R
TELEXCOMMUNICATIONS,INC.
8601 East Cornhusker High way, P.O. Box 5579, Lin coln NE 68505
IN STRUC TION MAN UAL
Gen eral De scrip tion
The ALP-600 is a broad band bi-directional log pe ri odic an tenna. It will re ceive any fre quency from
520 to 760 MHz. The “gain” of this an tenna en ables
it to re ceive sig nals from a greater dis tance than a
typ i cal “whip” type an tenna.
SPEC I FI CA TIONS
(av er age)
ALP-600
UHF Log Pe ri odic An tenna
Or der No. 878896 801542
Log Pe ri odic An tennas are also di rec tional and
will have the best re cep tion when pointed at the
trans mit ter. This yields the ben e fit of less in ter fer ence from un wanted sig nals com ing from the back
or side of the an tenna.
Gain..................................................................................................................1.6 dBd
1/2 Power Beam Width.........................................................................................120°
Front-to-Back Ra tio...........................................................................................19.4 dB
SWR.......................................................................................................................1.5:1
In put Im ped ance ................................................................................................50 ohm
In put Con nec tor ....................................................................................................TNC
Size............................................................................12" (304.8mm) x 17" (431.8mm)
An tenna Place ment
The ALP-600 should be placed in a po si tion that
has a clear view of the trans mit ter(s) for best re sults. Ob struc tions such as walls, ceil ings, and
metal ob jects will re duce range and per for mance.
An tenna Mount ing
The ALP-600 is sup plied with hard ware for tu bu lar
clamp ing. It should al ways be mounted ver ti cally
with the ground and per pen dic u lar to the trans mit ter(s), See Fig ure 1.
T
elex
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TR-600
Fig ure 1
Mount ing Sug ges tions
Fig ure 2
ALP-600 An tenna Mast
ALP-600
TR-600's
COACHESBOX
Top View of Field
FOOTBALL
FIELD
Refer to Figure 4 for typical antenna pattern.
Fig ure 3
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ALP-600
An tenna Pat tern
Fig ure 4
Typ i cal ALP-600 UHF Bi-Directional An tenna Pat tern
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Clamps
Clamps are pro vided for mount ing the ALP-600
onto the an tenna mast. At tach the clamps with the
hard ware sup plied. See Fig ure 5.
Fig ure 5
Clamps
Coax Ca ble
Do not clamp the an tenna to hor i zon tal metal ob jects that ex tend past the clamp. This will de tune
the an tenna and cause loss of range and per for mance.
For best re sults, it is rec om mended that ca ble losses
be kept un der 4 dB. (Ev ery 3 dB of sig nal loss re sults in a sys tem op er at ing dis tance re duc tion of
25%).
AC CES SORIES
Spe cial Low Loss An tenna Ca bles
with TNC Con nects
Length Part No.
10 Ft. (3 me ters) 690419
25 Ft. (7.6 me ters) 71151-029
50 Ft. (15 me ters) 71151-050
75 Ft. (23 me ters) 71151-075
100 Ft. (30 me ters) 71151-100
A 10 ft coax ca ble (PN 690419) is in cluded with
the ALP-600.
elex
T
An tenna Mast
Four sec tions, clear an od ized alu mi num
mast with ex tended length of 90 1/4".
Or der No. 878897-1
PRINTED IN U.S.A.
Copy right© 1997 by Telex
TELEX COM MU NI CA TIONS, INC.
All rights re served.
July 1997
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