YW4500 - TV Antenna TOA - Free user manual and instructions

Product type	UHF dipole indoor TV antenna
Brand	TOA
Model	YW-4500
Power supply	7 to 12 V DC (provided by tuner)
Power consumption	< 15 mA
Receiving frequency	550 to 937.5 MHz (UHF)
Antenna gain	> 8 dB (at 0 dB attenuation)
Adjustable attenuator	0 / -10 / -20 dB (selectable)
Output impedance	75 Ω
Compatible coaxial cable type	RG-6/U or RG-11/U
Maximum cable length	35 m (RG-6/U), 50 m (RG-11/U)
Operating temperature	-10°C to +50°C
Operating humidity	30% to 85% RH
Weight	270 g
Color	Off white
Included accessories	2 wood screws, 2 machine screws, 1 rubber cable bushing
Installation	Indoor wall-mounted, at least 30 cm from ceiling and 2.4 m from floor
Indicator light	Yes, lights up when powered
Built-in RF amplifier	Yes, compensates for cable loss
Safety	Professional installation recommended; avoid exposure to rain and humidity
Maintenance	Clean with a soft, dry cloth; do not use chemicals

Frequently Asked Questions - YW4500 TOA

How to install the YW-4500 antenna?

Installation is done in several steps: remove the 4 screws of the housing, separate the two parts, route the coaxial cable, strip the end, connect the cable to the board, fix the rear housing to the wall, then put the top of the housing back. Make sure the antenna is at least 30 cm from the ceiling and 2.4 m from the floor.

What if the indicator light does not turn on?

Check that the antenna is correctly powered via the coaxial cable from a compatible tuner (WT-5800, WT-5805, WT-4820 or WD-4800). Make sure the cable is properly connected and the tuner is powered on. If the problem persists, consult the manual.

How to adjust the attenuator?

The attenuator switch offers three positions: 0 dB (factory preset), -10 dB and -20 dB. Use position 0 dB in the absence of interference. If interference appears (noise, adjacent channels), increase the attenuation. Note that this reduces the range of the wireless microphone.

What type of coaxial cable to use?

Use a coaxial cable with impedance 75 Ω. Recommended types are RG-6/U (outer diameter 8.4 mm, max length 35 m) and RG-11/U (outer diameter 10.3 mm, max length 50 m).

What is the minimum distance from the ceiling?

The antenna must be installed at least 30 cm from the ceiling for optimal reception. The distance from the floor must be at least 2.4 m.

Can I install the antenna outdoors?

No, the YW-4500 is designed for indoor use only. Outdoor installation exposes the device to weather and risks falling or electric shock. If outdoor installation is necessary, contact a professional.

Is the antenna compatible with all UHF tuners?

The antenna is intended for use with TOA tuners WT-5800, WT-5805, WT-4820 and WD-4800, which provide power via the coaxial cable. It can operate with other UHF tuners providing a power supply of 7 to 12 V DC and an impedance of 75 Ω.

What to do in case of interference?

If interference appears, first check that the antenna is properly oriented vertically (horizontal reception reduces gain by 6 dB). Use the attenuator to reduce noise. Move the antenna away from windows (at least 1 m) and other antennas (6 to 18 m apart). Make sure wireless microphones are more than 3 m from the antenna.

How to clean the antenna?

Clean the antenna with a soft, dry cloth. Do not use chemicals, solvents or water, as they could damage the device. Avoid dust accumulation by wiping regularly.

What accessories are supplied with the YW-4500?

Included accessories are: 2 wood screws for wall mounting, 2 machine screws for electrical box, and 1 rubber cable bushing for routing the coaxial cable.

USER MANUAL YW4500 TOA

WALL-MOUNTED WIRELESS ANTENNA

YW-4500

Please follow the instructions in this manual to obtain the optimum results from this unit. We also recommend that you keep this manual handy for future reference.

1. SAFETY PRECAUTIONS

• Be sure to read the instructions in this section carefully before use.
• Make sure to observe the instructions in this manual as the conventions of safety symbols and messages regarded as very important precautions are included.
  • We also recommend you keep this instruction manual handy for future reference.

Safety Symbol and Message Conventions

Safety symbols and messages described below are used in this manual to prevent bodily injury and property damage which could result from mishandling. Before operating your product, read this manual first and understand the safety symbols and messages so you are thoroughly aware of the potential safety hazards.

