Tactical SATCOMS from military radios

Inmarsat’s L-TAC service enables a Tactical UHF Satellite (TACSAT) experience for both military and non-military government radio network users, through the combination of Inmarsat’s L-band satellite network, a Slingshot frequency converter and a Spectra portable L-band antenna.

The service can be leased for a fixed period (minimum one month) and provides a complementary service to existing UHF/VHF SATCOM channel availability.

The SlingShot applique, combined with Inmarsat’s L-TAC lease service, is fully flexible and designed to meet security and reliability requirements, cost-effectively. Once deployed, remote management and support is provided through a 24/7 network operation centre.

The service offers a combination of reliable voice and data connectivity that is available globally, independently of local infrastructure. It is also quick to set up, providing a fully configured solution, which needs minimal user intervention before deployment.

  • Voice and data BLOS
    Achieve beyond-line-of-sight (BLOS) communications without having to re-equip or re-train. By converting in-service UHF and VHF radios into SATCOM devices, SlingShot delivers BLOS voice and data communications – and extends rangefrom tens to hundreds of thousands of miles.
  • COTM
    SlingShot has Manpack, Vehicle, Maritime and Aviation configurations. The omni-directional antennas mean that communications on-the-move (COTM) is truly effective.Vehicle testing has been successful at speeds in excess of 80mph, with no loss of signal or quality, and maritime speeds of 40 knots, with high-force turns that have been reached with no loss of service.
  • Radio agnostic and transparent
    Converts in-service UHF & VHF radios to L-band SATCOM, enabling interoperability between agencies without any change to in-service equipment or security. The radio operates in exactly the same way as it does in line- of-sight mode, providing a significant range extension. Depending on the satellite option chosen, this could be many thousands of miles within a single satellite footprint or globally, if switched between satellites.
  • Flexible airtime leasing
    Vastly reduce the cost of SATCOM by using L-band commercial SATCOM and only leasing the service in the areas you require, for the time period you require.
  • Infrastructure independent
    With Inmarsat’s I-4 constellation of satellites, it doesn’t matter where in the world you deploy or what distance you need to maintain voice and data communications.
  • Small size and weight with low power consumption
    Real estate on mounted platforms is limited and dismounted personnel face a great challenge if technology reduces the amount of food, water and supplies that can be carried. The SlingShot footprint is minimal and the Manpack system can take power from radio batteries, which means the operator isn’t required to purchase or carry different battery types and support different charging systems.
  • Complements existing military capacity
    Many modern operations include coordination with multiple agencies, some of which will have different radio systems. Slingshot can bring these disparate systems together without additional re-equipping and without a heavy training tariff.
  • Support UHF and VHF military and commercial frequencies
    VHF and UHF radios of different manufacture can use Slingshot to convert to BLOS devices that can communicate with each other. Systems are available for Manpack, Vehicle and Maritime and Aviation, meaning travelling teams can maintain contact.

Terminals & specifications

UHF Military Band Manpack UHF Military Band Vehicular / Maritime VHF Military Band Manpack VHF Military Band Vehicular / Maritime VHF Commercial Band Manpack VHF Commercial Band Vehicular / Maritime
Spectra Part Number SG-SS-1002 SG-SS-1001 SG-SS-1004 SG-SS-1003 SG-SS-1006 SG-SS-1005
Input Frequency Band 240-311MHZ 240-311MHZ 58-88MHZ 58-88MHZ 144-174MHZ 144-174MHZ
Size(mm) 170 x 75 x 30 170 x 87 x 30 204 x 75 x 30 204 x 87 x 30 170 x 75 x 30 170 x 87 x 30
Weight(g) 507 489 605 550 507 489
Colour Matt Black Matt Black NATO Green NATO Green Matt Grey Matt Grey
RF Power Input Required 2 - 4 Watts 2 - 4 Watts 3 - 10 Watts 3 - 10 Watts 3 - 10 Watts 3 - 10 Watts
Ingress Protection iP67
Approvals CE MIL-STD - 810G MIL-STD - 461F
Environmental -26°to+58°C Operating
Connectors DC Power: LEMO RF Input: TNC RF Output: SMA
L-band Vehicular Antenna L-band Maritime Antenna L-band Manpack Antenna L-band Aviation Antenna
Short title Ae-V Ae-MT Ae-M Ae-A
Spectra Part Number SG-SS-2001A SG-SS-2002 SG-SS-2003 SG-SS-2004
Size(mm) 146 x 72 150 x 142 76 x 153 111 x 143 x 38
Weight(g) 667 705 305 385
Approvals FCC Part15
Canada 310
DTM:Inmarsat 1401
FCC Part15
Canada 310
DTM:Inmarsat 1401
FCC Part15 N/A
DTM:Inmarsat 1401
TSO-C132 in progress
Colour Khaki Grey Khaki White
Standard Mounts Mag-Mount Base Pole-Mount Bracket Screw Mount ARINC-743 footprint
Optional Mounts Antenna Mount Clamp Set Antenna Mount Clamp Set Antenna Mount Clamp Set
Elevated Pole Set
Extendable System
Frequency Range 1525 to 1660 MHZ
PSU - Vehicle / Maritime Battery Cop 2590 & 5590 Battery Cop MBITR & 152 Ops room Main cvtr.
Short title PSU-VMT BC-2590 / 5590 BC-MBITR / 152 PSM-AC
Spectra Part Number SG-SS-3001 SG-SS-3009-0.5
Input Power 12 - 24 V DC Standard 5590 / 2590
Battery interface
Standard MBITR / 152
Battery interface
100 - 240V AC
Size(mm) 140 x 91 x 58 119 x 70 x 33 67 x 93 x 53 139 x 53 x 32
Weight(g) 509 325 183 247
Colour Black
Ingress Protection IP67 IP55(when connected) IP67(when connected) IP41(indoor only)
Approvals CE Mil-Std-810 MIL-Std-461F CE
Environmental -26&deg to +58&degC Operating indoor use only
Connectors DC Input Bulgin MicroBuccaneer
DC Output: Bulgin
DC Power: LEMO AC in: C13 IEC
DC Output: Bulgin