Band-pass filter band 4/5 DTV/ATV 8.5 kW 3 1/8" EIA product photo Front View L
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Band-pass filter band 4/5 DTV/ATV 8.5 kW 3 1/8" EIA


SPINNER Filters offer reliability, performance, and value

Radio Frequency (RF) filters are crucial components in mobile communication and broadcast networks. Their primary function is to selectively allow signals of certain frequencies to pass while blocking others, thereby managing interference and enhancing the clarity and quality of the transmission. Applications include cellular base stations, broadcasting, and other RF communication systems.

Critical Characteristics and Success Factors:

  • Selectivity: The ability to precisely isolate specific frequency bands.
  • Insertion Loss: Minimal loss of signal strength through the filter.
  • Power Handling: Capability to manage the power level of the signal without degradation.
  • Durability: Performance consistency over a range of environmental conditions.

The Band-pass filter band 4/5 DTV/ATV 8.5 kW 3 1/8" EIA ensures optimal performance for signal transmission between transmitter and antenna in broadcast stations.

Band-pass filters are critical in systems that need to isolate and transmit a defined range of frequencies, such as in specific communication channels in mobile networks or distinct broadcast frequencies.

The Band-pass filter band 4/5 DTV/ATV 8.5 kW 3 1/8" EIA is cooled passively by convection i.e. the heat dissipation via the cooling fins. Due to the flexible mounting options, optimum air circulation and thus cooling can be achieved.

It supports the use of the following frequency bands : Band 4/5

The positive characteristics are briefly summarised: mask filters for DTV and ATV, for 6, 7 and 8 MHz channel bandwidth, with cross coupling (notch function), tunable within the whole UHF range, temperature compensated, installation horizontally or vertically, DC block, natural cooling.

Coaxial flange connectors, generally known as “EIA flanges”, are connected by a coupling element. The flange connector system complies with international standards EIA STD RS-225, 339 IEC, DIN EN 122150 and MIL-F 24044. The EIA flange connectors are excellently qualified suited for pressurized systems and for outdoor installations. 3 1/8" EIA connectors are used to link two elements of a rigid or semi-rigid high performance coaxial transmission line for radio frequency signals. Typically, these are operated in systems for very high power transmission (from kW to MW), e.g. in DAB, DVB or FM broadcast systems or in high-energy applications in research facilities (particle accelerator, plasmatron).

Our RF filters are engineered with precision, offering exceptional selectivity and low insertion loss, which are critical for efficient RF communication. Our range includes filters designed for various specific applications, ensuring that whatever your needs, we have a filter that fits. With robust construction, our filters maintain performance across a broad range of environmental conditions, making them ideal for both mobile communication and broadcast networks.

Our unique approach to RF filter design combines innovative technology with practical application insights, resulting in products that not only meet but exceed industry standards. For anyone involved in the construction or operations of RF mobile communication or broadcast networks, our filters offer reliability, performance, and value.

RF characteristics

Number of interfaces:
Interface type:
3 1/8" EIA (50 Ω) per IEC 60339-2
Interface direction:
Filter type:
Number of cavities:
Size of cavities:
Broadcast transmission type:
Frequency range:
470 to 790 MHz
Frequency band:
Band 4/5
Average power rating:
8.5 kW
Tuning instruction:
VSWR, max.:
1.15 (passband)
Harmonics insertion loss:
≥ 50 dB for f ≤ 800 MHz
Temperature stability:
≤ 2 kHz / K

Mechanical characteristics

Cooling type:
Weight, approx.:
55.0 kg
804.0 mm
570.0 mm
352.0 mm

Environmental conditions

Environmental conditions:
for limitations see "Environmental Conditions for Broadcast Products" TD-00060

Further remarks

• mask filters for DTV and ATV
• for 6, 7 and 8 MHz channel bandwidth
• with cross coupling (notch function)
• tunable within the whole UHF range
• temperature compensated
• installation horizontally or vertically
• DC block
• natural cooling
Alternative tuning on request
Customs tariff number:



Product data sheet – 616669C1043 – CB-L-132-DS.pdf