Antop SBS-611B HD Smart Boost Pro Outdoor VHF/UHF Preamplifier


• Frequency range: 174-230MHz, 230-862MHz; VHF/UHF Gain: 20dB Max; Gain Control range: 0-15dB. FM trap is built-in for less interference.
• One VHF/UHF combined signal source input and one TO TV output with separate VHF and UHF gain adjustment for optimal reception.
• Professional signal shielded grade construction and quality, with a low noise level less than 2dB.
• Compatible with all brands of non-amplified outdoor antennas to bring crystal-clear TV reception to your home. It is not recommended to use on any amplified antennas.
• Weather-resistant exterior protects the connecting even during inclement weather.
• Quick & easy set-up. Packaging includes power inserter, USB power supply, zip ties, gain adjustment and clear and installation instructions.

In stock

Featuring Antop’s exclusive HD Smart Boost technology, Antop HD Smart Boost Preamplifier/SBS-611B is designed to improve the performance of non-amplified outdoor antennas in weak signal strength areas. It is compatible with all brands of non-amplified outdoor antennas, and allows you to adjust the VHF gain and UHF gain separately with two simple turns of dials. Its weather resistant exterior design combined with anti-interference internal tech protects signal reception to provide clear pictures and full channel capacity even during inclement weather.
1. Re-scan the channels after each turning of the UHF/VHF dial. 2. Scan channels monthly to find all available channels including newly added or changed. 3. The power supply section (including the Power Inserter, USB Cable, AC/DC Power Adapter) is for indoor use only. Do not expose the power supply section to rain or moisture to prevent fire or shock hazard.
What's in the box
SBS-611B HD Smart Boost Preamplifier
Power Inserter
AC/DC Power Adapter
USB Power Cable
Nylon Cable Tie
Gain Adjustment

Smart Boost Preamplifier

Frequency Range

UHF Range: 470-862MHz, VHF Range: 174-230MHz


20dB Max

Adjusting Range


Max Output level



5 Volts at 200mA

Power Supply

100-240V~50/60Hz, 0.4A

Power Out

DC 5V 200mA

Cable Length


Product Series




Consumer Packaging
Weight 0.44 lbs
Dimensions 4.06 × 4.13 × 2.09 in
ANTOP User Manual
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