BS7H is the hot DX this week. I worked them on 20 M SSB last night. Sorry, I did not have the video running. I found this video of the 1997 operation. This will give us all an idea what it is like to operate from the rocks. Here is a link to the 1997 operation: www.n4gn.com Link to this year’s operation – www.scarboroughreef.com Good DX
Video Rating: 4 / 5
Intel – Core 2 Duo – T7200 – 2 GHz – DDR2 SDRAM – 1 GB – Serial ATA – 120 GB – 5400 Rpm – 8xSuperMulti DVDRW Dual layer – 12.1 Inch – Bluetooth;IEEE 802.11a;IEEE 802.11b;IEEE 802.11g – Windows Vista Home Premium
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The Si4010 transmitter, the latest member of Silicon Labs’ EZRadio® line of wireless products, is the industry’s first single-chip remote control IC, requiring only one external bypass capacitor, a printed circuit board (PCB), battery and an external casing with push buttons to form a complete remote control. The Si4010 includes a patented antenna tuning circuit that automatically fine-tunes the antenna for optimum transmit power on every button press. With standard remote control designs, variations in the RF transmitter, component and antenna manufacturing tolerances and the environment can lead to large antenna inefficiencies and wasted power.
An additional feedback loop is incorporated into the power amplifier (PA) to maintain constant output power by monitoring the voltage at the output of the PA and adjusting the PA’s current drive to compensate for changes in the antenna impedance. This feedback loop works to maintain constant output power in spite of temperature variations and the “hand effect,” which, as stated above, changes the antenna impedance when a person’s hand is covering the remote control. The net result of antenna tuning is to provide consistently reliable and optimal performance on every button press while reducing the cost and design complexity of the RF matching requirements. Remote controls designed with the Si4010’s automatic antenna tuning feature can reliably and consistently operate at the government transmit limit for maximum transmit range.
Battery life is an important consideration for any portable electronic device, especially a remote control. When we consider typical remote control usage, more than 99 percent of the time, a remote control is waiting for a user to activate a button press. During this time, the Si4010 consumes less than 10 nA at room temperature, making it an ideal choice for battery-powered applications. Additionally, wake-on-touch GPIOs further minimize current consumption of the remote control and extend battery life.
One of the most important considerations in any remote control design is minimizing total system design cost, which is influenced by many factors besides component costs, including labor, inventory, test, and manufacturing yield. By far, the dominant low-cost RF remote control solution on the market today uses an MCU and a surface acoustic wave (SAW)-based RF transmitter.
The wide acceptance of this design topology stems primarily from its low cost and simplicity. A SAW device is resonated with transistor Q1 in a Colpitts oscillator structure to form the carrier frequency, and transistor Q2 provides the output power amplification and isolation needed for stable operation. Data from the MCU is applied directly to the SAW resonator to form the OOK modulated signal, and GPIO6 from the MCU supplies the voltage (VCC) to the SAW-based transmitter. This entire solution uses 24 external components, including the MCU, one bypass capacitor, a quartz crystal used to clock the MCU, and a PCB with a trace antenna and capacitor. It has an RF component cost (excluding the PCB, MCU and bypass capacitor) of .77 USD in 100,000-unit volumes. The .77 RF BOM cost does not include the cost of the MCU, bypass capacitor or PCB. Traditionally, this has been the lowest component cost solution available for reliable RF transmission. From a system cost perspective, the large BOM count increases other costs, such as labor, inventory and tests, and reduces manufacturing yield.
Silicon Labs – Wireless RF and ISM Band Transceiver IC. By leveraging mixed-signal IC design in standard CMOS, we are able to eliminate many discretes and use fewer external components than competing solutions.