WARNING

Indicates a potentially hazardous situation which, if mishandled, could result in death or serious personal injury.

• Be sure to securely mount the unit on the wall or ceiling that is robust enough to stand the antenna weight. Failure to do so may drop the antenna, causing personal injury and/or property damage.
• Do not expose the unit to rain or an environment where it may be splashed by water or other liquids, as doing so may result in fire or electric shock.
• To prevent lightning strikes, install the unit at least five meters away from a lightning rod, and yet within the protective range (angle of 45^ ) of the lightning conductor. Lightning strikes may cause a fire, electric shock or personal injury.
• Since the unit is designed for in-door use, do not install it outdoors. If installed outdoors, the aging of parts causes the unit to fall off, resulting in personal injury. Also, when it gets wet with rain, there is a danger of electric shock.
• Use nuts and bolts that are appropriate for the ceiling's or wall's structure and composition. Failure to do so may cause the unit to fall, resulting in material damage and possible personal injury.
• Do not touch a plug or antenna during thunder and lightning, as this may result in electric shock.

CAUTION

Indicates a potentially hazardous situation which, if mishandled, could result in moderate or minor personal injury, and/or property damage.

• Leave the installation of an antenna to your TOA dealer because the installation requires expert knowledge. The falling of an antenna may cause personal injury.
• Do not place heavy objects on the unit as this may cause it to fall or break which may result in personal injury and/or property damage. In addition, the object itself may fall off and cause injury and/or damage.

Traceability Information for Europe

Manufacturer:

TOA Corporation

7-2-1, Minatojima-Nakamachi, Chuo-ku, Kobe, Hyogo, Japan

Authorized representative:

TOA Electronics Europe GmbH

Suederstrasse 282, 20537 Hamburg, Germany

2. GENERAL DESCRIPTION

The TOA YW-4500 is an indoor dipole antenna designed to be used in a UHF band wireless system. A power lamp is provided on the unit's bottom side to indicate the power supply status (it lights when power is supplied.).

Power for the YW-4500 is supplied on a coaxial cable from the antenna connector of the WT-5800, WT-5805, WT-4820, or WD-4800.

Cable loss can be compensated for by a built-in RF signal booster.

3. INSTALLATION PRECAUTIONS

• Avoid installing the unit in humid or dusty locations, in locations exposed to the direct sunlight, near the heaters, or in locations generating sooty smoke or steam.
• When installing the YW-4500 in a room of a tall building, be sure to position it more than 1 m apart from a window to minimize interference caused by external noises of radio waves.
• When using a wireless microphone, keep it 3 m or more away from the YW-4500.
  Doing otherwise may cause unused other channels to operate or radio interference to occur.
• When using two or more antennas, they should be spaced out 6 to 18m apart from each other.
• Take special care when treating coaxial cable end and when connecting the cable to the antenna and BNC connector. Incomplete cable treatment and connection deteriorate receiving sensitivity, and increase interference caused by external noises.
• Use the coaxial cable of 75 impedance.

4. NOMENCLATURE

[Front]

85 120 Attenuator switch Sets attenuation level for 0, -10, or -20 dB positions. (For details, refer to "7. ATTENUATOR SWITCH SETTING.")

[Top]
Unit: mm

105 126

[Side] [Bottom]

116 140 Bottom caseTop case

Power lamp Lights when power is supplied to the unit.

5. INSTALLATION

Step 1. Remove 4 screws on the top case.

Attenuator switch Bottom case Top case

Step 2. Detach the top case from the bottom case.

- If the coaxial cable is wired over the wall from the ceiling or floor

1. Cut the cable outlet of the frame using a pair of cutting pliers, etc.

Cable outlet

1. Cut the supplied rubber bushing into halves. One half is suited for the RG-6U cable (smaller internal diameter) and other half for the RG-11/U cable (larger internal diameter). Run the cable through the bushing. (Insert the bushing into the cable entry hole after cable installation completion.)

Rubber bushing

1. Run the coaxial cable through the cable outlet.

Isometric technical diagram of a mechanical assembly with no visible text or symbols

- If the coaxial cable is to be drawn directly from the wall surface

1. Drill a ø20 mm hole.

2. Run the coaxial cable through the hole and the bottom case as well, and draw it out as shown below.

Ø20 mm

- If the coaxial cable is installed using a recessed electrical box (Mounting pitch: 83.5 mm) Draw out the coaxial cable through the electrical box and the bottom case.

