AB 9000 A1-A8 Antenna Booster (470 MHz - 638 MHz) Sennheiser

Highly selective filters, linear RF amplifier
The remote-controlled antenna booster contains eight highly selective filters that each allow a 24 MHz frequency window to pass. This adds significant safety to the system, as unwanted signals are blocked directly before the first active component. The frequency window can be remotely selected from the receiver. The linear RF amplifier with very high resistance to intermodulation can compensate for cable losses of up to 14 dB. The booster and receiver together check the cable loss on the RF cable and adjust the gain automatically.

SPECIFI CATIONS

RF characteristics
Frequency range	470 MHz to 798 MHz, divided into:  A1–A8: 470 MHz to 638 MHz  A5–B4: 550 MHz to 718 MHz  B1–B8: 630 MHz to 798 MHz
Radiation pattern	A 9000: omni-directional AD 9000: directional
Amplification	typ. 17 dB (constant)
Antenna input (AB 9000 only)	N-type socket (50 W)
Antenna output	N-type socket (50 W)
Antenna gain	A 9000: 3.2 dBi AD 9000: 4.6 dBi
Apex angle AD 9000	approx. 100° (-3 dB)
Front-to-back ratio AD  9000	≥ 14 dB
OIP3	≥ 35 dBm
Preselection 24 MHz	automatic or manual (without EM 9046)
Other characteristics
Current consumption	max. 160 mA at 12 V
Voltage range	9–18 V DC feed via antenna cable from EM 9046
Mounting connection	3/7" or 5/7"
Dimensions (H x W x D)	A 9000: 250 x 165 x 23 mm AB 9000: 80 x 64 x 24 mm AD 9000: 329 x 322 x 23 mm
Weight	A 9000: approx. 390 g AB 9000: approx. 265 g AD 9000: approx. 625 g
Operating conditions
Ambient temperature	-10 °C to +50 °C
Relative air humidity	max. 85% at 40 °C (non-condensing)
Protection against dripping and light splashing of liquids	the product must not be exposed to dripping and splashing (I P2X)
Storage and transport conditions
Ambient temperature	-25 °C to +70 °C
Relative air humidity	max. 90% at 40 °C
Protection against dripping and light splashing of liquids	the product must not be exposed to dripping and splashing (IP2X)
Shock resistance	as per IEC 68 or EN 60068, T2-27

PRODUCT OVERVIEW

1 Antenna surface

2 and 9 “Com” “On” LED

• red: error

• green: manual mode

• blue: automatic mode (EM 9046-controlled)

• white: firmware update in progress

3 Hole for connection of safety wires

4 RF out socket (N-type)

5 Type plate (not visible here)

6 RF in socket (N-type) (AB 9000 only)

7 Stand adapter

8 “Filter”rotary switch for manually adjusting the booster frequency range

Antennas/antenna boosters overview

EM 9046 receiver

up to 8 DRX receiver modules, 470–798 MHz

A/AB/AD 9000 booster variant

A1–A8 470–638 MHz

A1–A8 470–638 MHz

Booster frequency range

A1

A2

A3

A4

A5

A6

A7

A8

B1

B2

B3

B4

B5

B6

B7

B8

Bandwidth in MHz

470–494

494–518

510–534

534–558

550–574

574–598

590–614

614–638

630–654

654–678

670–694

694–718

710–734

734–758

750–774

774–798

SK/SKM 9000 transmitter

type A1–A4 470–558 MHz

type A5–A8 550–638 MHz

type B1–B4 630–718 MHz

type B5–B8 710–798 MHz