Radio Frequency Systems company website is optimized for recent browsers :
IE9+, Chrome 31+, Firefox 31+, Opera 28+, Safari 7+

My e-catalog

FM Sidemount Antennas
828MPDA Series

Rev : 01 | Rev date : 22 Jan 2015
The 828DA series of FM side mount antennas are designed for FM broadcasting applications which require circular polarization and low wind loads.
 These Band II antennas have a nominal gain of -1dBd per plane of polarization and are fitted with a horizontal reflecting element to provide some improvement in the directionality of the horizontal radiation pattern.
 The stainless steel design ensures that the antenna will give years of trouble free performance in the most hostile environments. The higher power series are pressurized to add further environmental protection.
 Elements will tolerate a degree of light icing but for more severe environments, radomes are available. Contact RFS for details.
 All 828DA series antennas can be arrayed in any number of levels to suit most applications. The parallel feed system facilitates the customization of null fill and beam tilt to suit customer requirements.
 The standard 828DA antenna series is for high power applications; for medium power select the 828MPDA series.
 Both series have 3 models designed for bandwidth of 10MHz. Additional factory tuning is available to achieve superior return loss specifications.
 A wideband series of the 828DA antenna, the 828HPDA covers the entire FM band from 88 to 108MHz and utilizes half wavelength spacing. The 828HPDA series antennas are high power arrays.
 The wide variety of possible configurations ensures that this antenna range meets the needs of most users on both price and performance.


  • Directional horizontal radiation pattern
  • Low downward radiation
  • Rugged stainless steel construction for maximum corrosion protection
  • Various power ratings available
  • Mixed polarization
  • Broadband operation to facilitate antenna sharing
  • 828DA and 828HPDA models pressurized
  • 828MPDA series designed specifically for un-pressurized operation
  • Optional optimal array tuning
  • Low windload to minimize tower or mast costs
  • Radomes are an available option for all 828DA series
  • Temperature range -40 to +60 degrees C available.

Technical features


Product LineAntenna TV
Product TypeBand II (VHF) 828MP-6DA FM Sidemount Antennas

Electrical Specifications

Frequency Range MHz88 - 108
Operating Frequency Ranges MHz88 - 98
94 - 104
98 - 108
Gain per Plane of Polarization dBd7.32
Return Loss dB20 Note 1
Power Rating kW10.5
Input/Power Rating CommentPower ratings are for single input models. Dual input cavity versions can provide higher power ratings. Contact RFS for details. Connector types and impedance may be varied to suit customer requirements, contact RFS for details.
Impedance (unbalanced) Ω50

Mechanical Specifications

Number of Levels6
Input ConnectorSingle element 7-16 DIN
Array 7-16 DIN
7/8" EIA
1-5/8" EIA
Mounting (Standard) mm (in)Brackets for 60mm (2-3/8") pole mount
Effective Area Front (full antenna) No Ice m² (ft²)0.05 (0.54) Single Bay
Effective Area Front (full antenna) with 12.5mm(0.5") Radial Ice m² (ft²)0.05 (0.54) Single Bay
Effective Area Side (full antenna) No Ice m² (ft²)0.19 (2.04) Single Bay
Effective Area Side (full antenna) 12.5mm (0.5") Radial Ice m² (ft²)0.19 (2.04) Single Bay
Weight kg (lb)12 (27) Single Bay

Packaging Information

Shipping Weight, Kg (lb)kg (lb)12 ()

Horizontal Radiation Pattern for Combined Horizontal and Vertical Polarisation

External Document Links


Note 1 Arrays are factory tuned for a broadband performance and a return loss of 20dB across the specified bandwidth is achieved. Optional factory tuning for optimum narrow band performance will achieve a 30dB return loss over +/- 1MHz from the specified frequency. Arrays may be supplied un-tuned with a resulting return loss of 14dB.
Note 2 Array power ratings are limited by the radiator and power divider input connectors used. Typical limits are : 7-16 DIN 3.5kW, 7/8"" EIA 5kW, 1-5/8"" EIA 10kW and 3-1/8"" EIA 40kW.
Note 3 Mechanical specifications: For 828MPDA and 828DA the single bay Effective Area Front is 0.05 sq m (0.54 sq ft), Effective Area Side is 0.19 sq m (2.04 sq ft). For 828HPDA, single bay Effective Area Front is 0.06 sq m (0.65 sq ft), Effective Area Side is 0.25 sq m (2.35 sq ft).