GE ApexPro TT, Техническое руководство

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Equipment Overview
2001989-351A ApexPro™ 2-5
blocks the conduction of DC power to the receiver system and associated hardware. A
bias tee is used with each power supply.
Notch filter
Notch filters are frequency or TV channel specific and notch out the TV video, audio,
or digital center of the band signals. Notch filters also filter pager signals or other
strong RF signals that can be found in a telemetry environment.
Bandpass filter
The bandpass filter rejects frequencies outside its listed bandwidth and passes
frequencies inside its listed bandwidth. It is used in place of certain notch filters to
provide wide band filtering with less in-band loss than multiple notch filters.
Identify antennas
Identify the high-power and active antennas by the part number label and the GE logo
only on the front (bottom). The passive antenna looks identical to the high-power
antenna except it has a black cap over the LED power indicator. To visually identify
the antenna type, observe the following:
„ The -002, -003, -004, and -005 models have an embossed GE logo.
„
The -006, -007, and -008 models have a blue GE logo.
„ The -003, -005, and -006 passive antennas have a black cap over the LED power
indicator.
For further identification, check the part number label.
Part number
Design
frequency
Antenna type Description Status
2000673-002 600 MHz ApexPro Antenna Hi-Pwr
560-614MHz This high-power antenna operates within 560-614MHz and has
filtering for out-of-band signals. It has >15dB rejection below
470MHz. Obsolete
2000673-003 600 MHz ApexPro Antenna
Passive 560-614MHz This passive antenna has no internal filtering or amplification,
therefore requires no DC voltage. Use this antenna with notch
filters, high- or low-pass filters, or a bandpass filter and an in-line
amplifier. Use only when other antennas do not meet design
requirements. Obsolete
2000673-004 450 MHz ApexPro Antenna Hi-Pwr
420-474MHz This high-power antenna operates within 420-474MHz and has
filtering for out-of-band signals. It has >15dB rejection below
320MHz. Obsolete
2000673-005 450 MHz ApexPro Antenna
Passive 420-474MHz This passive antenna has no internal filtering or amplification,
therefore requires no DC voltage. Use this antenna with notch
filters, high- or low-pass filters, or a bandpass filter and an in-line
amplifier. Use only when other antennas do not meet design
requirements. Current
2000673-006 600 MHz ApexPro Passive
Antenna 560-614MHz This passive antenna has no internal filtering or amplification,
therefore requires no DC voltage. Use this antenna with notch
filters, high- or low-pass filters, or bandpass filters and an in-line
amplifier. Use only when the other antennas do not meet design
requirements. Current