Telex ALP-450 - Manual

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.
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.
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.
-1-
8601 East Cornhusker Highway, P.O. Box 5579, Lincoln NE 68505
UHF Log Periodic Antenna
Order No. 71147000
PN802573
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
Figure 1
Antenna Mounting