1-Way High Gain UHF Masthead Amplifier
Product Code: BLAMHD11H
- 90 Degree Wide opening door
- 1-Way Variable Fixed Gain 27dB
- Power LED on Amplifier
- Foam Seal Cable Entry Glands
- F-Type Connectors
Product Description
Class 1 1-Way High Gain UHF Masthead Amplifier; 1 Input; 1 Output-27dB
Triple Filtered Reception for Optimal Performance:
4G, 5G, and TETRA Compatibility
Elevate your reception quality with the RED Class 1, Blake 1-Way Variable Fixed Gain 27dB Masthead Amplifier. This CE/UKCA compliant amplifier offers exceptional performance, incorporating advanced 5G/4G LTE filtering and amplification for TV frequencies within the 21-48 band (470-694MHz). With its fixed variable 27dB gain and low noise figures (<2.5dB typical), it ensures optimal signal strength and clarity. The amplifier features F-type connectors on both inputs and outputs for easy connectivity.
Designed to reduce interference from 5G/4G LTE signals, the amplifier exhibits excellent filter characteristics with >30dB suppression for frequencies below 400MHz. It is also compliant with Class 1 EN 303 354 standards for effective filtering of 5G frequencies. Additionally, the amplifier filters TETRA signals below 470MHz.
The amplifier's thoughtfully engineered design allows for convenient access. The case opens to a full 90 degrees, providing easy access to the F connectors, while the shielded amplifier casing swings out to 45 degrees. The casing includes an LED indicator to confirm power reception.
With a robust and water-resistant construction, the amplifier features seal-protected cable entry points to prevent moisture and insects from compromising its performance. The case securely closes with a satisfying "solid click" and includes an optional security screw for added protection.
Designed for linearity, the amplifier effectively handles strong local signals without compromising performance.
Installer-Friendly Design:
- 90° Wide Opening Door for easy access.
- Optional Securing Screw for added stability.
- Heavy-Duty UV Stabilized Cable Tie for secure installation.
- Dual LED Indicators for advanced short circuit protection.
- Foam Seal Cable Entry Glands to safeguard against external elements.
- Power LED on Amplifier for visual confirmation of power status.
- 45° Swivel and Click Amp for flexible positioning.
- Robust Wall Mountable Lugs for secure installation.
- Available in 2, 4, and 8 outputs for diverse setup requirements.
- Low Noise Figures <2.2dB for superior signal quality.
- F-Type Connectors for reliable connections.
- Equipotential Bonding Point/Earthing Tag for safety compliance.
Early Feedback from Installers:
"The quality is superb – you can tell that immediately from the robust housing."
"I’d say it’s a nicely designed product with some neat features like foam seal cable entry – you’ve clearly been listening to installers."
"Great to finally have a masthead that I can fit compression connectors into. Nice work."
This is just the beginning of our expanding product range, stay tuned for more innovative solutions.
Technical Specification
Number of Outputs
1
Low, Medium or High
High (27dB)
Lifetime Guarantee
15-years
Colour
Black
IEC or F Type
F-Type
Internal or External
External
Amplifier Includes Full Output
No
RED Class 0 or Class 1
Class 1
Number of Inputs
1
Amplifier Includes Power Supply Unit (PSU)
No
In Line or Plug In
In-Line
Width
50mm
Depth
112mm
Height
109mm
Weight
0.19kg
Product Comparison
Number of Outputs
4
1
2
4
2
4
4
Low, Medium or High
Variable
High (27dB)
Variable
Variable
Variable
Variable
Variable
Amplifier Includes Power Supply Unit (PSU)
No
No
No
No
Yes
Yes
Yes
Frequently Asked Questions
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
24/04/2026
Excellent service, actually answered the phone and dealt with enquiry and also product query. Website was easy to use and order arrived safely and on time. Have used them twice now. Keep doing what you are doing
06/03/2026
Speedy Delivery and communication
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





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.