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Displaying 1081 - 1090 of 1786

UHF Radio Propagation Data for Low Antenna Heights: Volume I

Report ID
ESSA Technical Report ERL 134-ITS 93-1
November 01, 1969
L. G. Hause, F. G. Kimmett, J. M. Harman
Abstract

This report is a presentation in two volumes of measurement techniques, data, comparisons, and conclusions obtained from a UHF propagation measurement program at 230 and 415.9 MHz. Antenna heights were 3 m or less above ground. Vertical polarization was used, and the antennas were omnidirectional in the horizontal plane. The terrain was generally rocky, hilly, and relatively free of trees. Path lengths varied from 2 to 45 km. Volume 1 describes the equipment, techniques, and results and presents data from the Wyoming area, including some buried antenna tests. Volume II presents data obtained in Idaho and Washington.

Meteor Burst System Communications Compatibility

Report ID
NTIA Report 89-241
March 01, 1989
David Cohen, William Grant, & Francis Steele
Abstract

The technical and operating characteristics of meteor burst systems of importance for spectrum management applications are identified. A technical assessment is included, which identifies the most appropriate frequency sub-bands within the VHF spectrum to support meteor burst systems. The electromagnetic compatibility of meteor burst systems with other equipment in the VHF spectrum is determined using computerized analysis methods for both ionospheric and groundwave propagation modes. It is shown that meteor burst equipment can cause and are susceptible to groundwave interference from other VHF equipment. The report includes tables of geographical distance separations between meteor burst and other VHF equipment which satisfy interference threshold criteria includes tables of geographical distance separations between meteor burst and other VHF equipment which satisfy interference threshold criteria.

U.S. Broadband Availability June 2010 - June 2012

May 13, 2013

This report on the availability of broadband, authored by NTIA, is the first in a series of Broadband Briefs that uses publicly available data collected by the Department of Commerce to examine broadband availability in greater detail.  This report uses current data from the June 30, 2012 State Broadband Initiative (SBI) dataset, which is the same data that populates the National Broadband Map (NBM), as well as historical data from June 2010 and June 2011.

Statement of FirstNet Board Member Ed Reynolds

May 08, 2013

“I was not able to be on the Board call today, but I am in full support of the FirstNet Board resolution establishing a committee to thoroughly review the issues raised by Sheriff Fitzgerald at last month’s Board meeting.  While I haven’t seen any basis for these allegations, I do respect Sheriff Fitzgerald’s right to raise issues that he genuinely believes are important to ensure that the FirstNet Board properly discharges its duties.

Topics

05/08/2013 FirstNet Board Special Meeting Agenda

May 07, 2013

First Responder Network Authority
Board Meeting Agenda
May 8, 2013
VIA TELECONFERENCE
4:30 pm – 5:30 pm

This special meeting of the First Responders Network Authority (FirstNet) Board is called consistent with Section 4.02 of FirstNet’s Bylaws.   Members of the public may listen to the teleconference by dialing 1-888-469-1931 and keying in passcode 9056016.

Call to Order (Chairman Ginn)

Minutes of the April 23, 2013 Meeting

Board Actions

Topics