3Com 15-1117A owner manual Amateur TV Systems

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15-1117a.fm Page 10 Thursday, July 15, 1999 11:15 AM

AMATEUR TV SYSTEMS

You can use the In-Line Amplifier with 2.4 GHz, amateur TV (ATV) systems, as shown in “In- stallation C.”

If the power supply provided with your ATV antenna provides a center-positive power supply, it can be used to power the In-Line Amplifier as well; you do not need the amplifier’s power injec- tor.

Caution: The In-Line Amplifier cannot be used if the ATV power supply is center negative.

In this case only, you should remove the DC block from the amplifier and connect the amplifier directly to the F-type connector on the ATV antenna down converter. Remove the plastic tube that holds the amplifier and DC block together and unscrew the two pieces.

If the ATV antenna is used with more than one TV receiver, you must follow all connection pro- cedures for “One Antenna/Two Receiver Systems” (Page 7–9), except that the DC block be- tween the antenna and the amplifier will be removed, as described above.

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Contents DB Coaxial In-Line Amplifier 15-1117a.fm Page 2 Thursday, July 15, 1999 1115 AM 15-1117a.fm Page 3 Thursday, July 15, 1999 1115 AM Illustration ONE ANTENNA/ONE Receiver Systems Installation a ONE ANTENNA/TWO Receiver Systems Installation B Additional Amplification Amateur TV Systems Illustration Problem Solving Specifications 83dB μV MIN 7 Channel Inputs15-1117a.fm Page 14 Thursday, July 15, 1999 1115 AM 15-1117a.fm Page 15 Thursday, July 15, 1999 1115 AM Limited Ninety-Day Warranty