{"product_id":"blake-masthead-a-b-combiner-dc-blacom21ab","title":"BLAKE Masthead A\/B Combiner DC","description":"\u003cp\u003e\u003cstrong\u003eBLAKE Masthead A\/B Combiner DC\u003c\/strong\u003e — Switchable DC on Both Legs. Product code: BLACOM21AB.\u003c\/p\u003e\u003ch2\u003eProduct information\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCombines Group A \u0026amp; B signals\u003c\/li\u003e\n\u003cli\u003eTriple filtered to block 4G, 5G, and TETRA\u003c\/li\u003e\n\u003cli\u003eWeatherproof build\u003c\/li\u003e\n\u003cli\u003eSwitchable power pass\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe BLACOM21AB is a high-performance A\/B masthead combiner designed to merge TV signals from Group A (470–606MHz) and Group B (616–694MHz) transmitters. Triple filtered to minimise interference from TETRA, 4G, and 5G signals, it helps maintain clear and reliable reception.\u003c\/p\u003e\u003cp\u003eThis unit is ideal for use in areas where both Group A and Group B transmitters are needed. By combining signals from two aerials into one, it removes the need for multiple systems and allows access to a broader range of channels. It supports masthead amplifiers with a switchable power pass on both legs and offers low signal loss of just 2dB within each group.\u003c\/p\u003e\u003cp\u003eBuilt for outdoor use, the housing features a weatherproof design with foam-sealed cable glands, a 90° wide-opening door, and an earth tag. F-type connectors ensure stable signal transmission, and the included mounting options support both mast and wall installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCombines Group A and Group B signals (470–606MHz and 616–694MHz)\u003c\/li\u003e\n\u003cli\u003eTriple filtered design to reduce TETRA, 4G, and 5G interference\u003c\/li\u003e\n\u003cli\u003eSwitchable power pass on both legs for masthead amplifier support\u003c\/li\u003e\n\u003cli\u003eLow signal loss: Minimum 2dB across Group A and B frequencies\u003c\/li\u003e\n\u003cli\u003eHigh out-of-band rejection: 45dB attenuation above 702MHz\u003c\/li\u003e\n\u003cli\u003eWeatherproof enclosure with sealed glands and earth tag\u003c\/li\u003e\n\u003cli\u003eF-type connectors for secure and reliable connections\u003c\/li\u003e\n\u003cli\u003eFlexible mounting: Compatible with mast and wall installations\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe BLACOM21AB is suited to installations in areas with overlapping transmitter coverage. It allows for a simplified setup using two aerials to receive a full range of TV channels across both groups. By combining signals into a single feed, it reduces equipment and supports consistent reception in complex broadcast environments.\u003c\/p\u003e\n                ","brand":"BLAKE","offers":[{"title":"Default Title","offer_id":68237355745584,"sku":"BLACOM21AB_3F02","price":13.48,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/8162\/1040\/files\/image-1-25.jpg?v=1793621119","url":"https:\/\/freesatspares.co.uk\/products\/blake-masthead-a-b-combiner-dc-blacom21ab","provider":"Freesat Spares","version":"1.0","type":"link"}