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SAA Top Mount Heavy Null-Fill
RFStar™ UHF High Power Top Mount Slot Antennas with Enhanced Elevation Pattern. Low Wind-load, Horizontal, Elliptical or Circular Polarization

PRODUCT DESCRIPTION

The RFStar™  UHF slotted array antennas provide a simple and reliable option for single or dual channel fixed polarization applications. They are fully enclosed in a radome for high performance and reliability. They are available in horizontal, elliptical and circular polarizations. 
The SAA Top-Mount E-Pattern family of antennas provides customizable solutions in a low wind load format. 
The SAA E-pattern features high-gain with natural heavy null-fill.
Azimuth radiation patterns are customized to the exact customer requirements. A selection of some of the most common Azimuth radiation patterns are shown in these product datasheets. For additional options contact RFS or consult the RFS Antenna Selection and Planning Tool. To download, click here

FEATURES / BENEFITS

  • Very smooth null-fill. The E Series RFStar antennas feature high-gain with natural heavy null-fill
  • High power rating
  • Low wind load
  • Horizontal, Elliptical and Circular polarizations available
  • Wide range of azimuth and elevation patterns and null fill options
  • Single-channel or Dual channel options available for adjacent channel allocations
  • Rugged design with enclosed radome for high performance and reliability
  • Manufactured in the USA – local staff ready to support your deployments

TECHNICAL FEATURES

Details 

Product Type   High Power Top Mount Slot Antenna with Enhanced Null-Fill

Electrical Specifications 

Antenna Type   Slot Antenna
Operating Frequency Range MHz 470-698
Number of Channels   Single channel (Dual option)
Polarization   Horizontal, Elliptical, Circular
Azimuth Radiation Pattern   Omni, Omnioid, Cardioid, Skull, Sector, Peanut or Trilobe
VSWR   <1.08:1 (typically <1.04:1)
Impedance Ohms  50 (for 4-1/16" and 6-1/8" Inputs)
 75 (for 6-1/8", 7-3/16"and 8-3/16" Inputs)
Input Power Max. kW Up to 90 (depends on the number of bays and input connector size) – 
Contact RFS or consult the RFS Antenna Analysis and Selection Tool
Input Connector Sizes   8-3/16", 7-3/16", 6-1/8" or 4-1/16"
Beam Tilt

degrees
[Note 5]

0-1.5

Mechanical Specifications 

Mounting   Top Mounting
Radome Diameter mm (in)
[note 2]
538 (21.2)
Pressurization Operational kPa (psi) 10 to 25 (1.4-3.6)
Pressurization Test kPa (psi) 100 (15)

Material

Material - Radome   UV Resistant Polycarbonate
Material - Insulators   Virgin PTFE
Material - Support Pole / Mounting   Hot Dipped Galvanized Steel
Material - Feedline   Copper
Color   Aviation Orange or White radome (other colors available on request)

DATA FOR ANTENNAS WITH O4 PATTERN

 
Antenna Model  

SAA12E-

O4

SAA18E-

O4

SAA20E-

O4

SAA24E-

O4

SAA28E-

O4

SAA30E-

O4

SAA32E-

O4

Azimuth Pattern Type   Omni-directional
Azimuth Pattern Directivity Numerical 1.0
Elevation Pattern Type   Heavy Null Fill (type E)
Number of Bays [note 1] 12 18 20 24 28 30 32
Elevation RMS Gain Numerical 12.9 18.2 20.0 23.7 27.1 28.4 29.6
Peak Gain Numerical 12.9 18.2 20.0 23.7 27.1 28.4 29.6
Peak Gain dBd 11.1 12.6 13.0 13.7 14.3 14.5 14.7
DATA FOR ANTENNAS WITH ATW-S PATTERN  
Antenna Model    SAA12E-ATW_S SAA18E-ATW_S SAA20E-ATW_S SAA24E-ATW_S SAA28E-ATW_S SAA30E-ATW_S SAA32E-ATW_S
Azimuth Pattern Type   Skull ATW-S
Azimuth Pattern Directivity Numerical 1.8
Elevation Pattern Type   Heavy Null Fill (type E)
Number of bays [note 1] 12 18 20 24 28 30 32
Elevation RMS Gain Numerical 12.9 18.2 20.0 23.7 27.1 28.4 29.6
Peak Gain Numerical  23.2 32.8 36.0 42.7 48.8 51.1 53.3
Peak Gain dBd 13.7 15.2 15.6 16.3 16.9 17.1 17.3

