Technical Guide

SureCall | 48346 Milmont Drive, Fremont CA 94538 | 1-888-365-6283 | [e-mail]
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Configuration and Testing
Additive combination effects:
• Switch 1 (1 dB) + Switch 2 (2 dB) = 3 dB attenuation
• Switch 1 (1 dB) + Switch 2 (2 dB) + Switch 3 (4 dB) = 7 dB attenuation
• Switch 1 (1 dB) + Switch 2 (2 dB) + Switch 3 (4 dB) + Switch 4 (8 dB) = 15 dB attenuation
• Switch 1 (1 dB) + Switch 2 (2 dB) + Switch 3 (4 dB) + Switch 4 (8 dB) + Switch 5 (16 dB) = 31 dB attenuation
A few practical attenuation examples:
Important Note: Turn ALL uplink attenuations dip switches to ON and adjust them back one step at a time until uplink
connectivity is made with the Emergency Radio Tower.
• Turning all switches OFF = 0 dB attenuation (booster is at full gain).
• Turning ON switch #1 in a bank = 1 dB attenuation (booster maximum gain is reduced by 1 dB).
• Turning ON switches #1, 3, and 5 in a bank = 1+4+16 dB attenuation = 21 dB attenuation. For example, in an 80 dB
booster, the selected channel is reduced to 59 dB (80 dB -21 dB).
• Turning ON all switches in a bank = 1+2+4+8+16 dB attenuation = 31 dB attenuation. For example, in an 80 dB booster,
the selected channel is reduced to 49 dB (80 dB-31 dB).
When the BDA is powered on, the green Power Light (3) should
illuminate.
• If any of the bands are oscillating, the corresponding band lights
(1 and/or 2) will flash red and that band will eventually shut down
if adjustments are not made.
Note: In general, the uplink and downlink DIP switches should be set
identically but this is not always the case.
Switch 1 Switch 2 Switch 3 Switch 4 Switch 5
1 dB 2 dB 4 dB 8 dB 16 dB
UPLINK
DOWNLINK
1
2
4 8
16
1
2
4 8
16
1 2 3 4 5
PS-ULPS700-DL
1 2 4 8 161 2 4 8 16
1 2 3 4 5
1
2
3
ATTENUATION GREATER THAN 25 DB (EITHER MADE BY THE
BOOSTER’S DIP SWITCHES OR CUMULATIVE ADJUSTMENTS OF DIP
SWITCHES AND SOFTWARE) WILL CAUSE THE AFFECTED BAND TO
SHUT OFF AND DISPLAY A SOLID RED LED.