1,744
1.7K
Mar 19, 2022
03/22
by
George Bowen, W2XBS
audio
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PODCAST: This Week in Amateur Radio Edition #1203 Release Date: March 19 2022 Here is a summary of the news trending This Week in Amateur Radio. This week's edition is anchored by Terry Saunders, N1KIN, Rich Lawrence, KB2MOB, Don Hulick, K2ATJ, Eric Zittel, KD2RJX, Will Rogers, K5WLR, George, W2XBS, and Jessica Bowen, KC2VWX. Produced and edited by George Bowen, W2XBS. Approximate Running Time: 1:37:52 Podcast Download: https://bit.ly/TWIAR1203 Trending headlines in this week's bulletin...
Topics: ARRL, FCC, shortwave, space, TWIAR, Amateur Radio, Ham Radio, Podcast, Communications, TWiT, Onno...
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1.8K
Mar 12, 2022
03/22
by
George Bowen, W2XBS
audio
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PODCAST: This Week in Amateur Radio Edition #1202 Release Date: March 12 2022 Here is a summary of the news trending This Week in Amateur Radio. This week's edition is anchored by Chris Perrine, KB2FAF, Terry Saunders, N1KIN, Dave Wilson, WA2HOY, Don Hulick, K2ATJ, Fred Fitte, NF2F, Eric Zittel, KD2RJX, Will Rogers, K5WLR, George Bowen, W2XBS, and Jessica Bowen, KC2VWX. Produced and edited by George Bowen, W2XBS. Approximate Running Time: 1:59:13 Podcast Download: https://bit.ly/TWIAR1202...
Topics: ARRL, FCC, shortwave, space, TWIAR, Amateur Radio, Ham Radio, Podcast, Communications, TWiT, Onno...
Nuts 2011-03-18
Topics: nuts, shockwaves, xxx, sexy, simpsons, gel, bbc, thai, dvd, sky sports, cup highlights, xxx xxx,...
73 Magazine February 1994 (#401) VHF Meteor Scatter Propagation - Bounce your signal beyond the horizon ...... WB2WIK/6 10 Using the World's Most Accurate Frequency Standard, Part 2 - Building a digital phase comparator ...... K9EUI 18 Computer Control for Your Direct Digital Synthesis (DDS) VFO - Free yourself of the hassles of generating an accurate and stable sinusoidal signal-and more! ...... VE1ABC 26 ASCII-to-Morse-Code Interface - Let your keyboard do the work ...... KD1JV 36 Standardize...
Topics: radio, amateur, frequency, mhz, antenna, power, meter, ham, amateur radio, radio today, ham radio,...
The scattering of electromagnetic waves is of importance in many communication systems and has been intensively studied in the last quarter of a century. Scattering phenomena can be used to advantage to communicate over the horizon, or they may act adversely as in the case of transmission to a terminal in a jungle or heavily urbanised environment. Examples of the former are the VHF (ionoscatter and meteor-burst) and UHF (troposcatter) links which make use of the scatter from inhomogeneities and...
Topics: DTIC Archive, Ince,A N, ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE...
Para Para Beat Scatter Dance Free Beat Prod By DJ Nosmas Via Instrumentals.com.ng
Topic: Para Para Beat Scatter Dance Free Beat Prod By DJ Nosmas Via Instrumentals.com.ng
Folkscanomy Electronics Articles: The VHF-UHF Primer-An Introduction To Propagation
Topics: propagation, mode, mhz, signals, eme, meters, sporadic, path, miles, antenna, path loss, solar...
2,198
2.2K
Jul 5, 2008
07/08
by
Edward Peacock
texts
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Book digitized by Google and uploaded to the Internet Archive by user tpb.
Topics: tho, glossary, manor, ower, hev, thoo, owd, strange, alus, niwer seed, scotter manor, years ago,...
Source: http://books.google.com/books?id=pXQKAAAAIAAJ&oe=UTF-8
75
75
Mar 24, 2021
03/21
by
Alan Watt ~ Cutting Through the Matrix
audio
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May 14, 2015 "Cutting Through the Matrix" with Alan Watt (Guest on Reality Bytes Radio w/ Neil Foster) realitybytesradio.com
Topics: Patriot Movement Started in U.S. in 1960's by CIA - Background Scatter - NAFTA - Trans-Pacific...
155
155
Oct 19, 2020
10/20
by
Toei Animation
movies
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No description
Topics: Agumon, AtlurKabuterimon, AtlurKabuterimon (Red), Digimon, Digimon Adventure (2020), Eyesmon,...
