An assessment report on portable radio repeaters PDF used in areas with degraded radio coverage (e.g., indoor, subterranean and rural environments) has been published by the National Urban Security ...

The Department of Homeland Security (DHS) Science and Technology Directorate (S&T) is seeking solutions to the communications challenge of encountering weak radio or cellular coverage while conducting ...

There is a long history of spacecraft carrying ham radio gear, as the Space Shuttle, Mir, and the ISS have all had hams aboard with gear capable of talking to the Earth. However, this month, the ISS ...

The MRC-200 Tactical Repeater System is designed to extend the range of modern multiband handheld radios. The repeater is manportable, but it also can be installed in vehicles for mobile operations.

[Mark J Hughes] volunteers as a part of a local community fire watch which coordinates by radio. The La Habra Heights region of Los Angeles is an area of peaks and valleys, which makes direct radio ...

The circuit was designed to create an automatic repeater that would retransmit a received signal over the amateur radio frequency band. Repeater – a device that regenerates information at a higher ...

XM Radio faces more problems with the FCC. Previous editions of RF Report covered problems with FM adapters used with XM Radio and Sirius receivers, which were operating at power levels and on ...

Just when one might think there's nothing new in the world of ham radios, along comes digital, and it's being embraced due to its flexibility and is less bulky. Ham radio is a popular term for ...

Lakeland Fire Department has taken actions to prevent further "radio failure" during potential critical moments in emergency calls. Lakeland had deployed a mobile radio repeater in one of its two ...

A proposal by the Humboldt-Toiyabe National Forest to install a new radio repeater has raised the ire of hikers who say it would be a blight on an iconic Nevada peak. The proposal calls for a 20-foot ...