I. Core Technical Parameters and Broadcast Industry Standards

　　Frequency Coverage: Dedicated distributors for broadcast systems must be compatible with the full frequency band of cable television, with a mainstream range of 5-1000MHz (compatible with analog/digital signals). High-end models can be expanded to 3000MHz (such as the Evertz SRF series) to meet the requirements of 4K ultra-high-definition signal transmission. FM broadcast synchronization systems need to be compatible with the 87-108MHz frequency band.

　　Key Performance Indicators

　　Parameters

　　Broadcast Grade Requirements

　　Typical Product Examples

　　Insertion Loss

　　≤15dB (including 12dB theoretical distributed loss)

　　Evertz SRF-1x16: 14±1dB

　　Isolation

　　≥20dB (550-1000MHz)

　　Chengdu Weitong WT-D0318-16: ≥18dB

　　VSWR

　　≤1.5:1

　　All broadcast-certified products meet this requirement

　　Shielding Attenuation

　　≥100dB (interference immunity)

　　Blonder-Tongue SDS-16: -120dB RFI

　　Structural Specifications

　　Interfaces: Standard metric F-type interface (for cable TV only), some rack-mount products support BNC interface.

　　Protection: Outdoor models use die-cast aluminum alloy housing (IP65 waterproof rating), built-in high-voltage isolation capacitor and surge protection module (6KV ESD protection).

　　II. Mainstream Brands and Benchmark Products

　　(I) Domestic Broadcast-Grade Solutions

　　Fiberhome FDT-7000 Series

　　Market share: 23.5%, won bids in multiple provincial broadcasting tenders, isolation ≥25dB, insertion loss ≤14dB, suitable for smart broadcasting rural projects.

　　Huawei HGC-2100 Optoelectronic Composite Splitter

　　Supports 8-channel RF + 2-channel GPON access, reducing cabling complexity, already deployed in batches in Jiangsu and Sichuan broadcasting networks.

　　Vibey 16-Channel Splitter

　　Economical option (unit price approximately 60 RMB), frequency 5-1000MHz, suitable for distribution at the end of county-level broadcasting networks.

　　(II) International Professional Models

　　Evertz SRF-1x16 Series

　　Rack-mount design (1U height), frequency 200-3000MHz, isolation > 55dB, supports signal monitoring ports, suitable for large studio systems.

　　Blonder-Tongue SDS-16: Zinc alloy corrosion-resistant housing, insertion loss ≤15dB, compatible with satellite reception and terrestrial broadcast signals, unit price $26.26.

　　BBT Line V1: Wideband 500MHz-7GHz, power capacity 20W, uses patented non-Wilkinson structure, suitable for high-frequency broadcast transmission testing.

　　III. Key Selection Considerations

　　Scenario Adaptability

　　Trunking Distribution: Prioritize Fiberhome FDT-7000 (high isolation) or Evertz SRF series (wideband);

　　End-point Deployment: Visby 16-channel splitter (high cost-performance ratio);

　　Outdoor Deployment: Requires surge protection module (such as Saiyue Communication power divider) and waterproof housing.

　　Signal Compensation Solutions

　　16-channel distribution loss reaches 12-15dB, requiring a preamplifier:

　　Integrated Solution: Vision UB30216ES (with 350MHz amplification and noise reduction);

　　Split Solution: Paired with Huawei UPA series trunk amplifiers (gain 20-30dB).

　　Certification and Compliance

　　Domestic applications must comply with the "Technical Standard for Cable Television Branch Distributors" (5-1000MHz, F-type interface). International projects prioritize RoHS/REACH certified products (such as Pasternack and Evertz).

　　IV. Industry Applications and Policy Background

　　Policy-Driven: In 2024, the second phase of the Smart Broadband Rural Project allocated 1.994 billion yuan for distributor procurement, focusing on supporting equipment upgrades in the central and western regions, driving order growth of over 40% for Hengtong Optic-Electric and Fiberhome Communications.

　　Typical scenarios: Provincial-level cable TV trunk lines: A distributed transmission network is built using Evertz SRF-1x16 + Huawei amplifiers; County-level cable TV networks: "Fiber to the home" transformation is achieved using Visby 16-channel splitters + Fiberhome optical receivers.

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