Folkscanomy Electronics Articles: Microwave Propagation
Topics: microwave, ghz, scatter, density, signals, waves, qso, vhf, radio, microwaves, rain scatter, radio...
1,357
1.4K
Mar 23, 2013
03/13
by
United States. National Bureau of Standards
movies
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Scatter Radar: Space Research From The Ground "Tells the story of Jicamarca Observatory, new National Bureau of Standards facility near Lima, Peru, and its fascinating new research projects. Jicamarca, largest institution of its kind in the world, uses a 22 acre antenna, probes the upper atmosphere to measure electron densities, makes observations of planets, and studies solar coronas and solar gases. Presents in a travelogue-like sequence, the search for a site for the Observatory near...
Topics: HAARP, Scatter Radar, Ionosphere, DXing, Over The Horizon Radar, Cold War
646
646
texts
eye 646
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Liberty v12n03 - 1935 01 - MacFadden
Topics: rawlins, sedgwick, hambro, dillinger, saar, ainlee, margie, communist, federal, communist party,...
1,104
1.1K
Mar 5, 2009
03/09
by
NASA LaRC Office of Education
movies
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NASA Connect Video containing five segments as described below. NASA Connect segment exploring how NASA scientests use measurement, ratios, and graphing to help test aircraft at the Impact Dynamics Research Facility. NASA Connect segment involving students in a web-based activity called Edutour sponsored by Nauticus. The edutour is a digital tour of the NASA Langley Aircraft Landing Dynamics Facility. NASA Connect segment explaining NASA Langley's Aircraft Landing Dynamics Facility, or ALDF....
Topics: NASA Connect, Measurement, Ratios, Graphing, Impact Dynamics Research Facility, Technology, Crash...
Source: http://nasa.ibiblio.org/details.php?videoid=6318&start=60&subject=Aeronautics
73 Magazine March 1988 (#330) Welcome, Newcomers! - Why just VHF antennas ...... KA1HY 4 Winnebiko - A close look at Winnebiko's 2 meter lifeline ...... N4RVE 12 10 meter Beam - With a little money you can gain a lot ...... N0BLX 14 Heath SB-200/220 Mod - More mileage out of a workhorse amp ...... VE5XZ 20 Ten Meter Meteor Scatter - DXing with a difference ...... WB5KYK 22 Mobile Antenna - Two meters on a broadcast band antenna! ...... W4JC 28 Antennas in the Spring - Spring cleaning above the...
Topics: antenna, amateur, radio, mhz, antennas, ham, frequency, amateur radio, feedback card, ham radio,...
Garden and Home April 2015 ZA
Topics: april, garden, floors, water, flooring, design, fabrics, belgotex, outdoor, leger, grey water,...
This publication reports the papers presented to a specialists' meeting held by the Electromagnetic Wave Propagation Panel at its Fall 1993 meeting. The topics covered on the occasion of that symposium on the subject of Multiple Mechanism Propagation Paths (MMPPs): Their Characterization and Influence on System Design included: Propagation and Noise Aspects; Examples of MMPP Systems; System Design to Exploit or Reduce the Effects of MMPPs. (AN)
Topics: DTIC Archive, ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (FRAN CE),...
1,917
1.9K
May 25, 2008
05/08
by
Peacock, Edward, 1831-1915
texts
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Book digitized by Google and uploaded to the Internet Archive by user tpb.
Topics: corringham, manley, bud, thaay, oot, hev, aboot, niver, oher, ohd, niver seed, noht bud, thoo mun,...
Source: http://books.google.com/books?id=c3oKAAAAIAAJ&oe=UTF-8
This document provides a description of the operation of the Terrain Integrated Rough Earth Model (TIREM) and the Spherical Earth Model (SEM), including the engineering formulations on which the models are based. Both models are modular programs with many common subroutines that conform with ANSI Fortran standards. TIREM and SEM can be used as independent propagation models for rough earth (with a known terrain profile) or smooth earth applications, respectively. Both models consider the...
Topics: DTIC Archive, Eppink, David, ELECTROMAGNETIC COMPATIBILITY ANALYSIS CENTER ANNAPOLIS MD, *EARTH...
Data Visualization Toolkit
Topics: code, data, var, click, rails, image, select, view, sql, def, view code, code image, code...
270
270
Feb 20, 2008
02/08
by
Patrick Joseph Coleman
texts
eye 270
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Book digitized by Google from the library of the University of Michigan and uploaded to the Internet Archive by user tpb.