Direct RF-sampling ADCs enhance radio architectures
NATIONAL SEMICONDUCTOR ADC12Dxx00RF family of analog-to-digital converters (ADCs) directly sample RF signals beyond 2.7 GHz, with third-order intermodulation distortion (IMD3) up to -71 dBc and sampling at up to 3.6 Giga-samples per second (GSPS). …
Read more on Electronic Technology & Products
9/26 Patents: Utility Patents
A radio frequency switch with improved intermodulation distortion through use of feed forward capacitor. Assigned to Triquint Semiconductor, Inc., Orlando. (8008988) Leslie Kramer, Orlando; and Keith Fosen, Orlando. A remote monitoring of munition …
Read more on Orlando Sentinel
List Price: $ 20.00
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The Radial J48 is a great sounding active direct box that has been optimized to produce maximum headroom while working within the limited current available from standard 48V phantom power. By employing a unique switching power supply, the J48 is capable of peak transients to 9 volts without choking. The result is lower harmonic distortion, half the inter-modulation distortion and significantly improved dynamics over other DIs.
Video Rating: 4 / 5
Dr. Aiden Krone is a former professor of Applied Physics at MIT, notorious for his unrivaled brilliance and obsession with Thermodynamics, Advanced Propulsion, and Quantum Electrodynamics (QED). Despite his increasing tendencies to demand control and secrecy, he became the Founder and Lead Physicist of a classified Time Travel research program. Over a decade later, Krone’s program had successfully developed the world’s first time-traveling suit technology. However, as the program’s equally se
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2001-02 SP Game-Used Authentic Fabric AFSK Saku Koivu (Hockey Cards) (Piece of Authentic NHL Uniform)
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Playstation-branded 3D TV comes 11/13
It is arguably the best value for anyone who's looking to move into the 3D revolution. The 24-inch 3D Display is not an actual TV; it has no built-in TV tuner. But since no one actually watches TV with an antenna anymore, it's kind of a moot point. …
Read more on TG Daily
DX News — ARRL DX Bulletin #43:
Activity is on the HF bands using CW and PSK31. QSL to home call. ANGOLA, D2. Valery, UA0QV is QRV as D2QV from Vila Catoca, Province Lunda Sul-Saurimo until July 8, 2012. Activity is currently on 40 to 10 meters using CW, SSB and RTTY. …
Read more on eHam.net
Listing is by calendar date (day/month/year)
One station will be exclusively dedicated to RTTY, PSK31 and SSTV. Pilot for this DXpedition is Bernd, DF3CB. The equipment consists of 5 transceivers (4 x K2, 1 x IC7000), 4 x kW linears, 2 x 18m Lowband Vertical, a 2 element vertical for 40m, …
Read more on Southgate Amateur Radio Club
Explore the design, construction and applications of the different types of antenna tuners.
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A few nice Backscatter images I found:
Backscatter from Flour
Image by Caro’s Lines
I stood at the backdoor and Jim scattered flour down from the window above.
Backscatter from Dust
Image by Caro’s Lines
I kicked up some dust from a mat…
Backscatter from Water 4
Image by Caro’s Lines
Interference whether caused by natural sources (such as lightning static, atmospheric noise, temperature inversions) or artificial ones (other RF/wireless transmitters, electrical machinery, etc.) has plagued RF/wireless communications since the days of Marconi. But it has taken on a special urgency as more wireless services, especially broadband digital ones, come on line; new digital services, such as WiFi and WiMax, are far less
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Electron backscatter diffraction is a very powerful and relatively new materials characterization technique aimed at the determination of crystallographic texture, grain boundary character distributions, lattice strain, phase identification, and much more. The purpose of this book is to provide the fundamental basis for electron backscatter diffraction in materials science, the current state of both hardware and software, and illustrative examples of the applications of electron backscatter diff
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The following is a straight-forward listing of the stages required to construct a shortwave antenna:
