LAST TIME BUY: 31/12/2021

Designed to be deployed in co-located 1800, 2100 and low band (698-960) systems with wideband antennas the Kaelus TMA2077 provides internal multiplexing in all three bands with gain in the high bands, thereby saving capital expenditure and tower leasing fees.


  • Improved base station sensitivity through gain in the 1800 and 2100 uplink bands
  • Internal duplexing of 698-960MHz signals to be passed to additional ANT ports
  • Internal duplexing of 1800 and 2100MHz bands
  • AISG2.0 compatible, hardware & software configuration using AISG “personality” upload
  • DC/AISG bypass onto ANT 850 main (Optional)
  • Excellent noise figure performance

technical specifications
Band Name 1800 2100
Passband 1805 - 1880MHz 2110 - 2170MHz
Insertion loss 0.6dB typical 0.4dB typical
Return loss 18dB minimum
Maximum input power 200W (average) / 2kW (PEP) 120W (average) / 2kW (PEP)
Intermodulation @ antenna port -150dBc, (3rd order) in RX band with 2 x 20W carriers -160dBc maximum, (7th order) in RX band with 2 x 20W carriers
Passband 1710 - 1785MHz 1920 - 1980MHz
Gain 12dB
Gain variation ±1dB maximum
Return loss 18dB min operating, 12dB in bypass
Bypass loss 2.5dB typical 2.9dB typical
Noise figure 1.25dB typical 1.35dB typical
Output IP3 +24dBm minimum
Maximum input power with no damage +12dBm
low band bypass path
Passband 698 - 960MHz
Return loss 18dB minimum
Insertion loss 0.2dB typical
Maximum input power with no damage 120W (average) / 2kW (PEP)
Intermodulation @ antenna port -150dBc maximum with 2 x 20W carriers
Impedance 50Ohms
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 voltage 7.5 to 30V DC, case is DC ground
DC supply current, normal mode 150 ± 15mA per port
DC supply current, alarm mode 220 ± 20mA per port
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 +7.5V to +30V DC
AISG version 2.0
Supply current, AISG mode 305mA @ 7.5V, 75mA @ 30V typical
AISG connector, current rating IEC60130-9, 8-pin female ,< 4A peak, 2A continuous, pin 6
Field firmware upgradable Yes
autosensing function on ant1 low band port (f01v2-1, aisg mode only)
When a valid AISG signal is applied to either of its BTS ports, the TMA (F01V2) enters AISG mode and applies DC/AISG to the ANT1 LOWBAND port. If a low resistance is detected DC is disconnected from the ANT1 LOWBAND port. The autosensing switch is open in CWA mode and no DC is passed to the ANT1 port.
Mode of operation Current draw on ANT1 port Assumption “Autosense + Protection” switch status Comment
CWA mode Any Unit in CWA mode Open No DC will be passed on to ANT1
AISG mode Current<4A Device present or open circuit on ANT1 Close AISG signal (sub-carrier) will be supplied thru to ANT1
AISG mode Current >4A DC short circuit or low DC resistance present on ANT1 port Open Attempts are made periodically to re-connect.
For further details of environmental compliance, please contact Kaelus.
Temperature range -40ºC to +65ºC | -40°F to +155°F
Ingress protection IP67
Lightning protection IEC61312-1, RF: ±5kA maximum (8/20us), AISG: ±2kA maximum (8/20us)
MTBF >1,000,000 hours
Compliance EMC:EN301 489, ETSI EN 300 019 class 4.1, RoHS
Dimensions H x D x W 300 x 250 x 95mm | 11.81 x 9.84 x 3.74in (excluding brackets and connectors)
Weight 10.5kg | 23.1lbs
Finish Painted, light grey (RAL7035)
Connectors RF: 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
TMA2077F00V1-1 TWIN 2 in / 4 out Configured with generic personality DIN 7-16 (F)
TMA2077F01V2-1 TWIN 2 in / 4 out DC/AISG to ANT850 main DIN 7-16 (F)
TMA2077FxxV1-1 TWIN 2 in / 4 out xx denotes customized CWA configuration DIN 7-16 (F)
electrical block diagram
mechanical block diagram