R&S®ATCMC Air Traffic Control Multicoupler

Active 8-port and 16-port VHF/UHF signal distribution

Visão geral
Models
Options

Key Facts

Suppression of distortion signals from high-power transmitters in the stop band
Band-selective in the VHF or UHF ATC frequency range
1-to-8 or 1-to-16 distribution

Brief Description

The multicouplers of the R&S^®ATCMC family are specifically designed for the use in ATC receiving systems and they match with the ATC receivers from Rohde & Schwarz.

Features

Suppression of adjacent high-power signals
Available as 1-to-8 or 1-to-16 model
Integrated automatic emergency power switchover

Specifications

Standard frequency range	112 MHz to 144 MHz
Impedance input/output	50 Ω

Key Facts

Suppression of distortion signals from high-power transmitters in the stop band
Band-selective in the VHF or UHF ATC frequency range
1-to-8 or 1-to-16 distribution
Automatic emergency power switchover
Overvoltage protection
Floating alarm contact

Brief Description

The multicouplers of the R&S^®ATCMC family are specifically designed for the use in ATC receiving systems and they match with the ATC receivers from Rohde & Schwarz.

The space-saving R&S^®ATCMC8 optimally supports typical ATC system installations with eight receivers operated in parallel on one antenna. The R&S^®ATCMC16 features simultaneous signal distribution to up to 16 receivers.

Features & Benefits

Suppression of adjacent high-power signals

The integrated bandpass filtering of the ATCMC considerably improves the reception conditions for the connected receivers. Distortion signals such as high-power FM signals in the VHF band or TV signals in the UHF band are suppressed. To offer optimized filtering for any application, the R&S^®ATCMC is available as either a VHF or a UHF model. Rohde&Schwarz also offers various R&S^®ATCMC options with different filter characteristics.

Available as 1-to-8 or 1-to-16 model

For space and cost reasons, parallel operation of up to eight or 16 receivers on a single antenna is very common in air traffic control. The R&S^®ATCMC multicoupler family can easily handle this challenge and is therefore available as either an 8-port or 16-port model. To prevent the connected receivers from affecting each other (e.g. due to local oscillators and synthesizers), both models feature high port-to-port isolation.

Integrated automatic emergency power switchover

The R&S^®ATCMC is ideal for operation with either AC or DC power. The integrated electronic switchover mechanism detects interruptions in the AC power supply and immediately switches automatically to the DC supply. The 24 V DC emergency power supply systems that are common in ATC can be used.

Reliable protection against large signals

Special importance was placed on the linearity (IP3) and the large-signal immunity of the ATC multicoupler. The integrated protective circuits at the RF input of the R&S^®ATCMC reliably prevent large signals from damaging the connected receivers.

Remote monitoring through floating alarm contact

Featuring an integrated alarm contact as standard, the R&S^®ATCMC multicoupler family offers impressive capabilities for remotely monitoring the internal operating state. If a malfunction occurs, the R&S^®ATCMC immediately switches the floating contacts of a relay to indicate the modified operating state. All internal supply voltages of the amplifiers are monitored. This provides the opportunity to use an external Web I/O interface to evaluate the signalized status via simple network management protocol (SNMP). In conjunction with Rohde&Schwarz Series4200 radios, this alarm contact makes it possible to automatically report the operating state of the R&S^®ATCMC to the user.