Get hold of a simple broom-handle. Altrnatively you can make use of a dowel rod or ready-made plastic tubing that is available from a plumbers or builders merchants The thickness of the of rod is not paramount and anything from about half an inch or better will function perfectly well Create a relatively large base to hold the rod vertically. The base should be heavy enough to keep the rod vertical at all times Get hold of an aluminium disk with a minimum 6 inch diameter. A disk of approximately 12 inches seems to be the optimum size. The disk will provide a capacity hat termination and will assist in reducing any noise pick up Source a quantity of no.16 PVC plastic covered standard wire. If this is not possible then an good alternative is no.16 or no.18 enamel covered copper wire. If this is not available then standard no.18 speaker wire will suffice With one end of the wire connected to the disk, begin winding a consistent coil around the rod. The coils should sit next to each other and be bound tightly to the rod. On completion of binding the rod you should then terminate the wire either by connecting it directly to your antenna tuner or by a proprietary wire connection terminator. Ensure that the wire extending from the base of the rod is as short as possible On completion you can protect your antenna by coating it in proprietary insulation tape or by giving it several coats of protective spray For optimum performance ensure the antenna is placed close to a window, in a garden or veranda. Ensure that the connection from the base is as short as possible You can use it your antenna without a dedicated tuner, however there will be a lack of enhanced core quality if the antenna is not attached to a receiver via a bespoke dedicated tuner Your new antenna is now geared up for use This simple wire-wound antenna will provide a great basis on which to trial your experience. Providing a ground link to both the antenna and tuner will optimise the system. A simple method of creating an artificial ground is to connect a minimum 5M strand of wire which you allow to fall on the floor of the room or garden
This atricle demonstartes what may be achieved with a straighforward home-made antenna, especially if you are limited in your space and budget
Provider of Two Way Radio Communications
ECE 450 Video Project Professor Cangellaris Narrator: Kates-bear Little Sally: Juno
Video Rating: 4 / 5
Comparing the PWM5 Solar Charge Controller with another comercially available product. The PWM5’s 122Hz switching frequency can be picked up on an AM radio tuned to the bottom of the AM band and placed very close to the solar panel cable. The other controller broadcasts it’s 300Hz switching frequency several metres.
Video Rating: 0 / 5
Video Rating: 2 / 5
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This is the only book that offers a thorough treatment of the following: design and application of programmable digital signal processors; formal specification and optimization of signal processing architectures and circuits; high-level synthesis of DSP
architectures and datapaths; detailed treatment of application-specific integrated circuits (ASICs); scheduling, allocation and assignment algorithms for multiple processor DSP systems; and hardware/software co-design issues in DSP.
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The recent introduction of full body x-ray scanners to several airports around the USA has gotten several folks up in a stink over it. It’s an invasion of privacy! A violation of 4th Amendment rights! Stop checkin’ out my junk! We’re here to tell you why folks be hatin’ and what they’re doing about it, as well as lay out some truth on your faces and give you the skinny behind why this whole ordeal is even going down. Show Notes & Episode Download: bit.ly
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Ceramic Wafer: ceramic powders and sintering processes directly affect the quality of performance. Now the market ceramic used is mainly in 25 × 25,18 × 18,15 × 15,12 × 12. Ceramic chip area is larger, the larger the dielectric constant, the higher the resonant frequency and the better is the receiving. Most of the ceramic wafer design is square, to ensure that the resonance in the XY direction is consistent, in order to achieve signal receiving well-distributed.
Silver Plate: the silver layer of ceramic antenna can affect the resonant frequency. Ideal frequency of GPS ceramic should fall 1575.42MHz on the nose, but the antenna frequency is vulnerable to affect by the surrounding environment, especially built in the machine, Therefore, have to adjust the silver-coated form, to make sure the frequency remained at 1575.42MHz .
The Feed Point: ceramic antenna collects resonance signal through the feed point and then sent to the backend. Since the antenna impedance matching reasons, feed is generally not in the center of the antenna, but doing minor adjustments in the XY direction. This impedance matching method is simple and has no extra cost. Move only in the uniaxial direction is called a single partial antenna, do move in two axes are referred to as double-side.
