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Masthead A/B Combiner With Switchable Power-Pass on Both Legs
Product Code: BLACOM21AB
- Combines Group A & B signals
- Triple filtered to block 4G, 5G, and TETRA
- Weatherproof build
- Switchable power pass
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Product Description
Masthead A/B Combiner With Switchable Power-Pass on Both Legs
The 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.
This 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.
Built 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.
The 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.
Technical Specification
Weight
0.25kg
15/04/2025
05/03/2025
Super
28/02/2025
First class website and easy to navigate when buying items from Blake UK. Was emailed every step for reassurance regarding my on-line order for a stress free purchase. Will definitely be doing another on-line order from Blake UK regarding a TV ariel along with a loft bracket as I will be buying a loft Ariel in a few months time for my home. 💯% satisfied with my order 👍
25/02/2025
I’m pleased with the ærial overall. I did have to fix two separate issues though… 1. Many of the elements were bent, some quite badly. Happily they all bent straight again without any fatigue fracture. 2. Many of the elements were not seated properly in the booms. In one case, a vertical element was touching one on the other boom. I was able to pull the unseated ones out to seat better but I’m not sure how long they’ll stay like this.
11/02/2025
Amazingly quick de.ivery. Ordered at the weekend , arrived on Monday !
Google Company Reviews
08/06/2025
First time to order from Blake UK. You won't be disappointed ordered to N.I. great customer service and updates on delivery status. Family business and great follow-up with customers. Do not hesitate to order from Blake.
30/05/2025
Quick delivery- great value for money - perfect description of product
25/05/2025
Absolutely amazing service, fast delivery and well packaged. perfect hardware for mounting my radio antenna.
10/05/2025
Blake UK provide an outstanding service. We recently moved into a new home and the existing TV signal reception was limited to a few flaky channels. I have never faced an issue like this before and wasn't sure if our smart TV, cabling or aerial were at fault. Rhys and the comprehensive information on the Blake UK website (including directional data for my nearest transmitter) resolved the problem very fast. A new and specific aerial, mast pole, clamps and instructions were efficiently dispatched and received the following day. I now have 844 channels! I should mention that during the installation the option to check signal strength and clarity on a Sony Bravia TV can be found in the 'Settings / Help / Signal Diagnostics' menu section.
05/05/2025
Good product, very reasonably priced and quick delivery.
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I was looking for some roof hardware and found what I needed at Blake at a competitive price. I'm glad I bought through them because the transaction was simple and the delivery lightning fast. Received what I ordered on time and happy with the quality. So definitely will use them again.