Telex ALP-450 instruction manual General Description, Average, Antenna Placement

8601 East Cornhusker Highway, P.O. Box 5579, Lincoln NE 68505

UHF Log Periodic Antenna

Order No. 71147000 PN802573

INSTRUCTION MANUAL

General Description

The ALP-450 is a broadband directional log peri- odic antenna. It will receive any frequency from 450 to 900 MHz. The “gain” of this antenna en- ables it to receive signals from a greater distance than a typical “whip” type antenna.

Log Periodic Antennas are also directional (like a TV antenna) and will have the best reception when pointed at the transmitter. This yields the benefit of less interference from unwanted signals coming from the back or side of the antenna.

	SPECIFICATIONS
	(average)
Gain	4.6 dBd
1/2 Power Beam Width	120°
Front-to-Back Ratio	19.4 dB
SWR	1.5:1
Input Impedance	50 ohm
Input Connector	TNC

Antenna Placement

The ALP-450 should be placed in a position that has a clear view of the transmitter(s) for best re- sults. Obstructions such as walls, ceilings, and metal objects will reduce range and performance.

Antenna Mounting

The ALP-450 is supplied with a variety of mount- ing hardware. It should always be mounted verti- cally with the arrows pointing toward the transmitter(s). See Figure 1.

Figure 1

Antenna Mounting

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