The amplifier circuit: to bear the shape and size of the PCB ceramic antenna. As GPS has the characteristics of ground bounce, when the background is 7cm × 7cm without a break earth, patch antenna performance can be to the limits. Although restriction by the appearance of the exterior structure and other factors, but try to maintain a considerable size and the same shape. Amplifier gain selection should be with the back-end LNA gain. Before the required signal input of Sirf’s GSC3F, total gain shall not exceed 29dB, otherwise saturated signal will result in self-excited.
www.epathchina.com is a professional B2C E-commerce website serving global buyers. It is owned by EPATHCHINA LIMITED – China Wholesale & Dropship Supplier. ePathChina Online Shop Sell Electronics: GPS Antenna, Wholesale GPS Receiver, GPS Navigation, GPS Tracker, GPS Jammer and More Other Consumer Electronics Products!
Quick demonstration showing how an oscilloscope, an RF signal generator and a simple box with 5 resistors (3 – 50R0 and 2 – 1K0) can be used to observe antenna resonant frequency in the 7 MHz range. Note: This is no substitute for an Agilent VNA, but then, it isn’t going to cost as much either if this GPTE (General Purpose Test Equipment eg scope, signal gen) are just sitting around idle … More info (schematic of resistors in ‘magic box’, calculation of impedance using values read off O-scope): web.archive.org .
Video Rating: 5 / 5
APR — These three letters are going to make or break (mostly) your credit caechnically standing for Annual Percentage Rate (APR) it denotes the amount of interest the credit card companies will be charging you over your credit card drd experience. So, the better you know it the more you stand to gain.
Tebt. Every credit card issuer is obliged to tell the customer about APR. Though just a number, the APR comes in different flavors.
1. The introductory APR:
This APR is the rate at which credit card companies will charge you from the beginning. It could be a low rate on your balance transfers or 0% initially to lure you into buying the credit cards. Most credit cards with 0% introductory
offer come with this rate for a predefined period like for 6 months, 12 months.
Credit card companies also offer low introductory APR like 4.99% etc. on balance transfers for a limited period. After the introductory period is over the APR switches to a high rate. If you wish to dispose off the credit card within the
introductory APR period, technically you can get a low rate or maybe a 0% APR if the credit card offers.
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2. Delayed APR:
This generally sets up after the introductory APR period has expired. Credit card owners who wish to keep the plastic with them for more than a year or even long after the introductory APR expires should seriously consider it. After
attracting a customer with low introductory APR the delayed APR rate earns money for the credit card companies.
3. Penalty APR:
As the name implies the penalty APR is slapped on those who are late in their payments. Miss a payment and the penalty APR is there to greet you. Credit card companies charge a lot lot higher interest rates to defaulters. The more you
default the more you pay. In addition to the penalty APR the late fees along with a decline in credit ratings is also on the cards. So, it is better to avoid ending up in such a scenario and follow your repayment schedule like religion.More than saving money it shines on your credit report.
4. Tiered APR:
Some credit card companies charge different interest rates for different outstanding balance levels. For example, a credit card company might offer 17% on balances between – 00 and 19% on balances over 00. This way they keep interest rates manageable for those with low outstanding balances and charge more from those who have high outstanding balances.
5. Different or Categorized APR:
The credit card companies can decide that they will charge an extremely high APR on cash advance, moderate for balance transfers and maybe a 0% introductory APR on purchases. This compartmentalization of APRs is a perfect example of different APRs.
In addition to the above categories the APRs can be fixed for the entire life of credit card or can vary with time as denoted by 0% introductory APR and delayed APR.
Every credit card has one of these types of APRs, but be prepared to experience all the above flavors of the APRs in one single card if you purchase things, transfer balance, take cash advance, and do not repay on time. The credit card company will disclose you all these numbers when you make a credit card application. Some of them will be written in bold others in the fine print. It is up to you to garner your faculties, read the fine prints carefully and keep a track of these numbers. Along with good financial discipline, this will surely make your credit card experience a good and rewarding one.
