TWIN TMA 700/850

Designed to be deployed in 700, 850MHz shared antenna systems, the Kaelus TMA2105F01V1-1 provides gain at both the 700MHz and 850MHz uplink bands


  • Improved base station sensitivity
  • Internal diplexing of the 700MHz and 850MHz bands allows for single ANT and BTS ports
  • Fail safe bypass mode with lightning protection
  • Rejection of digital TV broadcast channels
  • High linearity and low noise performance

technical specifications
Band Name 700 850
Passband 768 - 803MHz 875 - 890MHz
Bandwidth 35MHz 15MHz
Insertion loss 0.4dB typical 0.45dB typical
Return loss 18dBminimum
Group delay variation 40ns maximum across band 30ns maximum across band
Absolute group delay 80ns maximum
Maximum input power 120W (average) / 1.5kW (PEP) 160W (average) / 3.2kW (PEP)
Intermodulation products -150dBc maximum with 2 x 20W carriers (in RX band) -150dBc maximum with 2 x 20W carriers (in RX band)
Nominal propagation delay 52ns 50ns
Passband 713 - 748MHz 830 - 845MHz
Bandwidth 35MHz 15MHz
Gain 17dB 15.5dB minimum
Gain maximum 18dB 16.5dB
Gain minimum 16dB 14.5dB
Gain variation ±1dB maximum
Return loss 18dB minimum
Bypass return loss 12dB minimum
Bypass loss 2.6dB typical, 3.6dB maximum 3.1dB typical, 3.6dB maximum
Noise figure 1.2dB typical, 1.6dB maximum 1.5dB typical, 2.0dB maximum
Output IP3 +32dBm typical +32dBm typical
Maximum input power with no damage +24dBm maximum +24dBm maximum
Absolute group delay 250ns maximum 350ns maximum
Group delay variation 150ns maximum 200ns maximum
Nominal propagation delay 139ns 216ns
P1dB +16dBm minimum
RX in filter rejection @ 50 - 694MHz (DTV) 55dB 55dB
RX in filter rejection 820 - 825MHz (Land mobile radio) 50dB 50dB
RX in filter rejection @ 847.5 - 852MHz (STL) 25dB 25dB
RX out filter rejection @ 50 - 694MHz (DTV) 28dB 28dB
Impedance 50Ohms
System attenuation 65dB @ 50 – 694MHz (DTV)
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 F01V1 personality 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 via a field-loadable personality file. Please contact Kaelus for more information.
DC supply voltage 8.5V to 30V DC, case is DC ground
DC supply voltage via BTS-RF cable Through BTS connectors
DC supply current, normal mode 150 ± 20mA per port
1.3W @ 8.5V, 4.5W @ 30V typical
DC supply current, alarm mode programmable range 220 ± 20mA per port
3.3W @ 15V per port typical
aisg mode of operation (auto selected on valid aisg 2.0 frames)
AISG signals can be applied to either BTS1 or BTS2 ports. The TMA2105F01V1-1 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 TMA2105F01V1-1.
DC supply voltage +8.5V to +30V DC
AISG version 2.0 (1.1 optional)
Supply current, AISG mode 220mA @ 8.5V, 70mA @ 30V typical
Voltage drop, BTS to AISG port 1.5V maximum at 2A
Power consumption, AISG mode 1.9W @ 8.5V, 2.1W @ 30V typical
AISG connector, current rating < 4A peak, 2A continuous, pin 6
Field firmware upgradable Yes
antenna aisg ook + dc
When a valid AISG signal is applied to either of the BTS ports, the TMA2105F01V1-1 communicates in AISG mode and applies DC/AISG to the ANT1 port. If a low resistance is detected on ANT1 port, DC/AISG is subsequently disconnected from the ANT1 port. In CWA mode, the autosensing switch is open and no DC will be passed ANT1.
Mode of Operation Current Draw on
ANT1 Port
Assumption "Autosense + Protection"
Switch Status
AISG or CWA Current<4A Device present or
open circuit on ANT1
unit in AISG mode
Close AISG signal (sub-carrier) will be supplied thru to ANT1
AISG or CWA Current>4A DC short circuit or low
DC resistance present
on ANT1 port
Open Attempt are made
periodically to re-connect
TMA2105FxxVx-1 will operate in AISG mode.
AISG or CWA ANY Unit in CWA mode Open No DC will be passed on to ANT1
For further details of environmental compliance, please contact Kaelus.
Temperature range -10ºC to +55ºC | +14°F to +131°F
Ingress protection IP67
Altitude 2,600m | 8,530ft
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 457 x 275 x 208mm | 18 x 10.8 x 8.2in
Weight 25kg | 55lbs estimate
Finish Powder coated, light grey (RAL7035)
Connectors DIN 7-16 (F) x 4 long neck, AISG (F) x 1
Mounting Pole/wall bracket supplied with two metal clamps 55-178mm diameter poles
ordering information
Part Number Configuration Optional Features Connectors
TMA2105F01V1-1 TWIN 2 in / 2 out AISG + DC pass through to ANT1 DIN 7-16 (F)
electrical block diagram
mechanical block diagram