Pure launches second-generation in-car digital radio adapter
The original Highway relied on a simple wire antenna that was designed to be attached to the inside surface of the windscreen but the 300Di has a robust external aerial, which should greatly enhance reception. The 300Di is permanently installed in the …
Read more on The Independent
Archive for month: December, 2011
Warning: High Frequency
She ends up talking to an EPA scientist named Carl Blackman, an expert on the biological effects of radiation from electromagnetic fields (EMFs) – the kind of radiofrequency EMFs (RF-EMFs) by which all wireless technology operates, including not just …
Read more on Earth Island Journal
Coating company PF reports sustained growth
It can perform shielding to prevent electromagnetic or radio–frequency interference, graphics decoration, vacuum metalizing, decorative coatings, scratch-resistant ultraviolet-light coatings, silk screen printing and pad printing. …
Read more on Plastics News
WALKER AUDIO RELEASES ALL-NEW ELIMINATOR DIRECTIONAL ANTENNAE
The new antennae improves systems by cleaning up electromagnetic and radio frequency interference (EMI/RFI) and stray electrical noise in the room and channeling them to the system ground at the negative speaker terminal in the user's amplifier. …
Read more on Home Toys (press release)
LRP AI Runner Reverse Version 2 ESC
The Fail Safe System continuously monitors the radio signals being sent to your RC car. If incomplete or “false” signals are received as a result of low batteries or radio frequency interference, your LRP AI Runner Reverse Version 2 speed control …
Read more on Radio control Car Action (blog)
Seventeen Evergreen Tells the Story Behind That Dazzling Video for "Polarity Song"
Ahead of the band's show tonight at Cafe Du Nord, and its new album (which is due in February,) we spoke with Seventeen Evergreen's Caleb Pate about making the dazzling video for "Polarity Song," which involved taking over a giant thrift store in West …
Read more on SF Weekly (blog)
Video Rating: 3 / 5
iHome iP4 Review
The iP1 was such a promising looking product with some great looking features and impressive specifications: It had four-channel bi-amplification for its 1-inch tweeters and 4-inch drivers, plus Bongiovi digital signal processing. …
Read more on Digitaltrends.com
Texas Instruments (TXN) Breaks Through Resistance at .36
Texas Instruments Incorporated is a global semiconductor company that designs and supplies analog technologies, digital signal processing (DSP) and microcontroller (MCU) semiconductors. The Company also operates materials and controls, and educational …
Read more on Financial News Network Online
Shares of DSP Group Receive a Boost, Up 3.0%
DSP Group (NASDAQ:DSPG), a company whose shares are moving quickly, is trading 3.0% higher to $ 6.02. The S&P is trading higher by 1.0% to 1257 and the Dow is trading 0.8% higher to 12113. DSP Group, Inc. is a semiconductor fabless company that develops …
Read more on Financial News Network Online
米国、アマチュア無線愛好者数が過去最多を記録―免許保有者は70万人に
米 アマチュア無線連盟（American Radio Relay League：ARRL）が2011年10月12日に公表したところによれば、2011年第3四半期に米国のアマチュア無線免許保有者数が70万人を超え、過去最高を記録したことがわかった。 ARRL によれば、アマチュア無線免許保有者は2000年以降 …
Read more on インターネットコム
Amatörradio populärare än någonsin
Maria Somma på USAs amatörradioförbund ARRL anade detta, men föreningen saknade exakt statistik om antalet utövare. Så hon började räkna. – När jag var klar upptäckte jag att det idag finns fler radioamatörer än någonsin. För första gången är vi fler …
Read more on Ny Teknik
滤波器设计软件选择指南
Raltron公司在其网站上提供了一款简单的在线带通滤波器设计工具，该工具可以在给定对象阻抗水平、频率和要求的加载品质因子(Q)条件下计算出带通滤波器的理想元件值(C1、C2、C3、L1、L2和L3)。 Tonne Software公司的学生 …
Read more on 电子系统设计网
Some cool Amateur Radio images:
2008 Lake County Amateur Radio Club Hamfest
Image by k9mq
Cliff, WA8ZAZ
KEMET Offers HiQ-CBR Series Surface Mount Multilayer Ceramic Capacitors for …
Typical applications include critical timing, tuning, bypass, coupling, feedback, filtering, impedance matching, and DC blocking. Field applications include wireless and cellular base stations, wireless LAN, subscriber-based wireless services, …
Read more on PR Newswire (press release)
Murata – SAW filter / power amplifier / magnetic stabilizer module for mobiles
It controls the characteristics of load fluctuation caused by changes in impedance that can occur when the user's hand, metal object or other materials come close to the antenna. With the growing numbers of frequency bands supporting 3G networks, …
Read more on Electropages (press release)
This is the final project presentation video for our digital signal processor, which we created as a final project for our Embedded Systems course at the University of Iowa College of Engineering. As stated in the video, our circuit is built around an ATMega88PA. We use an external ADC and DAC to handle the audio signal. The guitar used to demo the effects is a heavily-modded “Fullerton” brand guitar with a Dimarzio Super Distortion from the late 1980s in the bridge position wired with a coil tap and volume control only. The “half-stack” amplifier shown in the guitar demos is a Crate “Flexwave” SS amp set to its “clean” channel with a flat EQ and no effects. Theoretically, this means it did not color the sound significantly. It was used merely to amplify the signal coming out of our circuit’s power amp. Images used in the video are credited within. If you own either of the images we used (“Roadrunner and Coyote” or the “Pedal Board”), and you do not wish for them to be used in this video, please let us know and we will remove them immediately. Thank you, and enjoy the video.