Duran Mueller an expert author and credit card consultant,
provides great American express credit card tips.
Read more credit card articles at his
credit card website.
A presentation created by the North Jeffco Amateur Radio League in Westminster, CO. The video should give you a basic idea of the equipment needed for APRS and some of its uses. Check out more of our stuff at www.northjeffcoarl.org
Recently, a lot of people have been purchasing a solar hand crank radio as a vital part of their home emergency kits for any possible natural catastrophes and disasters.Firstly, recognise that these network group brand managers are very clever. Secondly..
Many people take confidence that with a cell phone they are protected and that they will be able to reach whoever they need at the time of an emergency.
Long before Father knew best on television, the “Father Knows Best” old time radio show was airing across the country.
After all, the whole point to getting it in the first place, is to increascapacityfocommunication.People listen to it in their cars and living rooms every day,
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but few of them are familiar with where the radio actually comes from.Using measurement data, review impact of distributed capacitance on working impedances.
This got me to thinking about presentation standards generally in community radio.Today people have become very conscious about being alert and prepared during the onset of disasters.
The emergency radio is fundamentally what its name suggests.It was hosted by Raymond Johnson who was known only as “Raymond”.Most scanners has there usual components connected to it.
There are different times of the day that your 10 meter will be more effective.After much thought, you have made the decision to obtain your Ham Radio license.
Generally speaking, the emissions from most cell carrier installations are insignificant at ground level and won’t be a problem for AM stations.
AM radio broadcast towers are rapidly becoming the new “hot topic” in the wireless communications industry.Folded unipoles are time tested in their ability to both match an AM tower, and make it “cold” at the same time.
Making an inappropriate choice can add thousands of dollars to the overall cost of the collocation project.
These are not always well understood or appreciated by AM operators and engineers.
Well-designed shielding systems provide cost-effective and lasting solutions.
Satellite in EMI chamber
Image by NASA Goddard Photo and Video
Electro Magnetic Interference testing of the NPP Satellite at the Ball Aerospace facility.
Credit: NASA/Ball Aerospace
For more information about NPP: go to www.nasa.gov/npp and npp.gsfc.nasa.gov/
NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.
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<p>Digital Manners: Texting on Takeoff</p>
Farhad: What I was able to find in the research on this is there has been suggested to be a theoretical possibility that the electromagnetic interference caused by your cell phone might affect the instrument panels in the airplane. …
Read more on Slate Magazine
APEM Components range of customised membrane switches
The company specifies the membrane switches for moderate to harsh conditions, including water immersion, electromagnetic interference, ultraviolet exposure and petrol. They meet IP65, IP67, and NEMA4 standards.
Read more on ElectronicsWeekly.com
NASA ISS On-Orbit Status 17 October 2011
[A few weeks ago RPCM A4A_C in the Lab had an RPC (Remote Power Controller) failure. The RPC provides redundant power to ER2 (EXPRESS Rack 2) which powers the Ku-Band Receiver. RPCM A4A_C is one of several RPCMs on a power bus located at the back of …
Read more on Space Ref (press release)
US Patents Awarded to Inventors in California (Oct. 13)
By moving the triggering of the storage of the timestamps by the PHY itself, rather than by a monitoring of the traffic between the PHY and the Media Access Controller (MAC), higher accuracy can typically be achieved." The patent application was filed …
Read more on TMC Net
NASA ISS On-Orbit Status 29 September 2011
With the Lab camcorder configured to view CIR from the Node-1 side, and after verifying the main & auxiliary RPCs (Remote Power Controllers) to be open and touch temperatures within limits, Mike removed/replaced a manifold bottle on one of four …
Read more on Space Ref (press release)
Terminal Node Controller packet modem prescribed by N2RVQ KISS protocol APRS autmatic position/packet reporting system AFSK Audio Frequency Shift Keying MX 614 8 cm x 4.2 cm 30 grams testing with sound generator 17th Dec 2009
Video Rating: 0 / 5
This is a prerlease segments for bastard Sons of Dial-Up – www.BSoDtv.org This is a build of the Tiny TNCx Kit, which hooks to a ham radio (or your FRS Radio) that lets you operate digital modes. A Terminal Mode Controller (TNC) is pretty much an old school modem. It turns binary bits of data from a terminal (a computer or PDA) into sound which can then be transmitted over radio waves.
