Designed to be used at co-located 700MHz and AWS sites, the Kaelus TMA2043 provides internal diplexing of the two bands. External diplexers and feeders are no longer required, resulting in decreased hardware costs, environmental impact and tower licensing fees.


  • LTE ready
  • AISG 2.0 compatible, fully software upgradable
  • Provides gain in the AWS path and bypass to 700MHz frequencies
  • Excellent noise figure performance
  • Full lightning protection and fail safe bypass mode

technical specifications
downlink aws (tx) path
Passband 2110 - 2180MHz
Insertion loss 0.2dB typical
Return loss 18dB minimum
Maximum input power 500W (average) / 5kW (PEP)
uplink aws (rx) path
Passband 1710 - 1780MHz
Nominal gain 12dB minimum
Noise figure 1.1dB typical
Return loss 18dB minimum operating, 15dB minimum in bypass mode
Bypass loss 2.1dB typical
Output IP3 +26dBm typical
Rejection @ 1700MHz 25dB minimum
Rejection @ 1800MHz 14dB minimum
700 mhz bypass
Passband 698 - 746MHz
Insertion loss 0.2dB typical
Return loss 18dB minimum
Maximum input power 500W (average) / 5kW (PEP)
Attenuation in AWS band 80dB minimum
Impedance 50ohms
Intermodulation products -155dBc maximum in Rx band with 2 x 20W carriers
general specifications (measured in 180khz bandwidth)
Phase linearity, 700 & AWS 0.02° typical
Group delay variation, 700 & AWS 0.8ns typical
Amplitude variation, 700 & AWS 0.02dB typical
power supply and alarm (current window alarm mode, default)
CWA is the default TMA operating mode and can be configured to specific customer requirements. The TMA is configured so that each BTS port is individually powered and monitored. Each BTS port sinks additional current to indicate an alarm state in its uplink path. Normal operating and alarm current values are configured independently and are alterable via a field-loadable personality file, contact Kaelus for more information.
DC supply voltage +7.5V to +30V DC, case is DC ground
DC supply Through BTS connector
DC supply current, normal mode 100 ± 20mA per port
DC supply current, alarm mode 200 ± 30mA per port
power consumption
Normal operation 0.85W @ 7.5V, 3W @ 30V typical
Alarm mode 3W @ 15V per port typical
aisg mode of operation (auto selected on valid aisg 2.0 frames)
AISG signals can be applied to either BTS0 or BTS1 port. The TMA unit switches to AISG mode when valid frames are detected on one of the BTS ports. The TMA unit is DC powered (common feed for both channels) from the port supplying the AISG frames.
DC supply voltage +7.5V to +30V DC, case is DC ground
AISG version 2.0 (1.1 optional)
Supply current, AISG mode 200mA @ 7.5V, 65mA @ 30V typical
Voltage drop, BTS to AISG port 1.5V maximum at 2A
Power consumption, AISG mode 1.5W @ 7.5V, 2W @ 30V typical
AISG connector, current rating IEC60130-9, 8-pin female / < 4A peak, 2A continuous, pin 6
For further details of environmental compliance, please contact Kaelus.
Temperature range -40º to +65ºC | -40º to +149ºF
Ingress protection IP67
Lightning protection IEC61312-1, RF: ±5kA maximum (8/20us), AISG: ±2kA maximum (8/20us)
MTBF >700,000 (hours)
Compliance FCC Part 15 subpart B, Ingress ETSI EN 300 019 class 4.1, EMC: EN301 489 ,RoHS
Dimensions H x D x W 284 x 181 x 89mm | 11.18 x 7.14 x 3.5in (excluding brackets and connectors)
Weight 9kg | 20lbs
Finish Painted, light grey (RAL7035)
Connectors DIN 7-16 (F) x 6 long neck
Mounting Pole/wall bracket supplied with two metal clamps 45-178mm diameter poles
ordering information
Part Number Configuration Optional Features Connectors
Contact Kaelus for options.
TMA2043F03V1-1D TWIN 2 in / 4 out Configured with AT&T personality,pole mounting bracket DIN 7-16 (F)
electrical block diagram
mechanical block diagram