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8PPXX270E SERIES
Band IV/V (UHF) PeakPower+TM 15kW bandpass filter

The RFS 8PPXX270E is designed for global filtering applications associated with DTV television transmission. It is an 8-pole natural air-cooled filter incorporating two cross couplings to meet all mask requirements.  The 8-pole filter allows for FCC tightening of emission mask in ATSC3.0

FEATURES / BENEFITS

  • Very compact for easy integration into equipment.
  • Very low insertion loss (lowest for this size).
  • Highest power rating for size/class.
  • Tunable over UHF band (470 – 704 MHz)
  • Adjustable bandwidth, available for 6 and 8 MHz channels for global applications. External coupling adjustment simplifies tuning.
  • -5 to 55 degree C ambient temperature operation.
  • All data presented based on measured results.


8PPXX270E Filter

Technical features

General Specifications

Product LineFilters
Product TypeBand IV/V (UHF) TV Bandpass Filter
Model8PPXX270E
Filter type8 Pole with 2 cross couplings - 270 mm ground plane spacing
Input / Output Connector4-1/2" IEC Unflanged Female (Standard) or 4-7/8" IEC Flanged Female or
6-1/8" EIA Flanged Female (Optional) or 4-1/16" Flanged MYAT (Optional)

Electrical Specifications

ImpedanceΩ50

Mechanical Specifications

Weight kg (lb)150 (331)

Specifications

Out-of-Band Emissions MaskDVB-T ETSI criticalDVB-T ETSI criticalISDB-T criticalATSC 1.0/ATSC 3.0
Channel Bandwidths MHz8666
Frequency RangeMHz474-698473-701473-701473-701
Input Power RatingkW14.9 @ 474 MHz
13.9 @ 698 MHz
10.9 @ 473MHz
9.9 @ 701MHz
10.9 @ 473MHz
9.9 @ 701MHz
12.9 @ 473MHz
11.8 @ 701MHz
Insertion Loss at fcdB<0.24 @ 474 MHz
<0.26 @ 698 MHz
<0.33 @ 473 MHz
<0.35 @ 701 MHz
<0.33 @ 473 MHz
<0.35 @ 701 MHz
<0.31 @ 473 MHz
<0.33 @ 701 MHz
AttenuationdB<1.20 at Fc ± 3.8 MHz
>15.0 at Fc ± 4.2 MHz
>27.0 at Fc ± 6.0 MHz
>52.0 at Fc ± 12.0 MHz
<1.50 at Fc ± 2.85 MHz
>15.0 at Fc ± 3.15 MHz
>27.0 at Fc ± 4.5 MHz
>52.0 at Fc ± 9.0 MHz
<1.30 at Fc ± 2.79 MHz
>14.0 at Fc ± 3.15 MHz
>31.0 at Fc ± 4.5 MHz
>61.0 at Fc ± 9.0 MHz
<0.7 at Fc ± 2.69 MHz <0.9 at Fc ± 2.915 MHz
>20 at Fc ± 3.5 MHz
>20 at Fc ± 4 MHz
>40 at Fc ± 6 MHz
>65 at Fc±9 MHz
Note 1
VSWR average across carriers≤1.1
Return Loss Average Across CarriersdB≥26.4
Group Delay Variationns<590 at Fc ± 3.8 MHz<690 at Fc ± 2.85 MHz<590 at Fc ± 2.79 MHz<290 at Fc ± 2.69 MHz
Maximum Operating Temperature°C (°F)80 (176)
Ambient Temperature Range°C (°F)-5 to 55 (23 to 131)
Maximum Temperature Rise°C (°F)40 (104)
Freq Drift - Ambient TemperaturekHz/°C(°F)<2 (1.2)


8PPXX271E Filter views, water cooled option shown


8PPXX271E Iso View, water cooled option shown


Graph 1 - 8PPXX270/271E Filter Typical Response