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Details about  Adjustable TV/UHF/VHF 75-Ohm Bidirectional Attenuator

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Adjustable TV/UHF/VHF 75-Ohm Bidirectional Attenuator
Item Sold
Item condition:
New other (see details)
Oct 31, 2013
US $7.99
$1.99 Standard Shipping | See details
Item location:
Cleveland, Ohio, United States


eBay item number:
Seller assumes all responsibility for this listing.
Last updated on  Apr 04, 2011 00:12:11 PDT  View all revisions

Item specifics

New other (see details): A new, unused item with absolutely no signs of wear. The item may be missing the original packaging, ... Read moreabout the condition







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75-Ohm Bidirectional Attenuator

Improves poor reception caused by an overly strong signal from cable TV, UHF/VHF, and cable modems.

Adjustable attenuation from 0 to 20dB

RF Signal Attenuator

The RadioShack Bidirectional Attenuator reduces excessively strong signals from UHF/VHF antennas or cable TV. Overamplification from these sources might appear as a washed-out or unusually dark picture. The attenuator reduces or eliminates interference from reflections of strong signals that cause ghosting or double exposures. It also helps correct interference caused by differences between the impedance of your TV's antenna terminal and the signal source. The bidirectional attenuator can fine-tune each station for the best incoming signal strength and allows outgoing signals, such as pay-per-view requests and upstream data transfers from cable modems, to pass through.

Connecting and Operating the Attenuator

For the best connection, use RG-6QS (Quad Shield) 75-ohm coaxial cable, available at your local RadioShack store.


Use only the necessary cable length for the connections.

The attenuator is bidirectional to allow both incoming and outgoing signals.

It works with digital cable or internet.

Installation Instructions

1. Use a screwdriver and screws (not included) to mount the attenuator on a wall, baseboard or your entertainment center.

2. Connect the attenuator's OUTPUT terminal to the 75-ohm antenna terminal on your TV.

Note: If your TV or antenna uses 300-Ohm screw terminals, you need a 75-to-300-ohm transformer, available at your local RadioShack store.

3. Connect the output terminal of the cable box or UHF/VHF antenna to the attenuator's INPUT terminal.

4. Rotate the MIN/MAX knob toward MIN for a weak signal. Rotate MIN/MAX toward MAX for a strong signal.


Frequency Range: 5-1000MHz

Return loss: 5-500MHz (10dB min.), 501-1000MHz (8dB min.)

Attenuation: 0-20dB

Connectors: F-Type coax

Size: 4" x 2" x 1.5"

Item Condition: New in package.

Package condition: Could show signs of shelf wear, be taped or stapled shut. The clear plastic bubble could be dented and there may be inventory stickers.

Warranty: 7 days

RadioShack Cat. No. 15-678 TV Accessory

Visit our eBay store OnLineCentral to view more hard to find Radio Shack accessories.

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