DATA FOR ANTENNAS WITH S180 PATTERN

 
Antenna Model   

SAA12E-

S180

SAA18E-

S180

SAA20E-

S180

SAA24E-

S180

SAA28E-

S180

SAA30E-

S180

SAA32E-

S180

Azimuth Pattern Type   Skull S180
Azimuth Pattern Directivity Numerical 1.8
Elevation Pattern Type   Heavy Null Fill (type E)
Number of bays [note 1] 12 18 20 24 28 30 32
Elevation RMS Gain Numerical 12.9 18.2 20.0 23.7 27.1 28.4 29.6
Peak Gain Numerical 23.2 32.8 36.0 42.7 48.8 51.1 53.3
Peak Gain dBd 13.7 15.2 15.6 16.3 16.9 17.1 17.3

DATA FOR ANTENNAS WITH S190 PATTERN

 
Antenna Model   

SAA12E-

S190

SAA18E-

S190

SAA20E-

S190

SAA24E-

S190

SAA28E-

S190

SAA30E-

S190

SAA32E-

S190

Azimuth Pattern Type   Skull S190
Azimuth Pattern Directivity Numerical 1.9
Elevation Pattern Type   Heavy Null Fill (type E)
Number of bays [note 1] 12 18 20 24 28 30 32
Elevation RMS Gain Numerical 12.9 18.2 20.0 23.7 27.1 28.4 29.6
Peak Gain Numerical 24.5 34.7 38.0 45.0 51.5 54.0 56.2
Peak Gain dBd 13.9 15.4 15.8 16.5 17.1 17.3 17.5

DATA FOR ANTENNAS WITH ATW-WC PATTERN

 
Antenna Model    SAA12E-ATW_WC SAA18E-ATW_WC SAA20E-ATW_WC SAA24E-ATW_WC SAA28E-ATW_WC SAA30E-ATW_WC SAA32E-ATW_WC
Azimuth Pattern Type   Wide Cardioid ATW-WC
Azimuth Pattern Directivity Numerical 1.4
Elevation Pattern Type   Heavy Null Fill (type E)
Number of bays [note 1] 12 18 20 24 28 30 32
Elevation RMS Gain Numerical 12.9 18.2 20.0 23.7 27.1 28.4 29.6
Peak Gain Numerical 18.1 25.5 28.0 33.2 37.9 39.8 41.4
Peak Gain dBd 12.6 14.1 14.5 15.2 15.8 16.0 16.2
DATA FOR ANTENNAS WITH CT150 PATTERN  
Antenna Model    SAA12E-CT150 SAA18E-CT150 SAA20E-CT150 SAA24E-CT150 SAA28E-CT150 SAA30E-CT150 SAA32E-CT150
Azimuth Pattern Type   Cardioid CT150
Azimuth Pattern Directivity Numerical 1.5
Elevation Pattern Type   Heavy Null Fill (type E)
Number of bays [note 1] 12 18 20 24 28 30 32
Elevation RMS Gain Numerical 12.9 18.2 20.0 23.7 27.1 28.4 29.6
Peak Gain Numerical 19.4 27.4 30.0 35.6 40.7 42.6 44.4
Peak Gain dBd 12.9 14.4 14.8 15.5 16.1 16.3 16.5

DATA FOR ANTENNAS WITH ATW-C1 PATTERN  
Antenna Model  

SAA12E-

ATW_C1

SAA18E-

ATW_C1

SAA20E-

ATW_C1

SAA24E-

ATW_C1

SAA28E-

ATW_C1

SAA30E-

ATW_C1

SAA32E-

ATW_C1

Azimuth Pattern Type   Cardioid ATW-C1
Azimuth Pattern Directivity Numerical 1.5
Elevation Pattern Type   Heavy Null Fill (type E)
Number of Bays [note 1] 12 18 20 24 28 30 32
Elevation RMS Gain Numerical 12.9 18.2 20.0 23.7 27.1 28.4 29.6
Peak Gain Numerical 19.4 27.4 30.0 35.6 40.7 42.6 44.4
Peak Gain dBd 12.9 14.4 14.8 15.5 16.1 16.3 16.5
DATA FOR ANTENNAS WITH C170 PATTERN  
Antenna Model  

