8 cm). Do not bend it
too tightly; you may damage it.
CAUTION
Do not overtighten the connectors. Overtightening may damage them.
a. Secure the cable (Figure 43, 28) to the mounting pole or tower leg, using tiewraps (30) or customer-supplied cable clamps.
Figure 43. Secure feedline cable
Connect the
transmission line cable.
You need to provide a transmission line cable from your transmitter, terminated with a female 7/16 DIN connector.
CAUTION
The antenna is non-pressurized. If you are using pressurized cable, you
must install a gas stop at the coax cable input.
33
Connecting the Antenna (single-bay)
a. (Figure 44) Connect the transmission line cable to the coax cable input, with
a gas stop if necessary. Torque to 18 - 22 lb-ft (2.4 - 3 Pa). Seal with splice
tape.
Figure 44. Transmission line
connection
b. Secure the transmission line cable to the mounting pole or tower leg, using
customer-supplied cable clamps.
Installation of your Versa2une is complete. Please proceed to Startup.
NOTE
If you have any problems with installation, call Shively and talk with a
designer or Sales.
34
Connecting the Antenna (2 or more bays)
7
Connecting the Antenna (2 or more bays)
Mount the power
divider(s).
Two-bay antenna:
Using two power divider mounting kits (Figure 45, 31), mount the power
divider (32) to the mounting structure with its outlet ports roughly halfway
between the antenna bays. Locate the mounts as close to the ends of the
power divider as you can.
Figure 45. Power divider
mounting (two-bay)
Four-bay antenna:
Using two power divider mounting kits (Figure 45, 31), mount the power
divider (33) to the mounting structure with its outlet ports roughly halfway
along the antenna bays. Locate the mounts as close to the ends of the power
divider as you can.
35
Connecting the Antenna (2 or more bays)
Figure 46. Power divider
mounting (four-bay)
Six-bay antenna:
Using two power divider mounting kits (Figure 47, 31), mount the power
divider (34) to the mounting structure with its outlet ports roughly halfway
along the antenna bays. Locate the mounts as close to the ends of the power
divider as you can.
36
Connecting the Antenna (2 or more bays)
Figure 47. Power divider
mounting (six-bay)
Secure the coax
feedline cables.
CAUTION
Stressing a coax connection after assembly can detune the system.
Therefore, never make a connection and then bend or twist the cable, or
use the connector to force the coax into shape. Form the cable first,
then attach it to the connector.
CAUTION
The minimum bending radius for 1/2" coax is 3" (8 cm). Do not bend it
too tightly; you may damage it.
37
Connecting the Antenna (2 or more bays)
CAUTION
Do not overtighten the connectors. Overtightening may damage them.
a. Connect the input ends of the antenna bay cables (Figure 48, 28) to the
power divider outputs.
b. Secure the cables to the mounting pole or tower leg, using tie-wraps (30) or
customer-supplied cable clamps.
Figure 48. Secure the feedline
cables
Connect the
transmission line cable.
CAUTION
The antenna and power divider are non-pressurized. If you are using
pressurized transmission line cable, it MUST include a gas stop termination.
a. Connect the transmission line cable from the transmitter to the input of the
power divider (Figure 49, 32 or 33), with an adapter if necessary.
38
Connecting the Antenna (2 or more bays)
Figure 49. Transmission line
cable connection
b. Secure the transmission line cable to the mounting pole or tower leg, using
customer-supplied cable clamps.
Installation of your Versa2une is complete. Please proceed to Startup.
NOTE
If you have any problems with installation, call Shively and talk with a
designer or Sales.
39
Startup
8
Startup
WARNING
Whenever a rigger is on the tower in the area of the antenna, shut off
the signal and lock it off so that it cannot be turned on accidentally. RF
emissions at close range are hazardous.
NOTE
The Versa2une does not require pressurization or purging.
Optimize VSWR.
(Figure 50) Apply a low-power signal to the antenna and read reflected power
(VSWR). VSWR should be below 1.2:1.
Figure 50. Apply the signal
Adjust to minimize
reflected power if
necessary.
a. Loosen one jam nut on one arm of one antenna element and lengthen that
arm by 10 mm (3/8"). With personnel clear, check VSWR again.
b. If the VSWR (reflected power) has increased, return that arm to its original
setting. Then shorten ALL arms by 3 mm (1/8").
c. If the VSWR has decreased, return that arm to its original setting. Then
lengthen ALL arms by 3 mm (1/8").
d. Repeat steps a - c until VSWR is below 1.2:1.
e. Secure all the arms by tightening their jam nuts.
Operate.
Once the antenna has been installed and VSWR has been confirmed, simply
apply the transmitter signal. Don’t exceed the rated power of the antenna.
41
Troubleshooting
9
Troubleshooting
Broad Spectrum RF
Noise
This indicates that some component is not in good electrical contact with the
tower. Make sure mounts are tight, that tower paint has been removed from
under the mounts, and that components of other systems are likewise in good
contact with the tower.
High VSWR
This is caused by any factor that changes the impedance match between the
antenna and the transmitter. Look for:
• Defective RF connector. Make sure connectors are in good shape,
and that center pins are not bent over.
• Damage to any antenna components.
• Paint on radiators.
• Ice buildup on radiators.
• Interference from other tower components, especially components
broken by wind or ice.
Change in Coverage
This may be caused by the same factors that can cause high VSWR. Look for
VSWR changes as well.
Do recognize, however, that apparent changes in coverage may be due to subjective factors or faults of the receiving equipment. Before doing more than
checking the VSWR, be sure that an actual coverage change has occurred.
