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Specifications; Lightning Protection - Radio Shack 15-257 User Manual

Outdoor amplified hdtv antenna

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4. Adjust the antenna to a position that provides the best
reception.
n
Notes:
For HD reception, you need a TV with an ATSC HDTV tuner,
an HDTV receiver, or digital Set Top box (not included).
Use only an adapter that supplies 12VDC and delivers at
least 100mA. Its center tip must be set to positive and its
plug must fit this antenna's DC 12V jack.
Disconnect the adapter from AC power before you
disconnect it from the antenna.

Specifications

Power source ......................................................... 12V DC 100mA
Frequency Range
UHF ............................................. 470 – 806 MHz (channel 14−69)
VHF-Hi .......................................... 174 – 216 MHz (channel 7−13)
Average amplifier gain ....................................................10-14 dB
Output impedance ...........................................................75 ohms
Output return loss ............................................... 6 dB (minimum)
Noise figure ............................................................................. 4 dB
Dimensions (H×W×D) ......... 7.7×13×2.5 in. (196×330×63.5 mm)
Weight .....................................................................20.9 oz (593 g)
Specifications are subject to change and improvement without
notice. Actual product may vary from the images found in this
document.

Lightning Protection

Ground wires for both the mast and download should be
copper or aluminum wire, 8 AWG or larger. Mount a grounding
block (not supplied) as close as possible to where the download
cable enters the house. Downlead wire from the antenna to the
grounding block and the mast ground wire should be secured
to the house with standoff insulators, spaced 4-6 feet apart.
5

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