A Canadian-developed tactical software-defined radio used by the U.S. Army, U.S. Marine Corps, and a number other countries, the AN/GRC-245, with the current version called the Enhanced High Capacity Line-of-Sight Radio (HCLOS), replaces the AN/GRC-226 radios in the AN/TRC-190 family of transmission assemblages. It is part of the Area Common User System Modernization (ACUS-Mod) variation on the Warfighter Information Network–Tactical (WIN-T) and JNN architecture, more compatible with the restructuring of the United States Army. The equipment has been in U.S. Army service since 2000. It is backwards-compatible with the AN/GRC-226, used in the Mobile Subscriber Equipment (MSE).
There are three major variants:
- AN/GRC-245 Enhanced Software Communications Architecture (SCA) radio
- AN/GRC-245 high power radio
- AN/GRC-245 Band IV radio
It operates in three freqency ranges:
- 225 to 400 MHz NATO Band I
- 1,350 to 2,690 MHz Band III+
- 4,400 to 5,000 MHz Band IV; this is upgradable to support IEEE 802.16 WiMax long-range wireless LAN technology, which also can provide cellular telephony
The initial version had 16 Mbps of bandwidth, growing to 34 Mbps in a Joint Tactical Radio System-compatible mode.
It was developed by Canadian Communication Research Center (CRC) in concert with Ultra Electronics. In addition, it is part of the UK Theatre Wide Communications Network in the Cormorant project, and the follow-on Falcon system. the AN/GRC-245 is also to be used by Taiwan. It has also been sold to India and Jordan. 
- Department of the Army (January 16, 2008), Procurement Programs, Committee Staff Procurement Backup Book, Fiscal Year (FY) 2009 Budget Estimates, Other Procurement, Army: Communications and Electronics Budget Activity 2
- "Cellular Reliance", Asian Military Review
- Communications Research Center, Industry Canada (June 2007), CRC-developed SDR technology deployed in commercial radios: Ultra Electronics ships new radios enabled by CRC’s Software Communications Architecture
- Ultra Electronics, Tactical Communications Systems