SAA12E-

C170

SAA18E-

C170

SAA20E-

C170

SAA24E-

C170

SAA28E-

C170

SAA30E-

C170

SAA32E-

C170

Azimuth Pattern Type [note 6] Cardioid C170
Azimuth Pattern Directivity Numerical 1.7
Elevation Pattern Type   Heavy Null Fill (type E)
Number of Bays [note 1] 12 18 20 24 28 30 32
Elevation RMS Gain Numerical 12.9 18.2 20.0 23.7 27.1 28.4 29.6
Peak Gain Numerical 21.9 31.0 34.0 40.3 46.1 48.3 50.3
Peak Gain dBd 13.4 14.9 15.3 16.1 16.6 16.8 17.0

DATA FOR ANTENNAS WITH ATW-C2 PATTERN  
Antenna Model    SAA12E-ATW_C2 SAA18E-ATW_C2 SAA20E-ATW_C2 SAA24E-ATW_C2 SAA28E-ATW_C2 SAA30E-ATW_C2 SAA32E-ATW_C2
Azimuth Pattern Type   Cardioid ATW-C2
Azimuth Pattern Directivity Numerical 1.8
Elevation Pattern Type   Heavy Null Fill (type E)
Number of bays [note 1] 12 18 20 24 28 30 32
Elevation RMS Gain Numerical 12.9 18.2 20.0 23.7 27.1 28.4 29.6
Peak Gain Numerical 23.2 32.8 36.0 42.7 48.8 51.1 53.3
Peak Gain dBd 13.7 15.2 15.6 16.3 16.9 17.1 17.3
DATA FOR ANTENNAS WITH C190 PATTERN  
Antenna Model   

SAA12E-

C190

SAA18E-

C190

SAA20E-

C190

SAA24E-

C190

SAA28E-

C190

SAA30E-

C190

SAA32E-

C190

Azimuth Pattern Type   Cardioid C190
Azimuth Pattern Directivity Numerical 1.9
Elevation Pattern Type   Heavy Null Fill (type E)
Number of bays [note 1] 12 18 20 24 28 30 32
Elevation RMS Gain Numerical 12.9 18.2 20.0 23.7 27.1 28.4 29.6
Peak Gain Numerical 24.5 34.7 38.0 45.0 51.5 54.0 56.2
Peak Gain dBd 13.9 15.4 15.8 16.5 17.1 17.3 17.5

DATA FOR ANTENNAS WITH ATW-C3 PATTERN  
Antenna Model   

SAA12E-

ATW_C3

SAA18E-

ATW_C3

SAA20E-

ATW_C3

SAA24E-

ATW_C3

SAA28E-

ATW_C3

SAA30E-

ATW_C3

SAA32E-

ATW_C3

Azimuth Pattern Type   Cardioid ATW-C3
Azimuth Pattern Directivity Numerical 2.0
Elevation Pattern Type   Heavy Null Fill (type E)
Number of bays [note 1] 12 18 20 24 28 30 32
Elevation RMS Gain Numerical 12.9 18.2 20.0 23.7 27.1 28.4 29.6
Peak Gain Numerical 25.8 36.5 40.0 47.4 54.2 56.8 59.2
Peak Gain dBd 14.1 15.6 16.0 16.8 17.3 17.5 17.7
DATA FOR ANTENNAS WITH ATW-P PATTERN  
Antenna Model    SAA12E-ATW_P SAA18E-ATW_P SAA20E-ATW_P SAA24E-ATW_P SAA28E-ATW_P SAA30E-ATW_P SAA32E-ATW_P
Azimuth Pattern Type   Peanut ATW-P
Azimuth Pattern Directivity Numerical 1.7
Elevation Pattern Type   Heavy Null Fill (type E)
Number of bays [note 1] 12 18 20 24 28 30 32
Elevation RMS Gain Numerical 12.9 18.2 20.0 23.7 27.1 28.4 29.6
Peak Gain Numerical 21.9 31.0 34.0 40.3 46.1 48.3 50.3
Peak Gain dBd 13.4 14.9 15.3 16.1 16.6 16.8 17.0

