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Open Box Spectrum Antenna® Amplified Indoor HD TV Antenna Spectrum3 SP313

<< Previous in Home Indoor HDTV Antenna Next in Home Indoor HDTV Antenna >>

MSRP: $79.95
Price: $44.95
You Save: $35.00 (44 %)
This is an opened box Spectrum Antenna SP313 Indoor Amplified Antenna. It has been checked and covered by the full warranty for 1 year.

The Spectrum Antenna® Spectrum3 is one of the most powerful indoor digital TV antennas in the market today. This 2014 Model has all of the latest technology to amplify and get the best digital TV signal.
  • Programming is free. You do not have to make monthly payments to enjoy HDTV. You pay once for the antenna and then you can watch all the local channels for free.
  • Clear crisp picture. Over the air signals are not compressed like the cable or satellite TV signals so the picture is clearer. Most of our customers are surprised how clear their picture is when they install their new antenna.
  • Powerful TV Antenna This antenna is powerful and can be used close to the broadcast towers or up to 100 miles away. It picks up digital TV signals well with it's SMT technology.
  • No assembly This antenna does not require any assembly. Just plug it in and scan for channels.


  • Compact portable design
  • 360 Degree Manual Rotation
  • Ultrasonic welding, fully waterproof
  • All direction turning support
  • Ideal for horizontal or vertical reception
  • SMT circuit, special for digital/HDTV reception
  • Suitable to be used indoor, outdoor, or for RVs
  • VHF/UHF/FM signal reception
  • Simple installation
  • Works with all digital signals
  • Fits all types of TVs
  • Can be aimed in any direction
  • 100% DTV and HDTV ready
  • Built in high gain booster and super low noise amplifier
  • Works anywhere in the world
  • Supports all OTA, FTA stations

Technical Information

  • Receivable signals: UHF/VHF/FM
  • Frequency: 170-860MHz
  • VHF gain: 25 ± 3dB
  • UHF gain: 30 ± 3dB
  • FM Gain: 25dB
  • Max output level: 95dB
  • Impedance: 75 Ω
  • Power: DC transformer 8~24VDC
  • Receiver power: DC 5V
  • Input voltage: AC 110V/50Hz
  • Rotating: 360 degrees
  • Maximum Signal Amplification

Available Free Over The Air HDTV Channels
Available Free Over The Air HDTV Channels

If you have an analog TV, you will need to get a digital converter box to use this antenna

Works anywhere in the world

 This antenna works anywhere in the world that uses UHF/VHF or FM signals.

Supports all OTA, FTA stations

This antenna can pick up all of the available Free to Air or Over the Air signals in your area. Major television stations such as NBC, ABC, CBS, Fox, and PBS broadcast their programming for free over the air. Why pay the cable company up to $100 or more for something you can get for free with a TV antenna?

Important Facts Your May Want To Know

This HDTV antenna is easy to install, no technical knowledge needed!NO ASSEMBLY REQUIRED. Just Plug and Play. DTV transition ready! Up to a 100+ mile reception range! Low profile design. This HDTV antenna grabs local channels fast and clearly with the high gain and high output capacity!

This HDTV antenna will pick up both analog and digital broadcasts. This antenna is the perfect solution for customers wanting to view free HD channels. Most all of our customers in large media markets receive over 90 digital channels. This high definition antenna is made for the new digital broadcasts because it has a higher UHF gain and most of the high definition broadcasts over UHF.


Who should use this antenna?

People living in large metropolitan cities like NY, LA have many free to air TV antenna towers and their signals are strong so this antenna would be ideal. This antenna is made to pick up a wide spectrum of signals ranging from FM/VHF/UHF. It's an omni directional antenna so it will pick up signals from all directions. It can also be mounted horizontally or vertically. People in the following cities should first try to use this antenna:

  • New York, NY
  • Los Angeles, CA
  • Chicago, IL
  • Houston, TX
  • Philadephia, PA
  • Phoenix. AZ
  • San Antonio, TX
  • San Diego, CA
  • Dallas, TX
  • San Jose, CA
  • Jacksonville, FL
  • Indianapolis, IN
  • San Francisco, CA
  • Austin, TX
  • Columbus, OH
  • Fort Worth, TX
  • Charlotte, NC
  • Detroit, MI
  • El Paso, TX
  • Memphis, TN
  • Baltimore, MD
  • Boston, MA
  • Seattle, WA
  • Washington, DC
  • Nashville, TN
  • Denver, CO
  • Louisville, KY
  • Milwaukee, WI
  • Portland, OR
  • Las Vegas, NV
  • Oklahoma City, OK
Item Number: SP-313ob
Manufacturer: SpectrumAntenna
Manufacturer Part No: SP-313ob

Product Reviews

(34 Ratings, 4 Reviews) Average Rating:
Just ok
Gloria Zednick (Dwight, IL) 8/10/2013 12:17 PM
If you looking to get just a few channels then this is the antenna for you. I found that depending on what time of day you are watching TV channels drop and your unable to pick them back up until you do a re-scan or wait until LATE at night. I do have to say there are times I can get 13 channels up to 52 channels. For what I was looking for this works ok for me. Most of the channels I get are well over 75 miles way(Chicago stations) When ordering any product from this company CALL first to see if it in in stock or your wait time can be months.
Really, really good . . .
E. Binns (San Diego, CA) 2/24/2013 8:41 PM
I am totally impressed with this antenna. I am away from home a lot and was tired of paying cable costs for a lot of channels I didn't need or want. Although I only get a handful of channels the reception is great and the price even better. I get the three major networks NBC, CBS, and ABC plus some independent stations.
Very Pleased
Diana (Chicago, IL) 1/29/2013 7:27 PM
I recieved my order fast and efficiantly, I am very pleased and the product performs as I exspected. I plan on ordering 2 more SP3's for my other TV's and I can finally fire my cable company once and for all.
does the job
L.X. (LA) 10/9/2012 5:43 PM
I have one Artec antenna Artec HDTV Flat Antenna that I use along with a 32" TCL LCD TV in my garage where I can peacefully enjoy Sunday's NFL games. After cancelling my cable service, I needed one more indoor antenna for my TV in the sitting room. After some searching and browsing on, I finally picked this one for two major reasons: 1. This one ships from, which means no hassle returning it in case it doesn't meet my expectation. 2. It's an amplifed antenna that has to be plugged into the wall, theoretically it should boost up reception and pick up more channels in better clarity than the Artec one, for which I had paid around $15. Receiving the antenna took no time with my prime membership, setting up the antenna was fairly straightforward and took me no more than 5 minute, but do pay attention to the set-up diagram on the instuction sheet, there are two identical connectors on the amplifier, one goes to a TV, the other to the antenna, I connected them the opposite way the 1st time before reading the instruction sheet. Before I tried it, I thought I would use the Artec 1st to compare, one thing I noticed was I could not pick up ABC7, everything else such as CBS, NBC, FOX came in plus a whole bunch of channels that I will never watch. Then I switched to this new antenna, after a few minutes of scanning, it picked up 100+ digital channels, more or less the same as the other one, but this time it also picked up ABC7 in HD and a couple of other ABC channels, so I was quite pleased by the difference it made. For now, it's a keeper.
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