Video Rating: 5 / 5
ADI’s video signal processor with integrated motion adaptive de-interlacing, dual scalers, bitmap OSD with dual HDMI 1.4 transmitters with HD encoder and SD encoder output functions.
Video Rating: 5 / 5
Check out these Psk31 images:
Cristina y Carlos
Image by José Antonio Carretero
23 de mayo 2009.
Activación de la estación EH1OLA en San Esteban de las Cruces. Oviedo. Asturias
Cristina y Carlos.
Ya le daré a EB1EOZ el DVD con las fotos.
Some cool Ham Antenna images:
Image by CaptBrando
From the front of the house. The tree fell away and east, suggesting if there were tornadic activity that the inflow was to our east. We measured a 50mph gust at the house. 1 mile to the east measured over 70mph. And my ham antenna made it!
Amateur Radio Astronomer’s Handbook
List Price: $ 19.95
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Find More Amateur Radio Products
Affichage du FT-857D lors de l’accord automatique de l’antenne ATAS-120. Display when ATAS-120 anntenna is tuning for best SWR
more on: video.qrz.pl
Video Rendered and Posted with permission Given by Bill Pasternak WA6ITF youtube.com/va2oz operated by Belair Technologies This Weeks News and Information… AMATEUR RADIO NEWSLINE(tm) REPORT 1790 Released December 2, 2011 IS AVAILABLE RIGHT NOW This Weeks Newscast Anchored By Jim Damron, N8TMW IN THIS WEEKS EDITION FCC SECOND BPL R&O RULES TAKE EFFECT DECEMBER 21 AO-51 GOES QRT ARISSAT-1 APPROACHING LAST DAYS ON-ORBIT NEW ZEALAND HAMS GRANTED POWER INCREASE TO A FULL GALLON ARRL TO RELEASE NEW VIDEO AIMED AT MAKER COMMUNITY ON DECEMBER 27 DAYTON HAMVENTION SOLICITING NOMINATIONS FOR 2012 AWARDS And Much More…
A look back through the years at amateur radio and Christmas…..
Video Rating: 0 / 5
Worked a few stations during the 2007 ARRL Phone contest in March…
Video Rating: 4 / 5
National Weather Service to pay tribute to storm spotters
Many of these volunteers are amateur radio operators, or "hams." Anyone can listen "to the world" with only a modest radio, but some hams invest hundreds or even thousands of dollars in radio and electronic equipment and spend years honing their …
Read more on Billings Gazette
Police Departments Look to Tune Out Scanner Hobbyists
19, 2011: Scanner hobbyist Rick Hansen holds his scanner/Ham radio device at his home in Silver Spring, Md. WASHINGTON – Police departments around the country are moving to shield their radio communications from the public as cheap, user-friendly …
Read more on Fox News
Some cool APRS images:
AS790-looking-west
Image by etgeek (Eric)
Hardware: Davis Vantage Pro 2 / Fan Aspirated Solar Shield.
100% Solar powered.
Software: Weatherlink APRS Interface
APRS
Image by 3D King
Antenna connector close up – remotable APRS transmitter
sandiego
Image by Abraxas3d
Click this link for an application of this map with Amateur Radio APRS "breadcrumbs" data.
Tri-Band Yaesu VX-6R Submersible Amateur Ham Radio Transceiver (144/222/440)
- Compact, Mil-Spec, Waterproof & Submersible Tri Band Ham Radio!
- Transmits the 144, 222 & 440Mhz Amateur Ham Radio Bands, & receives 0.5-999Mhz!
- Output Power is 5 Watts on 2 meter & 70cm, & 1.5W on 222Mhz, with multiple lower power settings!
- 900 AlphaNumeric Channels, ctcss/dcs, Backlit keypad, includes HiCap 1500mA Batt & charger.
Yaesu VX-6R Triband Amateur Radio Transceiver.
144/222/440 xmit (2 meter, 1.25 meter & 70cm), plus 0.5-999Mhz receive range too (AM/FMN/FMW, less cellular).
Built-in PL & DPL, Alphanumeric.
Can receive AM/FM broadcast radio, Shortwave, CB, Police, Weather, Aircraft & marine bands.
Includes Antenna, HiCap 1500Ma Batt & charger.
Waterproof & submersible (rated 3ft for 30 mins).
Has a security password feature, built-in morse code trainer, black magnesium case.
