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4PXW
Band IV/V (UHF) Waveguide bandpass filter

The RFS 4PXW filter is a 4-pole band-pass filter with single cross-coupling, which can be used for ISDB-T mask filtering applications or in a TV channel combiner with non-adjacent channels, where very low insertion loss is required.

 

FEATURES / BENEFITS

  • Very compact for easy integration into equipment.
  • Very low insertion loss (lowest for this size).
  • Highest power rating for size/class.
  • Adjustable bandwidth, available for 6, 7 & 8 MHz channels.
  • -5 to 55 degree ambient temperature operation.
  • Input and output options: same or opposite sides
  • Tuneable elbows options extra


4PXW filter

Technical features

General Specifications

Product LineFilters
Product TypeBand IV/V (UHF) TV Bandpass Filter
Model4PXW
Filter type4 pole with single cross coupling

Mechanical Specifications

Input / Output Connector1-5/8", 3-1/8" EIA Flanged/Unflanged Female (Standard) or
4-1/16" EIA, 4-7/8" IEC Flanged/Unflanged Female (Optional)
Dimension-WxDxH mm (in)612 x 540 x 973 (24.1 x 21.3 x 38.2) varies with channel
Weight kg (lb)42 (93)

Cooling

CoolingConvection cooled

Electrical Specifications

Out-of-Band Emissions MaskISDB-TNo MaskNo Mask
Channel Bandwidths MHz668
Input Power RatingkW27.0 @ 473MHz
22.5 @ 587MHz
18.0 @ 701MHz
30/30 @ 473MHz
25/25 @ 605MHz
20/20 @ 701MHz
40.0 @ 474MHz
34.0 @ 586MHz
28.0 @ 698MHz
Insertion Loss at fcdB<0.1 @ 473MHz
<0.1 @ 605MHz
<0.12 @ 701MHz
<0.1 @ 473MHz
<0.1 @ 605MHz
<0.12 @ 701MHz
<0.1 @ 474MHz
<0.1 @ 586MHz
<0.12 @ 698MHz
Attenuation dB<0.17 @fc±2.79MHz <608MHz
<0.19 @fc±2.79MHz <704MHz
>5 @ fc ± 4.0 MHz
> 15 @ fc ± 4.36 MHz
> 15 @ fc ± 9.0 MHz
> 30 @ fc ± 9.0MHz> 30 @ fc ± 12 MHz
VSWR average across carriers< 1.13< 1.1< 1.1
Return Loss Average Across Carriers dB2426.426.4
Group Delay Variation ns< 100 ± 2.79 MHz< 29 ± 2.69 MHz
< 33 ± 2.79 MHz
< 20 ± 3.8 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 - Tx OperationkHz/°C(°F)<1 (0.6)

External Document Links

Notes

Note: Filter dimensions and weight varies by channel.