先科车载长波天线AM/FM有源信号放大器

评测依据

• review_count：15000
• rating_avg：4.5
• brand_reputation：0
• merchant_count：0
• price_range：[0,99]
• dimension：best_quality
• sources：["京东","天猫","苏宁易购"]
• time_range：{"from":"2026-06-26 02:11:14","to":"2026-06-26 02:11:14"}
• intros：{"brand_intro":"先科是成立于1984年的老牌电子企业，在影音、家电领域积淀深厚。其车载天线产品线成熟，以稳定可靠著称。先科拥有完善的售后网络和较高的品牌认知度，产品覆盖从入门到专业级，是许多车主升级原车天线的首选品牌之一。","product_intro":"SA-868是一款经典有源长波天线，采用分离式放大器设计，可独立安装于隐蔽位置。内置高增益放大芯片，对长波弱信号有显著增强效果。支持12V供电，带电源指示灯。天线主体为不锈钢材质，抗腐蚀。附赠延长线，适配各种车型安装需求。","key_specs":["频率范围：150kHz-30MHz（长波/中波）","增益：22dB","工作电压：12V DC","电流：<50mA","天线长度：40cm","接口：BNC/通用型"]}
• alt_products：[{"product_name":"先科车载长波天线AM/FM有源信号放大器","brand":"先科","model":"SA-868","price":89},{"product_name":"华仕车载长波天线AM/FM有源放大天线","brand":"华仕","model":"HS-668","price":68},{"product_name":"纽曼车载长波天线AM/FM有源隐藏式天线","brand":"纽曼","model":"NM-ANT01","price":79}]
• kol_quotes：["太平洋汽车网评测：先科SA-868长波接收性能在同价位中表现突出。","电台发烧友论坛：经典款，长波爱好者入门推荐。"]
• scoring_breakdown：[{"source":"word_of_mouth","score":88.8,"weight":0.2,"confidence":0.8,"details":{"source":"word_of_mouth_scores","summary":"用户普遍认可其长波接收能力，尤其对远距离中波电台改善明显。分离式放大器设计便于隐藏，不破坏内饰美观。做工扎实，不锈钢材质耐用。部分用户反映安装时需注意放大器防水。整体性价比高，先科品牌口碑加持，复购率较高。","source_count":3}},{"source":"objective","score":89.52000000000001,"weight":0.5,"confidence":0.8,"details":{"rating_avg":4.5,"review_count":15000,"wom_score":88.8}},{"source":"user_review","score":90,"weight":0.15,"confidence":1,"details":{"rating_avg":4.5,"review_count":15000,"source":"product_reviews_aggregate"}},{"source":"expert","score":80.80000000000001,"weight":0.15,"confidence":0.6,"details":{"kol_count":2,"scored_count":2,"matched_count":2,"base_score":82,"weighted_score":80,"sample":["太平洋汽车网评测：先科SA-868长波接收性能在同价位中表现突出。","电台发烧友论坛：经典款，长波爱好者入门推荐。"]}}]
• method_version：v3
• search_visual：null