An tenna Re quire ments
The APD4+ may be used with a va ri ety of an -
ten nas. For best re sults, use a pair of LPA-500
di rec tional log pe ri odic an ten nas. See Fig ure 4.
The LPA-500 of fers the best per for mance and
broad est band width avail able.
An tenna Place ment
If an ten nas are mounted di rectly to the APD4+,
they should be con fig ured as shown in Fig ure 5.
Good re sults may be ob tained with op tional
CLA or FA-500 1/2 wave an ten nas.
The 1/4-wave an ten nas that are sup plied with
EV wire less sys tems will pro vide ad e quate per -
for mance in some sit u a tions. The 1/4-wave an -
ten nas should be ori ented as shown in Fig ure 5.
Do not
use 1/4-wave an ten nas for re mote
mount ing.
Do not rack mount the APD4+ in this con fig -
u ra tion. Se ri ous loss of range and per for -
mance may oc cur.
Place the APD4+ with an ten nas in a lo ca tion
that is in di rect view of the trans mit ters for best
re sults.
-4-
LPA-500
THIS END TOWARD TRANSMITTER
R
LPA-500
CLA
1/2 Wave An tenna
INPUT A
OUTPUT A
1
2
3
4
OUTPUT B
1
2
3
4
INPUT B
POWER
90-260 VAC 50-60 Hz
POWER OUT
1
2
3
4
15 VDC
Fig ure 5
1/2 Wave An tenna Mount ing
Fig ure 4
An tennas
FA-500
1/2 Wave An tenna
