Manually Reducing The Uplink Gain; Bandpass Filter Adjustments In 800 Mhz Cellular Band Models; Table 7: Uplink Gain Offset Switch Positions - EMS EkoMini Operator's Manual

• The microprocessor normally maintains equal gain for both the uplink and
downlink paths.
• The manually operated attenuation switches can set the output power between
+6 and +20 dBm. However, if the output power is <+6 dBm due to a low input
signal level, then the switches will have no effect on the output power.
The user has additional control to reduce the uplink gain by 6 dB relative to the
downlink gain. This can be used in situations where the donor base station requires a
particular signal level from the repeater, so the repeater is "seen" by the base station
as a mobile unit, or to reduce noise contribution to the base station receiver.

5.2 Manually Reducing the Uplink Gain

If excessive noise is received in the BTS uplink receiver during repeater use, the
repeater uplink signal may be too strong. Up to 6 dB attenuation of the repeater UL
signal may be inserted by toggling switches 1 and 2 according to Table 7 below. Note:
This manual control overrides the automatic set-up software, and it unbalances the UL
gain compared to the DL gain.
UL Gain Offset
Relative to DL
0 dB
-2 dB
-4 dB
-6 dB
Be sure to press the "reset" button to make these changes effective.
5.3

Bandpass Filter Adjustments in 800 MHz Cellular Band Models:

5.3.1 EkoMini 800 MHz B Band Series:
Configuration switches 3 and 4 are used to minimize the gain of the control channels in
the adjacent Cellular A band by moving the position of the lower "skirt" of the repeater's
bandpass filter. Figure 10 illustrates this. The switches are set to position the 3-dB
EMS Wireless EkoMini Manual

Table 7: Uplink Gain Offset Switch Positions

Switch 1 Position
Off
On
Off
On
32
Switch 2 Position
Off
Off
On
On
EMS Wireless