International Telemetering Conference Proceedings / October 25-28, 1999 / Riviera Hotel and Convention Center, Las Vegas, Nevada / In the past, typical telemetry systems for munitions and small missiles have often comprised adaptations of monolithic components originally conceived for aircraft or large missile applications. Programs have developed expensive monolithic systems to meet the needs of specific programs, but they often require extensive redesign for use by other potential users. The tri-service HSTSS Integrated Product Team (IPT) determined that a monolithic “one size fits all” approach has technical and fiscal risks. Thus, a modular approach to system development has been adopted. The HSTSS IPT is flight qualifying commercial microelectronic products designed for environments similar to that of munition interiors, and is developing microelectronic components required to complete a subminiature system. HSTSS components can then be integrated to support the form factor and measurement needs of any given user. In addition to offering a flexible system to the user, the HSTSS lends itself to upgradability (modernization through spares).