Topics: thy, heart, sweet, hath, golden, doth, thee, thine, martyr, tears, mohawk valley, public domain,...
Source: http://books.google.com/books?id=3L40AAAAMAAJ&oe=UTF-8
These Proceedings include the papers and discussions presented at the AGARD Electromagnetic Wave Propagation Panel Symposium on Propagation Aspects of Frequency Sharing, Interference and System Diversity held in Issy-les- Moulineaux, France, in October 1982. Increasing demands for radio service will necessitate more frequency sharing. An assessment of the possibility of additional frequency sharing included the following points: propagation effects on the practicability of frequency sharing,...
Topics: DTIC Archive, ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (FRANCE),...
In response to HQ USAF direction, a study was conducted to determine an appropriate modification to the AN/TRC-97 to provide a digital trunking capability and to complement the new TRI-TAC AN/TRC-170 tropo terminals. This report is a summary of the study results which were presented to HQ USAF on 18 June 1976. The modification is described and the proposed 'digital AN/TRC-97' is compared to a AN/TRC-170 on technical and life cycle cost bases. A recommended implementation plan and program...
Topics: DTIC Archive, Runnells,E P, Sherwood,A R, Wang,W P, MITRE CORP BEDFORD MASS, *TROPOSPHERIC SCATTER...
Automated Prototype Detector
Topics: device, dpib, data, buffer, return, port, ulong, ine, system, driver, device driver, serial port,...
35
35
Mar 29, 2022
03/22
by
5-Minute Solutions
software
eye 35
favorite 1
comment 0
Garuda Java Gen Pro V2.0.1 Latest Version Free Download. is a small Windows program developed by zeabrixs. is compatible with almost every MediaTek powered device and supports major brands like [Xiaomi VIVO, OPPO, Realme, Asus, Samsung, Meizu, Huawei, Nokia, Infinix].
Topics: MTk, Auth Bypass, Bootloader, FRP, Erase NV, Mi Cloud, Preloader, Firmware, Scatter
The Global Thermospheric Mapping Study (GTMS) is a multi-technique experimental study of the thermosphere designed to map simultaneously its spatial and temporal morphology with a thoroughness and diversity of measurement techniques heretofore unachieved. The GTMS is designed around the Incoherent Scatter Radar Chain in the western hemisphere. The European incoherent scatter radars and the worldwide communities of Fabry-Perot interferometers, meteor wind radars, partial reflection drifts...
Topics: NASA Technical Reports Server (NTRS), ANNUAL VARIATIONS, ATMOSPHERIC COMPOSITION, E REGION, F...
Disclosed herein is a method of determining the near angle scattering of a sample reflective surface comprising the steps of: a) splitting a beam of light having a coherence length of greater than or equal to about 2 meters into a sample beam and a reference beam; b) frequency shifting both the sample beam and the reference beam to produce a fixed beat frequency between the sample beam and the reference beam; c) directing the sample beam through a focusing lens and onto the sample reflective...
Topics: NASA Technical Reports Server (NTRS), MIRRORS, COATINGS, LIGHT SCATTERING, GRAZING INCIDENCE,...
Mastered at Country Masters. Track 1 recorded at The Steam Room. Track 3 recorded at John and Stu's Place, April 1997. Track 5 recorded at Skunkwork. Sleevenotes: "This release is the second part in a tryptich... Chiky(u)u, Scatter, Decay." Packaged in a soft plastic gatefold sleeve with color inserts.
Topics: vvaa, scatter, kevin, drumm, john, hudak, earth, jim, orourke, daniel, united kingdom, menche
5
5.0
Apr 8, 2021
04/21
by
Jacob (Tothe)
data
eye 5
favorite 0
comment 0
Preparing for Halloween? Setting up a diorama? Need more wargame markers? Have some tombstones!
Topics: malifaux, wargaming, Grave, Garden_of_Morr, Frostgrave, Scatter_Terrain, stl, Other, headstone,...
Topics: DTIC Archive, Makarov, G. I., FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH, *WAVE PROPAGATION,...
This abstract covers DCS III requirements, transmission media characteristics, regulatory factors, and DCS III transmission system alternatives. Appendix A documents results of transmission-media investigations. Appendix B presents a detailed review of rules, procedures, regulations, standards, and recommendations established by national/international organizations. Appendix C provides a description of topographic and climatic conditions in Germany, Turkey, and Hawaii.
Topics: DTIC Archive, Chu,T M, TRW DEFENSE AND SPACE SYSTEMS GROUP REDONDO BEACH CA, *SATELLITE...
