ATM Communications

Z4 RF Conditioning

Deliver the optimum combination of size and performance, reliable even in difficult RF environments.

The Z4 family of RF conditioning filters and accessories delivers the optimum combination of size and performance. For difficult RF environments in particular, the reliability of the Z4 is an asset to any ATC infrastructure.

Designed to accompany our T6 Radios, a choice of VHF and UHF manually tuned cavity filters is available. This choice is matched by all the accessories needed to create star point or hybrid combiners in any configuration.

The Z4 range includes filters distinguished by their incredibly compact size, with a dual 80mm filter package occupying the same rack space as a T6 Radio.

Our range truly meets the ‘fit-and-forget’ requirements for RF filtering and combining, requiring little if any maintenance and offering very long service life due to the inherent simplicity of the design.


Features & Benefits

Optimum combinations.

80mm cavity filters for most applications. A dual filter package measures just 2U x half 19″ rack width. In combination with the T6 Radios, this represents the smallest, lightest radio channel for ATC applications.

170mm cavity filters for more demanding environments. A single filter package exhibits high selectivity for exceptional RF performance in the presence of strong interference.

Wide choice of variants and accessories.

Iris-coupled variants are available for applications demanding higher performance in the same form factor as a dual pair. Accessories include isolator, splitter, relay, hybrids, VSWR monitor and cables, allowing you to build the ideal RF conditioning solution for any installation.

Combine channels onto single or multiple antennas.

Star-point and hybrid double bridge configurations are available to suit a wide range of performance requirements.

Fit and forget.

Installation is fast and simple. No tools are required. RF connections are standard N-Type.

Straightforward main/standby solutions.

When main/standby changeover is required outside the radio, for example to ensure continuous operation during upgrade or repair, the Z4 Solid State Changeover Relay and Z4 3 dB Receiver Splitter combine excellent RF characteristics with simplicity of installation.

Z4 RF Conditioning Specifications

80 mm Fixed Cavity Filter

VHF - 112 MHz to 156 MHz, UHF - 225 MHz to 400 MHz

50 W RF power handling

79 mm high x 105 mm wide x 420 mm deep, 2.5 kg

Available in single, dual and iris coupled variants

Star point and hybrid double bridge combiner options

170 mm Fixed Cavity Filter

VHF - 112 MHz to 156 MHz, UHF - 225 MHz to 400 MHz

50 W RF power handling

168 mm high x 210 mm wide x 420 mm deep, 5 kg

Star point and hybrid double bridge combiner options

Autotune Cavity Filter

8VHF - 112 MHz to 156 MHz, UHF - 225 MHz to 400 MHz

100 W RF power handling

Isolator

VHF - 118 MHz to 156 MHz, UHF - 225 MHz to 400 MHz

50 W or 250 W RF power handling

Solid State Changeover Relay

VHF / UHF - 112 MHz to 400 MHz

50 W or 250 W RF power handling

Receiver Splitter

VHF / UHF - 112 MHz to 400 MHz

< 3.5 dB insertion loss, > 20 dB isolation

VSWR Monitor

VHF / UHF - 112 MHz to 400 MHz

250 W RF power handling