3-way manifold combiner band 4/5 DTV 750 W NB input


SPINNER Combining Units for best radio frequency networks performance

Combining units are essential components in radio frequency networks, used to merge signals from multiple sources or split signals into multiple paths while maintaining signal integrity. All combiners work in bi-directional mode and can therefore be used to combine and split the transmitted and received signals.

The 3-way manifold combiner band 4/5 DTV 750 W NB input ensures optimal performance for signal transmission between transmitter and antenna in broadcast stations.

A manifold combiner is a device designed to combine multiple input signals into a single output. This is particularly useful in environments where space efficiency and signal integrity are paramount. Manifold combiners are used to streamline the handling of signals from different sources, facilitating a cleaner and more efficient distribution of signals within the network infrastructure. This makes them essential for complex systems where multiple channels need to be managed effectively and without interference.

Manifold combiners are usually designed as 2- or 3-way combiners and require a minimum spacing of one channel or one DAB block in between.

SPINNER’s Manifold Combiners excel in reliability, performance, and adaptability. Our products are recommended because they provide a flexible solution for both indoor and outdoor mobile communication networks. Whether enhancing in-

building coverage or expanding network capacity, SPINNER’s Manifold Combiners offer a reliable backbone for seamless wireless communication.

Transmitters can be isolated from each other by connecting a bandpass filter to each output. To achieve good matching for the operating channels, the outputs of these filters must be connected via a suitable matching network.

Frequency changes or extensions are difficult to accomplish with combiners of these kinds because the matching networks have to be optimized for the new frequencies.

Outstanding RF characteristics, best possible passive intermodulation and VSWR

The 3-way manifold combiner band 4/5 DTV 750 W NB input enables you to transmit high-frequency signals reliably and flawlessly with optimum protection of your sensitive equipment in a power range up to 750 W (per input for non-adjacent channels), 600 W (per input for adjacent channels) with maximum passive intermodulation (IM3).

The port path designation regarding main line and probe is as follows: Port 1, 2, 3: narrow band input, Port 4: output,

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

The positive characteristics are briefly summarised: compact design as 19" slide-in unit, integrated mask filters for DTV, applicable within the whole UHF range, for 6, 7 and 8 MHz channel bandwidth, temperature compensated.

The 7-16 connector has become the most widely used coaxial connection system for mobile communication systems, due to its excellent mechanical and electrical properties. In order to achieve the industry leading intermodulation performance SPINNER applies silver-plating on all inner and outer conductor parts of the standard connector. As a supporting measure, we use exclusively non-magnetic materials, and we have minimized the number of RF contact points. The connection is especially suited for transmitting medium or high power indoors and outdoors.

The product offers a transition from interface 7-16 female to interface 7-16 female.

RF characteristics

Number of interfaces:
Interface type:
7-16 female (50 Ω) per IEC 61169-4
7-16 female (50 Ω) per IEC 61169-4
7-16 female (50 Ω) per IEC 61169-4
1 5/8" SMS clamp (50 Ω)
Port / path designation:
Port 1, 2, 3: narrow band input
Port 4: output
Interface direction:
Input : output ratio:
3 : 1
Combiner type:
Number of cavities:
Size of cavities:
Broadcast transmission type:
Frequency range:
470 to 860 MHz
Frequency band:
Band 4/5
Average power rating:
750 W (per input for non-adjacent channels)
600 W (per input for adjacent channels)
Tuning instruction:
VSWR, max.:
1.2 (for adjacent channels)
Harmonics insertion loss:
≥ 50 dB for f ≤ 950 MHz
Isolation, min.:
35 dB (between inputs; for adjacent channels: ≥ 26 dBrms in channel and 12 dB at adjacent channel slopes)
Temperature stability:
≤ 2 kHz / K

Mechanical characteristics

Cooling type:
Weight, approx.:
38.0 kg
640.0 mm
483.0 mm
532.0 mm
Dimensions remark:

Environmental conditions

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

Further remarks

• compact design as 19" slide-in unit
• integrated mask filters for DTV
• applicable within the whole UHF range
• for 6, 7 and 8 MHz channel bandwidth
• temperature compensated
for non-adjacent channels
Alternative tuning on request
Customs tariff number:



Product data sheet – 574913C0003 – CB-L-61-DS.pdf