Contents: Transmission Media--Coaxial cable characteristic, and Intrinsic limitation of coaxial systems; Millimeter Waveguide; Terrestrial Microwave Line-of-Sight (LOS) Transmission; Troposheric Scatter Communications; MM-Wave Technology; EHF Satellite Communications; Packet Radio; Optical Fiber Communication; Submarine Cables; Meteor-burst Communication System; Radio Frequency Spectrum; Alternatives to Electromagnetic Communication Links; Manned and Unmanned Aircraft; Tetheed Balloon...
Topics: DTIC Archive, Chu,T M, TRW DEFENSE AND SPACE SYSTEMS GROUP REDONDO BEACH CA, *RADIO LINKS,...
This report covers the second triannual effort of a Research and Development program to design, construct, and test an advanced, high efficiency traveling-wave tube designed to amplify multiple signals while minimizing any mixing products which result from non-linear operation. The tube will be operated in the linear region below saturation; tube efficiency will be enhanced by means of a four stage depressed collector. During the report period the scaled electron gun was constructed and...
Topics: DTIC Archive, Rousseau,A L, HUGHES AIRCRAFT CO TORRANCE CALIF ELECTRON DYNAMICS DIV, *TRAVELING...
This Handbook contains a set of validated models for the computation of the basic transmission loss between a transmitter and a remotely sited receiver. Emphasis is on terrestrial, air-ground, air-air, and earth-satellite circuits in the 10 kHz-30 GHz band. The effects of the imperfectly conducting, irregularly-shaped earth's surface, the troposphere, and the ionosphere are accounted for, as are meteorological variations and ray path obstruction by vegetation and urban structures. Only one...
Topics: DTIC Archive, Weissberger, M., ELECTROMAGNETIC COMPATIBILITY ANALYSIS CENTER ANNAPOLIS MD,...
Word-intelligibility (psycho-acoustic), Articulation Index (electrical) and voice recognition tests were made on the Thule, Greenland, to Cape Dyer, Baffin Island, link of the DEWDROP tropos pheric-scatter communication system, and on the Gander, Newfoundland, to Harmon Air Force Base, Newfoundland, link of the POLEVAULT tropospheric scatter communication system, and compared against similar tests taken on a laboratory reference system. Harvard phonetically-balanced (PB) word-lists were used in...
Topics: DTIC Archive, Stuntz, Stephen E, ELECTRONIC SYSTEMS DIV L G HANSCOM FIELD MA OPERATIONAL...
This report describes the design, operation, and testing of the AN / TAC-1 demultiplexer subassembly. It demultiplexes the 6144 kb/s digital data stream received over fiber optic cable or tropo satellite support radio, and converts it into 2 digital groups and 16 digital channels. Timing recovery is accomplished by generating a 18432 kHz master clock synchronized to the incoming data. This master clock is divided modulo two to generate the proper group and loop timing. Demultiplexer, Fiber...
Topics: DTIC Archive, Krueger, Paul J, MITRE CORP BEDFORD MA, *DIGITAL SYSTEMS, *COMMUNICATION AND RADIO...
This is the final report on a program to design, construct, and test a high power, G-Band TWT capable of amplifying multiple signals while minimizing any mixing products which results from non-linear operation. The approach is to operate the tube backed off from saturation to fulfill the distortion specification and incorporate a four-stage depressed collector to enhance the efficiency. One experimental model of the 673H was produced. Details of the designs of the electron gun, coupled-cavity...
Topics: DTIC Archive, Rousseau,A L, HUGHES AIRCRAFT CO TORRANCE CA ELECTRON DYNAMICS DIV, *TRAVELING WAVE...
R&D Report 1977-10 : UHF scatter propagation across the English Channel. G.H. Millard The incidence of scatter propagation in a trans-horizon path across the English Channel has been studied in order to assess the effect it has on the performance of a uhf television re-broadcast link to the Channel Islands. For small angles of scatter the degree of scattering observed was consistent with simple theory. The effect will result in a relatively minor degradation of link performance.
Topics: aerial, signal, scattering, interference, surface, kippure, aerials, directivity, scattered,...
From the bitsavers.org collection, a scanned-in computer-related document. sds :: 9xx :: periph :: 900554A tapeRecFundamentals
Topics: tape, magnetic, flux, figure, ibm, pulse, binary, gap, parity, training department, magnetic tape,...