Specifications

R&S^®ATCMC VHF
Standard frequency range	other frequency ranges on request	112 MHz to 144 MHz
Impedance	input/output	50 Ω
RF input		1 x N female
VSWR		<1.5:1, 1.2:1 (typ.)
VHF FM band suppression	7-pole elliptical highpass filter referenced to 127 MHz	<-25 dBr for f < 103 MHz
	Option B21	–25 dBr for 108 MHz
UHF TV band suppression	3-pole Chebyshev lowpass filter referenced to 127 MHz	<-30 dBr for 470 MHz < f < 1 GHz
	Option B21	<-25 dBr for 185 MHz < f < 1 GHz
Max. input power		+15 dBm
RF outputs	R&S^®ATCM8	8 x N female
	R&S^®ATCM16	16 x N female
VSWR	output	< 1.5:1, 1.2:1 (typ.)
1 dB compression	R&S^®ATCM8	> +15 dBm, +19 dBm (typ.)
	R&S^®ATCM16	>+15 dBm, +18 dBm (typ.)
Decoupling between two outputs		>27 dB, 34 dB (typ.)
Intermodulation suppression IP3	R&S^®ATCM8	>+33 dBm, +36 dBm (typ.)
	R&S^®ATCM16	> +32 dBm, +35 dBm (typ.)
Gain	R&S^®ATCM8	2 dB ± 1.5 dB
	R&S^®ATCM16	2 dB ± 2 dB
Noise figure	R&S^®ATCM8	<7 dB, 4.5 dB (typ.)
	R&S^®ATCM16	< 7 dB, 5 dB (typ.)
Reverse decoupling	R&S^®ATCM8	>34 dB, 38 dB (typ.)
	R&S^®ATCM16	> 34 dB, 42 dB (typ.)

R&S^®ATCMC UHF
Standard frequency range		225 MHz to 400 MHz
Impedance	input/output	50 Ω
RF input		1 x N female
VSWR	R&S^®ATCMC8	<1.5:1, typ. 1.2:1 (typ.)
	R&S^®ATCMC16	<1.5:1, typ. 1.3:1 (typ.)
VHF FM band suppression	5-pole Chebyshev highpass filter referenced to 310 MHz	< –17 dBr for f < 100 MHz
	Option B12, B18	<-17 dBr for f < 50 MHz
	Option B3	<-25 dBr for f < 500 MHz
UHF TV band suppression	5-pole Chebyshev lowpass filter referenced to 310 MHz	<-17 dBr for 650 MHz < f < 1 GHz
	Option B18	<-17 dBr for 850 MHz < f < 1 GHz
	Option B3	< –25 dBr for 500 MHz < f < 1 GHz
Max. input power		+15 dBm
RF outputs	R&S^®ATCM8	8 × N female
	R&S^®ATCM16	16 × N female
VSWR	R&S^®ATCM8	<1.5:1, 1.2:1 (typ.)
	R&S^®ATCM16	<1.5:1, 1.2:1 (typ.)
1 dB compression		>+15 dBm, +18 dBm (typ.)
Decoupling between two outputs	directly adjacent	>23 dB, 26 dB (typ.)
	not directly adjacent
Intermodulation suppression IP3		>+32 dBm, +35 dBm (typ.)
	Option B14	>+32 dBm, +44 dBm (typ.)
Gain	R&S^®ATCM8	2 dB + 2 dB/-1.5 dB
	R&S^®ATCM16	2 dB + 2 dB
	Option B14	5 dB ± 1.5 dB
Noise figure		<7 dB, 5 dB (typ.)
Reverse decoupling	R&S^®ATCM8	>33 dB, 38 dB (typ.)
	R&S^®ATCM16	> 34 dB, 42 dB (typ.)

General data
Dimensions (W × H × D)	R&S^®ATCM8	482.6 mm × 43.8 mm × 145 mm (19 in × 1.72 in × 5.71 in) (19", 1 HU)
	R&S^®ATCM16	482.6 mm × 89 mm × 145 mm(19 in × 3.44 in × 5.71 in) (19”, 2 HU)
Temperature	operating temperature range	–20°C to +55°C
	storage temperature range	–40°C to +70°C
Weight	R&S^®ATCM8	approx. 2.6 kg (approx. 5.73 lb)
	R&S^®ATCM16	approx. 3.7 kg (approx. 8.16 lb)
Primary power supply	AC	90 V to 250 V/50 Hz to 60 Hz; IEC connector
Energy consumption	R&S^®ATCM8	≤8 W
	R&S^®ATCM16	≤ 20 W
Emergency power supply	DC (fully automatic switchover)
	R&S^®ATCM8	19 V to 32 V, 0.3 A (typ.)
	R&S^®ATCM16	19 V to 32 V, 0.5 A (typ.)
Alarm contact	maximum switching current	≤1 A
	maximum switching voltage	≤42 V
Connector type	emergency power supply, alarm contacts	CA 6 GS (6+PE)
Electromagnetic compatibility		EN55011 class B and EN61326

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