Avtex STH4000 Active Antenna High Gain Digital Freeview TV Aerial Booster 12/24v
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The Avtex STH4000 is a directional DVB-T/T2 active digital TV aerial with a built-in 20dB low noise amplifier and LTE filtering, designed for Freeview reception in caravans, motorhomes and HGVs, or wall-mounted at home. It runs on 12/24V DC or via the antenna power output on a compatible set-top box, such as the Avtex SmartPRO 27" HD TV.
Key specifications
- Type: directional terrestrial DVB-T/T2 active antenna
- Gain: 20dB, built-in low noise amplifier
- Filtering: LTE filter to reduce mobile signal interference
- Power: antenna power out from a set-top box, or 12/24V DC power inserter
- Mounting: flexible suction mount, pole or wall bracket supplied
- Housing: UV resistant and water resistant
STH4000: terrestrial DVB-T/T2 active antenna
The STH4000 is a high-gain digital TV aerial built for reliable Freeview reception on the road, in a caravan, or fixed to a wall — no tools required.
- High gain 20dB TV aerial
- Directional
- Built-in low noise amplifier
- 2-way power source: TV antenna power out or 12V/24V DC
- Flexible suction mount — no need to drill holes
- Pole and wall mounting bracket also supplied
- UV resistant housing
- Water resistant
The flexible suction mount fixes to a windscreen or smooth surface in seconds. A pole and wall mounting bracket are included for a more permanent setup.
Power it via the antenna output on most set-top boxes, or use the included 12/24V DC power inserter — ideal for caravans and HGVs.
LTE filtering reduces interference from mobile signals, helping to keep your picture clean and stable.
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Specification
| Type | Case |
|---|---|
| Series | STH |
| Article Number | STH4000 |
| Country of Manufacture | China |
More specs
| |
What's Included
- Avtex STH4000 Active Antenna
- 12/24V DC power inserter
- Flexible suction mount
- Pole/wall mounting bracket
Avtex
About the Avtex STH4000
From our tech experts at CEN
The Avtex STH4000 is a directional digital TV aerial for Freeview reception. It has a built-in 20 dB low noise amplifier and an LTE filter to cut interference from mobile signals. Power comes from a TV or set-top box antenna output, or from the included 12/24V DC power inserter.
Who it suits
Caravanners, motorhome owners and HGV drivers who want terrestrial TV without a roof-mounted aerial, and anyone wanting a simple indoor aerial at home. It pairs well with an Avtex 12V TV such as the SmartPRO 27.
Our tech experts advise
Because it is directional, point it towards the nearest transmitter and rescan the TV after moving. The flexible suction mount fixes to a window with no drilling, and a pole or wall bracket is supplied for a permanent setup. Use the power inserter where the TV has no antenna power output. Get in touch with any questions.
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Frequently Asked Questions
Q: Do I need to drill holes to fit the Avtex STH4000?
A: No. The flexible suction mount fixes it to a windscreen or smooth surface in seconds. A pole and wall mounting bracket is also supplied for a more permanent setup.
Q: How is the STH4000 aerial powered?
A: It can be powered from the antenna power output on most set-top boxes, or from the supplied 12/24V DC power inserter, which suits caravans and HGVs.
Q: Does the STH4000 help with 4G interference?
A: Yes. Built-in LTE filtering reduces interference from mobile signals to keep the picture clean and stable.
