Editing Joint Tactical Radio System (section)

===JTRS Handheld, Manpack & Small Form Fit (HMS)===
JTRS HMS is a materiel solution meeting the requirements of the Office of the Assistant Secretary of Defense for Networks and Information Integration/DoD Chief Information Officer for a Software Communications Architecture (SCA) compliant hardware system hosting SCA-compliant software waveforms (applications).

The JTRS HMS contract was structured to address Increment 1, consisting of Phases 1 and 2. Increment 1, Phase 1 was to develop the [[AN/PRC-154]] Rifleman Radio sets and embedded SFF-A (one channel), SFF-A (two channel) and SFF-D (one channel) versions. The AN/PRC-154 Rifleman Radio sets and SFFs were to utilize the Soldier Radio Waveform (SRW) in a sensitive but unclassified environment (Type 2). In order to mitigate program waveform porting and integration challenges, the SRW application, which is managed by the JTRS Network Enterprise Domain, was developed on a Waveform Development Environment with HMS as the lead platform for porting.

Increment 1, Phase 2 was to develop the two channel manpack, two channel handheld, and embedded SFF-B, versions that are all Type 1 compliant for use in a classified environment. Waveforms on the phased sets include Ultra High Frequency (UHF) Satellite Communications, Soldier Radio Waveform (SRW), High Frequency (HF), Enhanced Position Location and Reporting System (EPLRS), Mobile-User Objective System (MUOS), and Single Channel Ground to Air Radio System (SINCGARS).