43
Maintenance
10
Maintenance
WARNING
Whenever a rigger is on the tower in the area of the antenna, shut off
the signal and lock it off so that it cannot be turned on accidentally. RF
emissions at close range are hazardous.
Log
We recommend that you keep a log of VSWR readings and any other performance notes and maintenance history for your antenna. Such a record can be
invaluable for troubleshooting.
Inspection
Whenever a rigger is on the tower for any reason, it is a good idea to have
him check your antenna for general condition, looseness of connectors and
mounts, and electrical damage.
Paint
The radiator should never be painted; this will affect the VSWR.
Return Policy
When returning any material to the factory, be sure to call your salesperson
and obtain an returned materials authorization (RMA) number first. Material
may be refused and sent back to you at your expense if you don’t do this.
45
Parts
11
Parts
Parts list.
NOTE
Item callouts are consistent across all the illustrations in this technical
sheet.
Table 4. Bay components (per bay)
Description
without radomes
1
bay
with radomes
2
4
6
bays bays bays
1
bay
2
4
6
bays bays bays
Shively P/N
1. Threaded rod, M12 x 1.75 x 230
mm (9 in) long
6
12
24
36
10
20
40
60
M0012x1.75RC230
OO
2. Center mount channel
1
2
4
6
1
2
4
6
100394-01
3. Spacer, dipole arm
2
4
8
12
2
4
8
12
100394-04
4. Arm without feedstrap holes
(marked with 2 UP sticker)
2
4
8
12
2
4
8
12
100394-G502
5. Arm with feedstrap holes
(marked with 1 DOWN sticker)
2
4
8
12
2
4
8
12
100394-G503
6. Boom assembly (number stickers
indicate arm locations)
1
2
4
12
1
2
4
12
100394-G504
7. Endseal assembly
1
2
4
6
1
2
4
6
96786-G503
8. Feedstrap
1
2
4
6
1
2
4
6
99350-04
9. Flat washer, M5
(part of hardware kit 99350G507HP)
6
12
24
36
6
12
24
36
M0005SSF
10. Lock washer, M5
(part of hardware kit 99350G507HP)
3
6
12
18
3
6
12
18
M0005SSS
11. Hex bolt, M5 x 0.8 x 35
(part of hardware kit 99350G507HP)
3
6
12
18
3
6
12
18
M0005X0.8
SS035HM
12. Hex nut, M5 x 0.8
(part of hardware kit 99350G507HP)
3
6
12
18
3
6
12
18
M0005X8SS
13. Flat washer, M8
(part of hardware kit 99350G507HP)
27
54
108
162
27
54
108
162
M0008SSF
14. Lock washer, M8
(part of hardware kit 99350G507HP)
15
30
60
90
15
30
60
90
M0008SSS
15. Hex nut, M8 x 1.25
(part of hardware kit 99350G507HP)
15
30
60
90
15
30
60
90
M0008X1.25SS
16. Hex bolt, M8 x 1.25 x 45
(part of hardware kit 99350G507HP)
13
26
52
78
13
26
52
78
M0008X1.25SS045
HM
47
Parts
Table 4. Bay components (per bay)
Description
without radomes
1
bay
with radomes
2
4
6
bays bays bays
1
bay
2
4
6
bays bays bays
Shively P/N
17. Flat washer, M12
(part of hardware kit 99350G501HP)
6
12
24
36
18
36
72
108
M0012SSF
18. Lock washer, M12
(part of hardware kit 99350G501HP)
4
8
16
24
12
24
48
72
M0012SSS
19. Hex nut, M12 x 1.75
(part of hardware kit 99350G501HP)
15
52
108
162
26
52
108
162
M0012x1.75SS
20. "Acorn" nut, M12 x 1.75
(part of hardware kit 99350G501HP)
4
8
16
24
4
8
16
24
M0012x1.75SSACN
21. Clamp half, bolt spacing 4-1/16"
1
2
4
6
1
2
4
6
SCP
22. Hex nut, M5 x 0.8 (shipped on
endseal, item 13)
1
2
4
6
1
2
4
6
M0005-0.8SS
48
Parts
Figure 51. Bay assembly
49
Parts
Table 5. Radome components (per bay)
Description
1
bay
2
4
6
bays bays bays
Shively P/N
23. Back radome half
(cable hole & slot for boom
channel)
1
2
4
6
99348-01
24. Front radome half
(overlapping flange)
1
2
4
6
99348-02
25. Dow Corning 744 adhesive-
sealant, cartridge
1
1
1
1
DO 88060
26. Radome flange bolt kit
(contains 24 1/4-20 bolts, 24
nuts, 48 flat washers, 24 lock
washers)
1
2
4
6
93585-G504
27. End mount channel
2
4
8
12
99351-02
Figure 52. Radome assembly
50
Parts
Table 6. Accessories (per array)
Description
1
bay
28. Coax cable section, 10 ft (3.0
m) long, 90° 7/16 DIN male
on output end and 7/16 DIN
male on input end
1
2
n/a
n/a
99349-G511
n/a
n/a
4
6
99349-G520
29. Splice tape
1
2
4
4
92042-01
30. Tie-wrap
36
72
144
144
TY529MX
31. Power divider mounting kit
0
1
1
1
98162-G501
32. Power divider, 2-way, 7/8" EIA
flange to 716 DIN male
0
1
0
0
99332-G502
33. Power divider, 4-way, 7/8" EIA
flange to 716 DIN male
0
0
1
0
99385-G501
34. Power divider, 6-way, 7/8" EIA
flange to 716 DIN male
0
0
0
1
078F-716DX6
Coax cable section, 20 ft (6.1
m) long, 90° 7/16 DIN male
on output end and 7/16 DIN
male on input end
51
2
4
6
bays bays bays
Shively P/N
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising