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6PPXX271E SERIES
Band IV/V (UHF) PeakPower+TM 30kW bandpass filter

The RFS 6PPXX271E is designed for mask filtering application associated with DTV television transmission. It is a 6-pole liquid cooled filter incorporating dual cross couplings to meet the mask requirements. Natural air cooled and fan cooled options are also available.

FEATURES / BENEFITS

  • Very compact for easy integration into equipment.
  • Lowest insertion loss and highest power rating for its size/class.
  • Tunable over UHF band (470 – 704 MHz).
  • Adjustable bandwidth, available for 6 and 8 MHz channels for global applications.
  • External coupling adjustments simplifies tuning.
  • All data presented upon field measured results.


6PPXX271E Liquid Cooled Filter

Technical features

General Specifications

Product LineFilters
Product TypeBand IV/V (UHF) TV Bandpass Filter
Model6PPXX271E
Filter type6 Pole with dual cross coupling - 270 mm ground plane spacing - Liquid cooled
Input / Output Connector3-1/8" to 6-1/8" Unflanged and Flanged Female Connectors Are Available

Electrical Specifications

ImpedanceΩ50

Mechanical Specifications

Weight kg (lb)124 (273)

Cooling

CoolingLiquid Cooled
Flow Ratel/min3 ≤ rate ≤ 12 (1 ≤ rate ≤ 4 US gal.min)
Max. Propylene Glycol / Water Concentration %50

Specifications

Out-of-Band Emissions MaskDVB-T ETSI non-critical *Note 1ISDB-T Critical *Note 1ATSC 1.0/ ATSC 3.0 *Note 1
Channel Bandwidths MHz866
Frequency RangeMHz470 - 704
Input Power Rating, KWkW26.5 @ 474MHz
28.5 @ 586MHz
32 @ 698MHz 		24 @ 473MHz
22 @ 587MHz
25 @ 701MHz		30/24 @ 473MHz
30/25 @ 587MHz
30/26.5 @ 701MHz
*Note 2
Insertion Loss at FcdB<0.19@ 474MHz
<0.21 @ 586MHz
<0.19 @ 698MHz		<0.27 @ 473MHz
<0.3 @ 587MHz
<0.27 @ 701MHz		<0.26 @ 473MHz
<0.28 @ 587MHz
<0.26 @ 701MHz
AttenuationdB<0.65 ± 3.8MHz
>4.2 ± 4.2MHz
>26 ± 6MHz
>41 ± 12MHz		<1.1 ± 2.79MHz
>11 ± 3.15MHz
>26 ± 4.5MHz
>53 ± 9MHz		<0.5 ± 2.69MHz
<0.6 ± 2.915MHz
>3 ± 3.5MHz
>40 ± 6MHz
>65 ± 9MHz
*Note 3
VSWR average across carriers≤1.12≤1.2≤1.1
Return Loss Average Across CarriersdB≥25≥20.8≥26.4
Group Delay Variationns<295 (fc ± 3.8 MHz)<585 (fc ± 2.79 MHz)<150 (fc ± 2.69 MHz)
Maximum Operating Temperature°C (°F)80 (176)
Ambient Temperature Range°C (°F)-5 to 55 (23 to 131) *Note 2
Maximum Temperature Rise°C (°F)Δ40 (Δ72)
Freq Drift - Tx OperationkHz/°C(°F)<2 (1.2)
Freq Drift - Ambient TemperaturekHz/°C(°F)<2 (1.2)


6PPXX271E Plan and Side View


6PPXX271E Iso View


Graph 1 - 6PPXX270/271E Typical Filter Response


Graph 2 - Coolant (Liquid Cooled) Temperature [°C(°F)]

Notes

  • Note 1. Other out-of-band emissions masks upon request.
  • Note 2. >25kW input power for ATSC 1.0 only. Refer to Graph 2 for required cooling conditions.
  • Note 3. TX intermod shoulders 37 dB.