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.

Desertcart Logo

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.

We remain fully operational. Our teams are working around the clock to ensure your deliveries continue safely.

DOWNLOAD THE APP

WE SOURCE ITEMS FROM

UAE
UK
India
USA
Japan

Customer Services

About Us

Customer Support

Our Other Brands:Hewyn|Selfship

Reviews

B**S

Useless - The included ac adapter is not UK socket compatible

Unless a suitable adapter is provided it os useless. Please provide a UK socket adapter. If one is provided asap, happy to change review.

25.09.2024

D**N

It’s a channel master , it’s a good quality product

10.11.2025

F**.

Works great

3.09.2024

R**T

Had to replace my old powered 8db gain per channel Splitter( different brand) due to power failure surges. I live in a rural area. I went with this 7.5db gain per channel Splitter(close enough). This is very sturdy, seems to be well made. Has a little weight to it which surprised me. Very easy to hook up and works well with no loss I can see. Also, had to replace the 28db PreAmp( different brand) at the antenna. Used the Channel Master adjustable 17 to 31db gain PreAmp. Even set at the low end I am able to pick up about twice the amount of channels during a scan. Picture very sharp and clear. Very pleased with these units and Channel Master.

19.01.2026

B**E

I was able to receive 5 channels using my new Clearstream outdoor antenna however two of the channels from the Hamilton and Burlington ON were sketchy at times. Sometimes the signal failed due to weather conditions. Since installing the Channel Master amplifier these two channels are very consistent even during thunderstorms. All pictures are extremely clear. I am also able to get a sixth channel from Toronto ( City TV) even though the strength of the signal is rather weak according to the channel strength indicator. Weather does play havoc with the City TV station. Very pleased with the Channel Master amplifier and new antenna. Using the outdoor antenna and Channel Master at my Park Model RV in a park with numerous mature trees limiting access to a clear path to pick up TV signals.

25.07.2024

S**.

Getting 47 channels off the air with 20' antenna out in the country.

10.04.2024

ASIN	B0C34KVK34
Best Sellers Rank	137,633 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 225 in Signal Amplifiers
Guaranteed software updates until	unknown
Item model number	CM-7779HD
Manufacturer	Channel Master
Product Dimensions	10.8 x 13.34 x 2.54 cm; 269.32 g

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

Details

Description

Specifications

Reviews

Common Questions