Designed to be deployed in 2100MHz UMTS and LTE systems, the Kaelus TMA2068 provides excellent system performance with full AISG capabilities.


  • Improved base station sensitivity through excellent noise figure performance and gain in the 2100 uplink band
  • Provides rejection in the RX input filter to 1800 and 2600 downlink frequencies
  • Fail-safe bypass mode with full lightning protection
  • Hardware & software configuration using AISG “personality” upload

technical specifications
downlink 2100 (tx) path
Passband2110 - 2170MHz
Return loss18dB minimum
Insertion loss0.3dB typical
Maximum input power with no damage320W (average) / 2kW (PEP)
Intermodulation @ antenna port-160dBc maximum with 2 x 20W carriers (in RX band)
uplink 2100 (rx) path
Passband1920 - 1980MHz
Nominal gain12dB
Gain variation over frequency, temperature±1dB maximum
Noise figure1.15dB typical mid band at 25ºC | 77ºF
Return loss18dB minimum operating, 15dB minimum in bypass mode
Bypass loss2.0dB typical mid band at 25ºC | 77ºF
Output IP3+28dBm typical
Maximum input power with no damage+12dBm maximum
uplink 2100 (rx) path rejection
RX filter rejection (relative to 1950MHz)
1805 - 1880MHz45dBc
2010 - 2025MHz25dBc
2050 - 2110MHz60dBc
2110 - 2170MHz65dBc
2400 - 2700MHz37dBc
2700 - 2900MHz57dBc
rms evm
U/L based on 20MHz LTE signal (100 resource blocks)1% maximum, 0.1% typical
D/L based on 20MHz LTE signal (100 resource blocks)1% maximum, 0.1% typical
RMS EVM U/L based on 5MHz UMTS signal1% maximum, 0.5% typical
RMS EVM D/L based on 5MHz UMTS signal1% maximum, 0.1% typical
power supply and alarm (current window alarm mode, default)
Current window alarm mode (CWA) is the default TMA operating mode and can be configured to specific customer requirements. The generic personality (F00V1) is configured so that both channels are independently powered and monitored via the respective BTS port. The 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 voltage7.5V to 30V DC, case is DC ground
DC supply voltage via BTS-RF cableEach BTS port powered individually (programmable)
DC supply current, normal mode100 ± 20mA per port
DC supply current, alarm mode180 ± 20mA per port (programmable)
DC supply current, alarm mode programmable range150 - 250mA
aisg mode of operation (auto selected on valid aisg 2.0 frames)
AISG signals can be applied to either BTS1 or BTS2 port. The TMA unit switches to AISG mode when valid frames are detected on one of the BTS ports. Both LNAs take DC power from the port with AISG frames or, if DC is present on both ports, both channels supply equal power to the TMA
DC supply voltage+8.5V to +30V DC
AISG version2.0 (1.1 optional)
Supply current, AISG mode200mA @ 7.5V, 55mA @ 30V typical
AISG connector, current ratingIEC60130-9, 8-pin female, < 4A peak, 2A continuous, pin 6
Field firmware upgradableYes
For further details of environmental compliance, please contact Kaelus.
Temperature range-40º to +65ºC | -40º to +149ºF
Ingress protectionIP67
Altitude3,000m | 10,000ft maximum
Lightning protectionIEC61312-1, RF: ±5kA maximum (8/20us), AISG: ±2kA maximum (8/20us)
MTBF>1,000,000 (hours)
ComplianceEMC:EN301 489, ETSI EN 300 019 class 4.1, RoHS
Dimensions H x D x W175 x 170 x 64mm | 6.89 x 6.69 x 2.52in (Excluding brackets and connectors
Weight3.2kg | 7.1lbs estimated
FinishPainted, light grey (RAL7035)
ConnectorsDIN 7-16 (F) x 4 long neck, AISG (F) x 1
MountingPole/wall bracket supplied with two metal clamps 45-178mm diameter poles
ordering information
Part NumberDescription
xx denotes customized CWA configuration
TMA2068F00V1-1Twin TMA 2100, with AISG, configured with generic CWA personality
TMA2068FxxV1-1Twin TMA 2100, with AISG, customised personality
electrical block diagram
mechanical block diagram