Note: Be sure to use a pipe thick enough to allow the wired coaxial cable to be easily inserted.

Technical line drawing of a mechanical assembly with no visible text or symbols

Step 3. Strip coaxial cable end.

- RG-6/U

Unit: mm

Braided shield 13 Unknit braided shields and bend it back. Dielectric Conductor Jacket 10312

- RG-11/U

Braided shield 13 Conductor Braided shield 3 10

Step 4. Fix the coaxial cable to the circuit board of antenna.

1. Remove 3 cable clamp screws.
2. Connect the coaxial cable to the circuit board.
3. Fix the cable with the removed screws.

Cable clamp screws Attenuator switch Coaxial cable

Step 5. Mount the antenna bottom case on the wall. Use the supplies wood screws (4 x 25) to fix it to the wall surface, or supplies machine screws (3.5 x 20) to fix to the electrical box.

Technical line drawing of a mechanical assembly with no visible text or symbols

Notes

- When installing the YW-4500, be sure the antenna is more than 30 cm away from the ceiling. It is recommended that the unit be installed at the height of 2.4 m or more from the floor.

More than 30 cm

- Set the antenna vertical to the ceiling floor. The receiving sensitivity of the antenna, when installed horizontally, is about 6 dB lower than that when installed vertically. The receiving sensitivity greatly depends on the installation condition.

Step 6. Replace the top case and retighten the 4 top case screws removed.

In this case, pay attention to the following points.

• The top case should be positioned with its lamp hole (located on the bottom side) facing downward.
• The knob of attenuator switch on the built-in circuit board should fit in that of top case.

6. SPECIFICATION OF THE COAXIAL CABLE

Cable Type	External Diameter Max. Length
RG-6/U	8.4 mm	35 m
RG-11/U	10.3 mm 50 m

7. ATTENUATOR SWITCH SETTING

The attenuator switch is provided to minimize external noises or interference caused when two or more microphones having the same channel or adjacent channels are used in close proximity to each other.

The attenuation level can be selected from 0 (factory-preset), -10, and -20 dB positions.

The more the attenuation level increases (antenna sensitivity becomes less), the narrower the usable area of wireless microphone is.

In the condition that no interference is present, set the attenuator switch of the antenna for 0 dB position.

8. SPECIFICATIONS

Power Source 7 to 12 V DC (supplied from tuner)
Current Consumption Under 15 mA
Receiving Frequency 550 to 937,5 MHz, UHF
Antenna Gain More than 8 dB (0 dB position)
Attenuator 0 / -10 / -20 dB (selectable)
Output Impedance 75 Ω
Recommended Cable Type RG-6/U or RG-11/U
Operating Temperature Range -10 to 50°C
Operating Humidity 30 % to 85 %RH
Weight	270 g
Color	Off-white

- Accessories

Wood screw 2

Machine screw (for electrical box) ... 2

Rubber bushing 1

Note: The design and specifications are subject to change without notice for improvement.

UHF Dipolantenne zur Wandmontage

YW-4500

Technical line drawing of a mechanical assembly with no visible text or symbols

Technical line drawing of a mechanical assembly with no visible text or symbols

Technical line drawing of a mechanical assembly with no visible text or symbols

Hinweise

Technical line drawing of a mechanical assembly with no visible text or symbols

Technical diagram of a mechanical assembly with internal components and mounting holes (no text or labels)

Cable clamp screws Attenuator switch Coaxial cable

Mechanical assembly diagram showing a clamping mechanism with no visible text or symbols

Nota

Technical line drawing of a mechanical assembly with no visible text or symbols

Technical line drawing of a mechanical assembly with no visible text or symbols

Technical line drawing of a mechanical assembly with no visible text or symbols

Notas

Technical line drawing of a mechanical clamp or bracket component (no text or symbols)

1. 将同轴电缆穿过电缆出口。

Technical line drawing of a mechanical assembly with no visible text or symbols

- 如果同轴电缆直接从墙面拉出，

Technical line drawing of a mechanical assembly with no visible text or symbols

第 3 步 剥去同轴电缆末端。

- RG-6/U

编织屏蔽 13

单位: mm

Technical line drawing of a mechanical assembly with no visible text or symbols

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