Pkg also
List Price: $ 374.99
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A few nice Amateur Radio images I found:
ALBERTA 1967 amateur radio plate
Image by woody1778a
1967 Amatuer Radio plate with Canada Centennial logo and stylized maple leaf.
ALBERTA 1966 amateur radio plate
Image by woody1778a
ALBERTA 1971 amateur radio plate
Image by woody1778a
NBN Co keen to resolve tower worries
Residents in both towns are worried that electromagnetic radiation from the towers could affect their health and cause electronic interference. Tony Gibbs from the NBN Co says it has scientific reports that show the towers are not dangerous. …
Read more on ABC Local
Military transition to optical interconnects proceeding at slow-but-sure pace
While electrical signals are vulnerable to electromagnetic interference (EMI), optical interconnects are not. Optical interconnects do not require shielding, which allows for smaller, lighter devices. Electromagnetic fields, which copper connections …
Read more on Military & Aerospace Electronics
InTop: Sorting out Ships' Topside Mess
Its performance goals are to improve ships' anti-radar profiles, increase communications bandwidth, and resolve electromagnetic interference and compatibility issues… Northrop Grumman, as prime contractor, will perform most of the work at its …
Read more on Defense Industry Daily
DX-CLUSTER IZØAWG-6. THANKS TO IWØCBV & IZ0HPX
A few nice AMSAT images I found:
P1010770
Image by daveclausen
Closeup of the AMSAT yagis
Joshua
Image by csete
Father of Picorover, Joshua Tristancho, at the AMSAT OZ headquarters
Escuchando el satélite LO-19 (LUSAT)
Image by lu6fpj
Probando la antena CJU que fabriqué con el tubo de una soda descartable. El satélite argentino LO-19, conocido como LUSAT-1, fue puesto en órbita por la Agencia Espacial Europea con un cohete ARIANE, el 22 de enero de 1990.
Es un pequeño cubo de aluminio de solo 23 cm de lado y 7kg de peso equipado para radiocomunicaciones, La vida útil del LUSAT-1 se calculó en 6 años sin embargo, aún se puede oír la baliza (Beacon) en 437.125Mhz.
Operator’s, organizational, direct support, general support, and depot maintenance manual : standing-wave-ratio power meter ME-165/G (TM 11-6625-333-15)
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ARRL’s HF Digital Handbook
ARRL s HF Digital Handbook is your guide to understanding the most active HF digital communication modes in use today. There is something here for every radio operator beginners and more advanced operators alike. And, as this technology rapidly advances, your increased understanding of digital communication techniques will make certain that you stay in the race as new modes and methods unfold.
This fourth edition book includes expanded station setup information, discussion of PSKMail and
List Price: $ 19.95
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Homebrew antenna tuner project for HF. The roller controlled by the switches in the black box with limit switch.73′ de ik6bgj,Justin
Video Rating: 2 / 5
Video Rating: 0 / 5
Check out these Amateur Radio images:
Kennehoochee Amateur Radio Hamfest Finds
Image by The Rocketeer
The Dollar Box
Kennehoochee Amateur Radio Hamfest Finds
Image by The Rocketeer
The artificial horizon display might be good for someone in an earthquake zone…
My ATAS-120A was acting quirky and locking up so I disassembled it for inspection. BE VERY CAUTIOUS if you attempt to do the same. The ATAS antenna needs a very good RF ground to function properly. Most problems that people encounter with them are ground related. Another issue is that the center pin of the PL-259 style base connector it uses is slightly smaller than other center pins resulting in a loose electrical contact with the antenna mount. One way to correct this is to bend the prongs of the mating connector inward slightly so that a good contact is maintained. Thank you KB5WIA for posting a very good guide on this antenna!
Video Rating: 5 / 5
LMR-400 Ultra Low Loss 50-Foot Antenna Cable for most Routers, WiFi cards and USB Wireless adapters, N Male & RP-SMA Male (Plug – No Pin) connectors. Connects an external antenna to WiFi , Router, Radio or Antenna
- Cable Length: 15.2 meters (50 feet) PLEASE see all pictures of connectors
- Connector Type: N Type (male) to RP-SMA WiFi / Wireless Routers, USB cards, PCI cards, up to 6 GHz
- Ultra low loss characteristics ensure the maximum performance of your external antenna installation
- LMR-400 cable is designed for Indoor or Outdoor applications and the outer jacket resists ultraviolet light and oxidation
- Antenna cable – Connects Access Points, Routers and Radio transmitters to Antenna
Ultra Low Loss Cable is designed to transmit the maximum signal to your antennas. Times Microwave LMR-400 cable meets Military Specifications with shielding foil and coated copper conductors for less signal loss in runs up to 200 feet.. In this high quality cable, the dimensions and spacing of the conductors are uniform. Any abrupt change in the spacing of the two conductors along the cable tends to reflect radio frequency power back toward the source, causing a condition called standing waves,
List Price: $ 79.99
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www.ece.utah.edu/~ece3300 How to find voltage standing wave ratio with the smith chart.
Check out these ARRL images:
Split Rock ARA Field Day 2007
Image by bigtowers20
Split Rock Amateur Radio Association ARRL Field Day 2007
Horseshoe Lake, Roxbury Township, NJ
Split Rock ARA Field Day 2007
Image by bigtowers20
Split Rock Amateur Radio Association ARRL Field Day 2007
Horseshoe Lake, Roxbury Township, NJ