AKG Acoustics manual AKG WMS 4000 ANTENNAS/ACCESSORIES, Antennas Tailored To Every Situation

AKG WMS 4000 ANTENNAS

AKG WMS 4000 ANTENNAS/ACCESSORIES

ANTENNAS TAILORED TO EVERY SITUATION

With its antennas and optional accessories spe- cially “tailored” to the WMS 4000 System, AKG offers the optimum solution to any type of application, allowing users to implement even the most complex antenna networks easily and efficiently.

With its omnidirectional polar pattern, the RA 4000 B Booster Antenna is is a good choice for most applications. Thanks to its rugged, water-resistant case and the integrated antenna booster for use with antenna cables up to 180 m (600 feet) long, the RA 4000 B is even sui- ted for outdoor applications.

The SRA 1 directional antenna is especially suitable for setting up long-range radio links if short antenna cables are used. Because of the passive operation and the 70° beam angle in combination with good off-axis attenuation and front-to-rear ratio, it works particularly well in interference-prone RF environments.

The SRA 2 B is an active directional antenna that works with long-range radio links (up to 300 m / 1000 feet) and long antenna distances. An optional laser positioning pointer makes it easy to aim the antenna precisely at its target area.

The AB 4000 is a highly efficient antenna boo- ster for inserting into long antenna cables. One booster can compensate for approx. 17 dB cable attenuation, allowing cable runs to be extended by approx. 60 m (200 feet). Up to 2 antenna boosters can be used in series for extremely long cable runs.

The ASU 4000 is a remote power adapter for creating additional power feeds to complex antenna networks. Thanks to its small dimen- sions, it is even possible to integrate the ASU 4000 into narrow antenna cable ducts at a later date.

Cabling example/cable lengths:

Maximum cable lengths:

90 m / 300 ft. (@Band VI) to 125 m / 410 ft. (@Band I) of RG 58 180 m / 600 ft. (@Band VI) to 250 m / 820 ft. (@Band I) of RG 213

	Selecting and placing antennas
	The antenna is the “ear” of the radio system, which is why anten-
	nas must be selected and placed carefully. Antennas have polar
	patterns similar to those of microphones, and depending on the
	application, you may need Yagi antennas (comparable to cardio-
	id/hypercardioid microphones), Log Periodic (like shotgun micro-	TV studio
	phones), or omnidirectional antennas.
	If the transmitters will be used only within a rather small area
Installed sound	such as a stage, use directional antennas. Directional antennas
	are generally used to overcome long distances or suppress unwan-
Live sound	ted signals from other directions, e.g., at open-air locations.
	Omnidirectional antennas are ideal for near-field applications
	where no external-direction interference is expected, e.g., indoor
	events (most directional antennas are big and difficult to conceal)	Theater	Worship center
	or multipurpose halls with no preferred direction.
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