Interoperability gateway connecting conventional analog VHF-UHF radios with Rajant InstaMesh or TrellisWare TSM-X IP tactical mesh networks via audio-to-IP packet conversion with MELP 2400 bps encoding, under 80 ms latency, 4 simultaneous radio ports, web configuration without specialized tools, and PoE+ power for legacy radio fleet integration into modern mesh networks.
Polo Marconi
Polo Marconi Mesh Gateway Interoperability Gateway Between Analog VHF-UHF Radio Networks and IP Tactical Mesh Networks for Legacy Integration
Technical specifications
Technical overview
The Polo Marconi Mesh Gateway is the interoperability gateway designed to resolve the most frequent technology transition problem in Armed Forces and security organizations modernizing their communications infrastructure: the fleet of conventional analog VHF/UHF radios represents tens of millions of dollars in amortizable investment with 15-20 year useful life, while the new IP tactical mesh network architecture (Rajant, TrellisWare, Persistent Systems) provides data and video capabilities that analog radios don't support — but migrating the entire fleet to new digital terminals in a single budget cycle is not feasible.
The Mesh Gateway converts the analog voice transmissions of conventional VHF/UHF radios (bands 30-88 MHz and 136-174 MHz for VHF, 225-400 MHz for UHF) into IP voice packets encoded with MELP (Mixed Excitation Linear Prediction) at 2400 bps — the standard military vocoder that maintains voice intelligibility in combat noise environments at very low bit rates compatible with the available bandwidth in tactical mesh networks — and injects them into the IP mesh network as virtual radio nodes. The user of a TrellisWare TSM-X node or a Rajant BreadCrumb node can speak directly with the analog radio operator without either of them changing equipment or learning new procedures.
The analog-to-IP conversion latency of under 80 ms meets the voice intelligibility requirement for combat communications — above 150 ms latency is perceptible and degrades tactical coordination — and MELP encoding guarantees intelligibility in vehicle engine noise and combat environment without post-processing. The 4 independent radio ports allow connecting 4 analog radios from different bands simultaneously, routing each as an independent channel in the mesh network to specific talk groups.
Key features
Applications
Related products
20 W multiband portable radio VHF 30-108 MHz and UHF 225-512 MHz with HAVE QUICK II frequency hopping, AES-256 encryption, air-ground fire coordination, and SINCGARS compatibility for infantry tactical communications and close air support coordination.
View details →Polo MarconiTactical satellite communications terminal compatible with Iridium Certus and Inmarsat BGAN providing low-latency voice, IP data up to 704 kbps, and satellite PTT with PACE configuration in a 4.2 kg backpack, deployable in 3 minutes by one operator, for command strategic communications in areas without any terrestrial system coverage.
View details →Polo MarconiComprehensive technical guide to Rajant's BreadCrumb family for defense operations: InstaMesh architecture, ATAK integration, LynX roles in dismounted operations, island mode for jungle and highlands, and EAR acquisition considerations for Peru.
Technical analysis of TrellisWare CHAOS for data links between ISR drones and tactical ground networks. Wideband MIMO OFDM, ATAK and TSM-X integration, applications in VRAEM and border surveillance.
Local technical support
EMAR SYSTEMS provides integration, training, and after-sales support for all represented products. Contact the technical team for specifications, demos, and quotes.
125-watt HF SSB/AM/FSK transceiver covering 1.6-30 MHz with 3rd generation ALE MIL-STD-188-141C, 2400 bps STANAG 4285 16QAM data modem, COMSEC KY-57-VINSON compatible slot, 50-ohm NVIS automatic antenna coupler, and MIL-STD-188-148 channeling for brigade command post and national backup communications without network infrastructure.