Will i still need a pre amplifier with this splitter? Will both give me a better picture or do I just need one of them?

No, you will NOT....unless you have a cable-run from the antenna that is >100'. Then, you will need a pre-amp...but will not need the in-line amp. Pre-amps are designed to be mounted at the antenna, where there is no source power. The pre-amp is powered by the coaxial cable itself, from a power-splitter nearby a house-power source. Pre-amps are preferred to amplifiers if you have a long cable-run to your TV set, from the antenna (>100'). However, preamps need to be mounted AT the antenna. So, if you are not handy with ladders, this may not be for you. The pre-amp removes the inherent signal-loss factor of the cable run, since the cable would not be on the amplified side. An INLINE-AMPLIFIER (like this one) is usually mounted in the house's cable utility box, where the cables branch out to go to different TV sets. It is convenient to get to and no need to climb on the rooftop. HOWEVER, you'll need to have a house-power source nearby. This is usually more handy if you have cable-runs from the antenna that are <100'. AGAIN, accessibility is a breeze since you do not need to go up on the rooftop. Multiple OUTPORT port options can be found on an inline-amp.

Can the booster be installed about 20ft from antenna?

The amplifier may be placed anywhere between the antenna and TV/DVR

Is the DC power adapter included?

Hello, Yes the DC power supply and cable to connect it to the amplifier are included with the amplifier. Thanks, CM support

Can it run on battery power?

It's a 12 VDC @500 mah, so yes, in theory it can run on battery, assuming a 12 VDC battery source is used, and of course, proper connection/polarity is made. This requires some basic wiring termination experience to make the experiment work safely.

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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CM-7779HD PreAmp 1 TV Antenna Amplifier with 5G LTE Filter, Adjustable Gain Preamplifier - Professional-Grade Signal Booster

Q: Can the booster be installed about 20ft from antenna?

The amplifier may be placed anywhere between the antenna and TV/DVR

Q: Is the DC power adapter included?

Hello, Yes the DC power supply and cable to connect it to the amplifier are included with the amplifier. Thanks, CM support

Q: Can it run on battery power?

It's a 12 VDC @500 mah, so yes, in theory it can run on battery, assuming a 12 VDC battery source is used, and of course, proper connection/polarity is made. This requires some basic wiring termination experience to make the experiment work safely.

Product ID: 533471821

Details

Item dimensions L x W x H
10.8 x 13.3 x
Manufacturer
Channel Master
Maximum supply voltage
240 Volts (AC)
Minimum supply voltage
110 Volts (AC)
Voltage
13.2 Volts

📡Built-in 5G LTE & EMI/FM filter

📶Up to 30 dB adjustable gain

🛠️Weatherproof metal housing

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178357CFA

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Description

📡 Elevate your TV signal, ditch the fuzz, and never miss a moment!

BUILT TO BRAVE THE ELEMENTS - Heavy-duty weatherproof metal casing ensures reliable outdoor or attic installation year-round.
BOOST YOUR SIGNAL LIKE A PRO - Adjustable 17 dB/30 dB gain lets you tailor reception for crystal-clear HD channels.
FUTURE PROOF YOUR ENTERTAINMENT - Optimized for ATSC 3.0 and 4K broadcasts, keeping you ahead in the streaming game.
BLOCK THE NOISE KEEP THE SIGNAL - Integrated LTE filter eliminates 3G/4G/5G interference and FM overload for uninterrupted viewing.
POWER OVER COAX NO OUTLET NEEDED - Convenient coaxial powering means no extra outdoor power source—clean, simple setup.

The Channel Master CM-7779HD PreAmp 1 is a professional-grade TV antenna amplifier featuring adjustable gain up to 30 dB, a built-in 5G LTE and EMI/FM filter to block interference, and a rugged weatherproof metal housing for versatile indoor/outdoor installation. Powered via coaxial cable, it supports current and future digital TV standards including ATSC 3.0 and 4K, ensuring enhanced signal quality, reduced pixilation, and potentially more channels for a superior viewing experience.

Specifications

ASIN	B0C34KVK34
Best Sellers Rank	98,152 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 167 in Signal Amplifiers
Brand	Channel Master
Customer Reviews	4.4 out of 5 stars 511 Reviews
Global Trade Identification Number	00020572799997
Item Dimensions	10.8 x 13.3 x 2.5 centimetres
Item Weight	9.5 Ounces
Item dimensions L x W x H	10.8 x 13.3 x 2.5 centimetres
Manufacturer	Channel Master
Material	Metal
Maximum Supply Voltage	240 Volts (AC)
Maximum supply voltage	240 Volts (AC)
Minimum Supply Voltage	110 Volts (AC)
Minimum supply voltage	110 Volts (AC)
Model Number	CM-7779HD
Mounting Type	Assembly
Mounting type	Assembly
Operating Temperature	32 Degrees Celsius
Package Type Name	Shipping box
Specification Met	FCC
Supply Current	200 Milliamps
UPC	020572799997
Unit Count	1.0 count
Voltage	13.2 Volts (DC)

Reviews

D**N

10.11.2025

B**E

25.07.2024

G**S

20.11.2025

M**D

22.01.2026

B**T

9.01.2025

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Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

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