Telex UAD4 instruction sheet Antenna Requirements, Antenna Placement

Antenna Requirements

The UAD4 may be used with a variety of anten- nas. For best results, use a pair of ALP-450 di- rectional log periodic antennas. See Figure 4. The ALP-450 offers the best performance and broadest bandwidth available.

Good results may be obtained with optional CLA or FA-500 1/2 wave antennas.

The 1/4-wave antennas that are supplied with the Telex wireless systems will provide adequate performance in some situations. The 1/4-wave antennas should be oriented as shown in Figure

5.Do not use 1/4-wave antennas for remote mounting.

TelexR

ALP-450

THIS END TOWARD TRANSMITTER

ALP-450	CLA	FA-500
	1/2 Wave Antenna	1/2 Wave Antenna

Figure 4

Antennas

Antenna Placement

If antennas are mounted directly to the UAD4, they should be configured as shown in Figure 5.

Do not rack mount the UAD4 in this configu- ration. Serious loss of range and performance may occur.

Place the UAD4 with antennas in a location that is in direct view of the transmitters for best re- sults.

											90-260 VAC 50-60 Hz
INPUT A			OUTPUT A		POWER OUT				OUTPUT B		INPUT B
	1	2	3	4			1	2	3	4
					2	3
				1			4
					15 VDC						POWER

Figure 5

1/2 Wave Antenna Mounting

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