Designed to be deployed in co-located 850MHz and 1900 networks, the Kaelus TMA2100 provides gain in the 850 uplink and in the 1900 uplink, using independent LNAs per band and per channel. Low loss bypass of AWS and 700L bands for non-intrusive PIM testing are also provided.


  • Improved base station sensitivity through excellent noise figure performance and linearity
  • AISG 2.0 compatible, full software upgradable using AISG “personality” upload
  • DC/AISG passthrough to PCS antenna
  • AISG OUT connector disabled when AISG device (SBT equipped antenna) present on PCS antenna
  • One AISG subunit per LNA, 4 in total. All fixed gain.
  • Passive AWS band and 700L band response for feedline/antenna non-intrusive PIM testing

technical specifications
Band Name8501900
Passband869 - 894MHz1930 -1990MHz
Insertion loss0.5dB typical0.6dB typical
Return loss22dB typical
Maximum input power200W average80W average (UMTS)
Intermodulation products-155dBc maximum at antenna port with 2 x 20W carriers (in RX band)
Passband824 - 849MHz1850 - 1910MHz
Gain variation±1dB maximum
Return loss22dB typical
Bypass return loss14dB typical
Bypass loss2.5dB typical
Noise figure1.2dB typical1.4dB typical
Output IP3+26dBm typical+28dBm typical
Maximum input power with no damage+12dBm
aws band non-intrusive pim testing
Passband1695 - 1780MHz & 2110 - 2200MHz
Insertion loss0.3dB typical
Return loss20dB typical
Maximum input power80W average
700l band non-intrusive pim testing
Passband550 - 746MHz
Insertion loss0.3dB typical
Return loss20dB typical
Maximum input power80W average
power supply and alarm (current window alarm mode, default)
Current window alarm mode (CWA) is the default operating mode and can be configured to specific customer requirements. The TMA2100 is configured so that all LNAs are powered regardless of which BTS port has DC power. If DC is applied on only one port, the normal DC supply current will exceed the value tabled below. Please contact Kaelus for more information.
DC supply voltage+8.5 to +18V DC, case is DC ground
DC supplyEach BTS port powered individually
DC supply current, normal mode200mA per port typical (both ports are powered)
DC supply current, alarm mode300mA per port typicall (both ports are powered)
aisg mode of operation (auto selected on valid aisg 2.0 frames)
AISG signals can be applied to either BTS port. The TMA unit switches to AISG mode when valid frames are detected on either BTS port. All LNAs take DC power from the port with the AISG frames or, if DC is present on both ports, power will be supplied equally between the ports. Each LNA is controlled uniquely by its sub-unit number.
DC supply voltage+7.5V to +30V DC
AISG version2.0 (1.1 optional)
Supply current, AISG mode500mA @ 7.5V, 135mA @ 30V typical
AISG connector, current ratingIEC60130-9, 8-pin female, < 4A peak, 2A continuous, pin 6
Field firmware upgradableYes
AISG pass through to antenna portYes
antenna aisg and dc
When DC is applied to the TMA, it is initially switched through to ANT1 port. If a nominal DC current is measured (<2A), DC and AISG are passed through the ANT1 port for antenna AISG control and AISG OUT - 8PIN connector is disabled. If a short circuit is present (>4A) the ANT1 port is disabled and DC and AISG is passed to the AISG OUT port. If a nominal load is measured on the AISG OUT, DC and AISG are passed out the AISG OUT port for antenna AISG control through an external AISG cable. If the AISG OUT port is also a short circuit,the AISG OUT port is also disabled. After AISG routing is determined monitoring of the DC and AISG continues, a short circuit on either enabled port will shut down the affected port, if ANT1 port is shut down DC and AISG will be routed to the AISG OUT port if available.
Mode of OperationExpected load
ANT1 port
Expected load
ANT AISG control via ANT1 port50ohms termination (ie antenna) or open circuit
See Note 1
Any load possible
Short preferred
See Note 2
AISG capable device available via RF portDC and AISG will be supplied to ANT1 port. DC and AISG is disabled from the AISG OUT port
ANT AISG control via AISG OUT portShort circuit50ohms termination (ie antenna RET cable/device) or Open circuitAISG capable device available via external RET cableDC and AISG will not be supplied to ANT 1 port. DC and AISG are supplied to the AISG OUT port
ANT AISG disabledShort circuitShort circuitFault or short circuit present on AISG circuitsAISG disabled for both ANT1 and AISG OUT port. Note TMA continue to operate while DC is applied to BTS ports
Note1: Expected current drawn <2A. If the current rises above 2A but remains below 4A, the current will continue to be monitored for a further 15 seconds. If it remains above 2A after 15 seconds the DC/AISG will be disabled
Note 2: To re-enable the DC/AISG feed on ANT1 and/or AISG port, the TMA will need to be re-started.
Feature TWIN
2 IN / 4 OUT
4 IN / 8 OUT
Dimensions H x D x W272 x 139 x 280mm | 10.7 x 5.5 x 11in272 x 283 x 280mm | 10.7 x 11.1 x 11in
Weight12.5kg | 27.56lbs25kg | 55.12lbs
FinishPainted, light grey (RAL 7035)
ConnectorsDIN 7-16(F), AISG(F)
MountingPoll/wall bracket supplied with two metal clamps 45-178mm diameter poles
For further details of environmental compliance, please contact Kaelus.
Temperature range-40ºC to +65ºC | -40°F to +149°F
Ingress protectionIP67
Altitude3,000m / 10,000ft
Lightning protectionIEC61312-1, RF: ±5kA maximum (8/20us), AISG: ±2kA maximum (8/20us)
MTBF>1,000,000 hours
ComplianceFCC Part 15 subpart B
ordering information
Part NumberConfigurationOptional FeaturesConnectors
TMA2100F03V4-1A TWIN 2 in / 4 outSTANDARDDIN 7-16 (F)
TMA2100F03V4-2A QUAD 4 in / 8 outSTANDARDDIN 7-16 (F)
electrical block diagram
NOTE: PORT 3 "+B1/+B1" AIGS OUT (1900 BAND) is ANT1 on this electrical diagram
mechanical block diagram