The TC5 module is intended for users seeking to fully exploit the available spectrum for the highest speeds of BLOS and HF surface wave communications. The TC5 can host wideband HF modem functions that fully comply with MIL-STD-188-110C App. D up to 24 kHz audio bandwidth. Furthermore, the TC5 can support V/UHF modem data rates up to 256 kbps in 48 kHz audio bandwidth. The TC5 still offers all the functionality found in the TC2. Further out into the future, the TC5 shall make available RapidM’s proprietary 4G-R family of HF/VHF modem waveforms. These shall provide network capability, and base/mobile TDMA modes for unparalleled connectivity and speed and TRANSEC and LPD ultra-robust communications.

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The TC2 is aimed at establishing an ultra-compact footprint family of embeddable modems for use in HF and V/UHF communication equipment. The TC2 offers the same functionality as the TC4-LP, namely HF and VHF/UHF data modems, 2G ALE and 3G ALE/STANAG 4538. The TC2 hardware can also host RapidM’s EF-256 embedded functions, which include Secure Digital Voice (SDV) and AES 256 encryption.

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The TC4-LP is a TC4 footprint compatible module optimised for low power consumption. In addition, RapidM has made available the EF-256 suite of embedded functions, which include Secure Digital Voice (SDV) using the HF-2 waveform and AES 256 encryption. These functions will also execute on the TC4-LP hardware and are properly integrated with the HF House architecture of the TC4-LP’s embedded software. The RapidM SDV is a game-changer for radio makers, as the clarity of the Vocoders and range of the modem are unsurpassed.

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When we designed the TC4 at RapidM, the aim was to provide a compact embedded modem solution to radio makers encompassing all the major standards in HF House, notably 2G ALE, MIL-STD-188-110B and STANAG 4538. That is why this modem module has found service in a variety of HF transceiver products over time. The TC4 has been largely superseded by the TC4-LP footprint compatible module and by the TC2 for new designs.

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