DATA FOR ANTENNAS WITH ATW-P1 PATTERN  
Antenna Model    SAA12E-ATW_P1 SAA18E-ATW_P1 SAA20E-ATW_P1 SAA24E-ATW_P1 SAA28E-ATW_P1 SAA30E-ATW_P1 SAA32E-ATW_P1
Azimuth Pattern Type   Peanut ATW-P1
Azimuth Pattern Directivity Numerical 1.9
Elevation Pattern Type   Heavy Null Fill (type E)
Number of bays [note 1] 12 18 20 24 28 30 32
Elevation RMS Gain Numerical 12.9 18.2 20.0 23.7 27.1 28.4 29.6
Peak Gain Numerical 24.5 34.7 38.0 45.0 51.5 54.0 56.2
Peak Gain dBd 13.9 15.4 15.8 16.5 17.1 17.3 17.5
DATA FOR ANTENNAS WITH ATW-P3 PATTERN  
Antenna Model    SAA12E-ATW_P3 SAA18E-ATW_P3 SAA20E-ATW_P3 SAA24E-ATW_P3 SAA28E-ATW_P3 SAA30E-ATW_P3 SAA32E-ATW_P3
Azimuth Pattern Type   Peanut ATW-P3
Azimuth Pattern Directivity Numerical 2.2
Elevation Pattern Type   Heavy Null Fill (type E)
Number of bays [note 1] 12 18 20 24 28 30 32
Elevation RMS Gain Numerical 12.9 18.2 20.0 23.7 27.1 28.4 29.6
Peak Gain Numerical 28.4 40.1 44.0 52.1 59.6 62.5 65.1
Peak Gain dBd 14.5 16.0 16.4 17.2 17.8 18.0 18.1

DATA FOR ANTENNAS WITH P230 PATTERN  
Antenna Model   

SAA12E-

P230

SAA18E-

P230

SAA20E-

P230

SAA24E-

P230

SAA28E-

P230

SAA30E-

P230

SAA32E-

P230

Azimuth Pattern Type   Peanut P230
Azimuth Pattern Directivity Numerical 2.3
Elevation Pattern Type   Heavy Null Fill (type E)
Number of bays [note 1] 12 18 20 24 28 30 32
Elevation RMS Gain Numerical 12.9 18.2 20.0 23.7 27.1 28.4 29.6
Peak Gain Numerical 29.7 42.0 46.0 54.5 62.3 65.3 68.1
Peak Gain dBd 14.7 16.2 16.6 17.4 17.9 18.2 18.3
DATA FOR ANTENNAS WITH 3BP260 PATTERN  
Antenna Model    SAA12E-3BP260 SAA18E-3BP260 SAA20E-3BP260 SAA24E-3BP260 SAA28E-3BP260 SAA30E-3BP260 SAA32E-3BP260
Azimuth Pattern Type   Peanut 3BP260
Azimuth Pattern Directivity Numerical 2.6
Elevation Pattern Type   Heavy Null Fill (type E)
Number of bays [note 1] 12 18 20 24 28 30 32
Elevation RMS Gain Numerical 12.9 18.2 20.0 23.7 27.1 28.4 29.6
Peak Gain Numerical 33.5 47.4 52.0 61.6 70.5 73.8 77.0
Peak Gain dBd 15.3 16.8 17.2 17.9 18.5 18.7 18.9

DATA FOR ANTENNAS WITH T160 PATTERN  
Antenna Model   

SAA12E-

T160

SAA18E-

T160

SAA20E-

T160

SAA24E-

T160

SAA28E-

T160

SAA30E-

T160

SAA32E-

T160

Azimuth Pattern Type   Trilobe T160
Azimuth Pattern Directivity Numerical 1.6
Elevation Pattern Type   Heavy Null Fill (type E)
Number of bays [note 1] 12 18 20 24 28 30 32
Elevation RMS Gain Numerical 12.9 18.2 20.0 23.7 27.1 28.4 29.6
Peak Gain Numerical 20.6 29.2 32.0 37.9 43.4 45.4 47.4
Peak Gain dBd 13.1 14.7 15.1 15.8 16.4 16.6 16.8
DATA FOR ANTENNAS WITH T180 PATTERN  
Antenna Model   