Auroral nighttime infrared emission observed by the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument onboard the Thermosphere-Ionosphere-Mesosphere Energetics and Dynamics (TIMED) satellite is used to develop an empirical model of geomagnetic storm enhancements to E-region peak electron densities. The empirical model is called STORM-E and will be incorporated into the 2012 release of the International Reference Ionosphere (IRI). The proxy for characterizing the...
Topics: NASA Technical Reports Server (NTRS), INCOHERENT SCATTER RADAR, INFRARED RADIATION, RADAR...
3,355
3.4K
Jun 12, 2008
06/08
by
Shuer and Johnston
image
eye 3,355
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comment 0
This screencast was created in a graduate education class at American University in the summer of 2008.
Topic: excel screencast graphing line of best fit scatter plot
Outlines test procedures and methods for use in evaluating the performance of tropo-scatter communications systems. Includes checklist and data collection sheets.
Topics: DTIC Archive, ARMY TEST AND EVALUATION COMMAND ABERDEEN PROVING GROUND MD, *TEST METHODS,...
This paper reviews the troposcatter communication advances for the past thirty years or so, summarizes China's achievements in this field, and discusses the possible trends for future developments. From the late 1940's, there was a great increase in the interest in beyond the horizon troposcatter communications, and large amounts of experimental and theoretical studies have been made. In the early fifties, the knowledge of the characteristics and regularities in beyond the horizon troposcatter...
Topics: DTIC Archive, Luo,Z, FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH, *TROPOSPHERIC SCATTER...
This report examines the performance of phased array antennas with adaptive combining for troposcatter communications. Diversity is commonly employed to combat fading on troposcatter links. Diversity may be derived from a phased array by adaptive combining of the element outputs (space diversity) or equivalently by forming a set of beams via a Butler matrix transformation (angle diversity). A number of new results describing the performance of both azimuth and elevation angle diversity systems...
Topics: DTIC Archive, Wallace, Mark S., SIGNATRON INC LEXINGTON MA, *TROPOSPHERIC SCATTER COMMUNICATIONS,...
Folkscanomy Electronics Articles: Aircraft Enhancement
Topics: enhancement, aircraft, radar, equation, bistatic, meters, projected, scatter, lobe, table,...
Research is reported concerning the ionospheric F-region irregularities. The results are based on in-situ OGO-6 measurements of the total ion concentration N sub i. A proposed mechanism for the generation of equatorial F-region irregularities and the morphological results, and the occurrence of Fe(+) ions in the equatorial F-region are discussed. Related research papers are included.
Topics: NASA Technical Reports Server (NTRS), F REGION, ION CONCENTRATION, OGO-6, ELECTRIC FIELDS,...
In the book, written using the open Soviet and foreign materials, are examined the fundamental principles of construction and special feature/ peculiarity of broadband communicating systems, are given examples of the realization of such systems, are shown the prospects for their further development and use in radio communication. The book is intended to the cadets of the military schools, students of the military academies and officers of the troops of communication/connection. It can be also...
Topics: DTIC Archive, Semenov, A M, FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH, *RADIO ANTIJAMMING,...
This document describes the Manpower and Personnel Integration (MANPRINT) Evaluation of the AN/TRC-170 Digital Troposcatter Radio System. The MANPRINT evaluation was conducted in support of the AN/TRC-170 Follow-On Operational Test and Evaluation (FOT&E) by the U.S. Army Research Institute for the Behavioral and Social Sciences (ARI). The FOT&E was conducted by the U.S. Army Operational Test and Evaluation Agency (OTEA) at Fort Huachuca, AZ, from September 1986 through January 1987. The...
Topics: DTIC Archive, Krohn, Gregory S, ESSEX CORP WESTLAKE VILLAGE CA, *HUMAN FACTORS ENGINEERING,...
Outlines test procedures and methods for use in evaluating the performance of tropo-scatter communications systems. Includes checklist and data collection sheets.
Topics: DTIC Archive, ARMY TEST AND EVALUATION COMMAND ABERDEEN PROVING GROUND MD, *TEST METHODS,...
The objective of this program was to improve the performance of an earlier experimental model by replacing existing circuit card assemblies with new circuits that would enhance the performance of the DAR-IV technique. Therefore, emphasis of the DTS program was to implement improvements in the basic design which included increased memory of the demodulator coherent filter, modification of the clock recovery loop for increased stability, improvement in bit count integrity and modification of the...
Topics: DTIC Archive, Unkauf,Manfred, RAYTHEON CO SUDBURY MASS EQUIPMENT DEVELOPMENT LABS, *DIGITAL...
