Integrated, Intra-Squad Radio

The Integrated, Intra-Squad Radio (IISR) is a secure handheld 2-way radio, produced by Motorola for the US Marine Corps.[1] Its intended purpose is squad-level communications during urban warfare. The USMC ordered 60,000 radios to be used until replaced by the more complex Joint Tactical Radio System (JTRS) cluster 5 spiral 2 radio in 2013.[2] However, JTRS was cancelled in October 2011.[3] The IISR is similar in form and function to a Motorola XTS 2500i[4] with embedded encryption module, which was essential to provide secure voice communications, especially in war zones.

Sources

Hello, Moto: $76M for Intra Squad Radios
Military & Aerospace Electronics - Marine Corps awards contract for 60,000 infantry handheld radios
McGarry, Brendan; Capaccio, Anthony (October 14, 2011). "Boeing Army Radio Program Canceled by Pentagon as Costs Rise". Bloomberg Business. Retrieved February 27, 2015.
"XTS 2500 2500 Digital Portable Radio" (PDF). Motorola. Archived from the original (PDF) on 27 February 2015. Retrieved 27 February 2015.

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[1] Hello, Moto: $76M for Intra Squad Radios

[2] Military & Aerospace Electronics - Marine Corps awards contract for 60,000 infantry handheld radios

[bbus-canceled-3] McGarry, Brendan; Capaccio, Anthony (October 14, 2011). "Boeing Army Radio Program Canceled by Pentagon as Costs Rise". Bloomberg Business. Retrieved February 27, 2015.

[moto-xts2500-4] "XTS 2500 2500 Digital Portable Radio" (PDF). Motorola. Archived from the original (PDF) on 27 February 2015. Retrieved 27 February 2015.