SAA12E-

T180

SAA18E-

T180

SAA20E-

T180

SAA24E-

T180

SAA28E-

T180

SAA30E-

T180

SAA32E-

T180

Azimuth Pattern Type   Trilobe T180
Azimuth Pattern Directivity Numerical 1.8
Elevation Pattern Type   Heavy Null Fill (type E)
Number of bays [note 1] 12 18 20 24 28 30 32
Elevation RMS Gain Numerical 12.9 18.2 20.0 23.7 27.1 28.4 29.6
Peak Gain Numerical 23.2 32.8 36.0 42.7 48.8 51.1 53.3
Peak Gain dBd 13.7 15.2 15.6 16.3 16.9 17.1 17.3

DATA FOR ANTENNAS WITH ATW-T1 PATTERN  
Antenna Model   

SAA12E-

ATW_T1

SAA18E-

ATW_T1

SAA20E-

ATW_T1

SAA24E-

ATW_T1

SAA28E-

ATW_T1

SAA30E-

ATW_T1

SAA32E-

ATW_T1

Azimuth Pattern Type   Trilobe ATW-T1
Azimuth Pattern Directivity Numerical 1.8
Elevation Pattern Type   Heavy Null Fill (type E)
Number of bays [note 1] 12 18 20 24 28 30 32
Elevation RMS Gain Numerical 12.9 18.2 20.0 23.7 27.1 28.4 29.6
Peak Gain Numerical 23.2 32.8 36.0 42.7 48.8 51.1 53.3
Peak Gain dBd 13.7 15.2 15.6 16.3 16.9 17.1 17.3

DATA FOR ANTENNAS WITH ATW-T2 PATTERN

 
Antenna Model   

SAA12E-

ATW_T2

SAA18E-

ATW_T2

SAA20E-

ATW_T2

SAA24E-

ATW_T2

SAA28E-

ATW_T2

SAA30E-

ATW_T2

SAA32E-

ATW_T2

Azimuth Pattern Type   Trilobe ATW-T2
Azimuth Pattern Directivity Numerical 2.2
Elevation Pattern Type   Heavy Null Fill (type E)
Number of bays [note 1] 12 18 20 24 28 30 32
Elevation RMS Gain Numerical 12.9 18.2 20.0 23.7 27.1 28.4 29.6
Peak Gain Numerical 28.4 40.1 44.0 52.1 59.6 62.5 65.1
Peak Gain dBd 14.5 16.0 16.4 17.2 17.8 18.0 18.1

Model Dimensions - Top Mounted

 
Antenna Model   SAA12 SAA18 SAA20 SAA24 SAA28 SAA30 SAA32
Height m (ft) [note2 & 3] 7.9 (25.9) 11.2 (36.7) 12.3 (40.3) 14.5 (47.6) 16.7 (54.8) 17.8 (58.4) 18.9 (62.0)
COR from base of antenna m (ft) [note2] 4.3 (14.0) 5.6 (18.4) 6.1 (20.2) 7.2 (23.8) 8.3 (27.4) 8.9 (29.2) 9.5 (31.0)
Weight kg (lb) [note2] 848 (1868) 1628 (3588) 1991 (4388) 2768 (6101) 3603 (7940) 4706 (10372) 5042 (11112)
Effective Area CaAc (no ice)

m sq. (ft sq.) [note4]

2.0 (21.9) 3.2 (34.9) 3.6 (38.3) 4.6 (49.9) 5.3 (57.5) 5.7 (61.3) 6.0 (65.1)

External Document Links

Antenna Selection Tool: Download

Notes

Note 1: Other numbers of bays available on request. Contact RFS or consult the RFS Antenna Analysis and Selection Tool

Note 2: For channel 25 and standard wind conditions. Refer to AAST tool for specific channel data.  Contact RFS if the location is in a high wind area

Note 3: Does Not Include Lightning Arrestor

Note 4: Design Parameters in accordance with TIA-222-G are:

  • 160 kmh (100 mph) Basic Wind Speed with no ice
  • Structure Class II
  • Topographic category 1, Exposure category C
  • Interface steelwork to tower not included in calculations.

Note 5: Other Beam-tilts available on request