Quick Add
Masthead Diplexer DAB/FM VHF & TV UHF Triple filtered @70dB
Product Code: BLACOM21VU
- Combines VHF (85–230MHz) and UHF (470–694MHz)
- Triple filtered to block 4G, 5G, and TETRA
- UHF port supports DC pass (12V/100mA)
- Compact, fully screened and easy to mount
_Exterior.png){kind=small}
_Exterior.png)
Payment methods accepted
Product Description
Triple Filtered VHF/UHF Diplexer with DC Pass
The BLACOM21VU is a masthead diplexer designed to combine and separate signals across VHF (85–230MHz) and UHF (470–694MHz) frequency bands. Triple filtered to block out 5G, 4G, and TETRA interference, it supports clear signal delivery for installations requiring both DAB/FM and TV UHF signals.
Built with fully screened construction, this unit offers low insertion loss and strong return loss performance, maintaining signal strength and reducing unwanted reflections. The UHF port features DC power pass (12V/100mA), allowing support for masthead amplifiers or external devices. It is compatible with coax and fibre IRS systems and is optimised for use as the fifth cable in 5-core IRS setups.
The compact housing includes F-type connectors, wall mounting lugs, foam-sealed cable entry glands, and a 90° wide-opening door for simple installation. An earth tag is also provided for system equipotential bonding where required.
Features:
Applications
The BLACOM21VU is ideal for combining TV and DAB/FM signals onto a single drop cable, particularly in IRS systems using a 5-core setup. Compatible with any UHF aerial and recommended for use with the Blake DFMO antenna, it simplifies signal routing in both coaxial and fibre IRS environments.
Technical Specification
Weight
0.25kg
02/03/2026
25/02/2026
Only complaint poor parcel parking of items , surprised had not lost anything in transit
08/02/2026
Great product range, rapid attention to order and fast delivery. What more does one need!
01/02/2026
Great tech support lead to an order which was prepared for dispatch within an hour and was delivered with impressive speed.
31/01/2026
Very easy to order online, good value, excellent communications, fast delivery, and very professional service.
Google Company Reviews
18/02/2026
Extremely quick and succinct advice, easy ordering, rapid delivery and excellent performance from reasonably priced products. What’s not to like?!
11/02/2026
Fast. Cheap. Good service.
02/02/2026
great communication - great experience
21/01/2026
Great Service @ Great Price
15/01/2026
Super easy and professional communication with the team at Blake. And a great quality product.
Payment methods accepted
I was pleased with the price and items received however the experience was somewhat marred by DX Couriers. Expecting 2 items in the shipment they only delivered 1 and tracking confirmed 1 of 2 scanned onto delivery vehicle. When I contacted DX they confirmed the second parcel was still in Sheffield at the collection depot. This meant I had to wait in a second day for the rest of the order to arrive.