Video Rating: 5 / 5
This is a video I recorded of me operating my amateur (ham) radio station here at my apartment in Englewood, Colorado near Denver during the North American QSO Party Contest (NAQP) on August 21, 2011 (UTC Date) and contacting stations in the contest and the contest exchange was the station call sign, name of operator and US State or Canadian province. I operated on 20 meter SSB voice and I only made 25 contacts in 11 different states or Canadian provinces. My total score was only 275. I could have had a much higher score if I would had spent more time operating on some of the other HF ham bands as well. I was transmitting at a power level of 90 watts and was using a 20 meter 1/4 wave end fed wire antenna hung above my top 3rd floor apartment balcony and was using a 20 meter 1/4 wave length wire for a counterpoise inside my apartment. I have had this Yaesu FT-950 HF rig now for just over a year and have been quite happy with it! It has all kinds of features built in! This is my first HF transceiver I have had since I sold my older Kenwood TS-520S back 1985. The camera I used was a Sony Cyber-Shot DSC-HX1 used in 1080p HD video mode. This video is best viewed in 1080p HD mode here on Youtube if you have a high speed broadband internet connection. Thanks for watching my video and if you are a licensed amateur radio operator, I hope to contact you on the air sometime. 73, Bill, KI7f My home page is at www.ki7f.com Blogging page is at ki7f2.blogspot.com E-mail is: ki7f@yahoo.com
I was first and foremost influenced to make Comm vids by watching one of YankeePreppers video about his experience, which led me to help fill a void at the time and contribute to the prepper/survivalist community. The vid that led me to my YT hobby is: www.youtube.com (explains the Bruce Lee reference at the end.) Yankee talks about the the rabid dogs frothing at the mouth. Now some of them (Douchebags) are getting all upset over my vids without debating their point. Sure is easy to talk crap and run away. I welcome debate, not threats. The 95% of Hams are good people, and an asset to any community, no disrespect to those folks. But you have in every community the 5% of Douchebags that are just plain bad self absorbing assholes.
Video Rating: 4 / 5
Artur mobil SQ9MLL
Video Rating: 0 / 5
The MFJ-941E is designed to match virtually any transmitter to antenna, including dipoles, inverted vees, verticals, mobile whips, beams, radom wires, and others fed by coax lines, balanced lines or a single wire. An eight-position antenna-selector switch provides versatile antenna selection. The MFJ-941D will handle up to 300 watts of transmitter RF output power. The MFJ-941 employs a cross-needle meter so forward power, reflected power and SWR may be read simultaneously. This tuner is in “MINT” condition. The tuner is very clean both inside and outside it’s cabinet. The cabinet has be taken down to bare metal and repainted with RUST-OLEUM “Hammered” finish. All of the position “dent” switches have been sprayed with DeoxIT D5. This spray is very popular and rejuvenates, lubricates and protects electronics. DeoxIT states more than a Contact Cleaner and chemically improves electronic connections. All of the tuner’s components have been tighten and re soldered (as to need) to restore as of just leaving the factory. The tuner shows no appearance of any burnt conditions from any type of arcing either RF output or lightning. The meter lamp can be powered by a 12 Vdc source. Use a 2.1 coaxial plug with the center conductor of the plug connected to the positive and the sleeve connected to ground. Please note: This cable and plug has been constructed and will come with the tuner. The Meter Lamp ON/OFF switch will activate the meter lamp. The MFJ-941E utilizes a cross-needle meter …
Video Rating: 5 / 5
Astronaut Doug Wheelock, KF5BOC attended Dayton Hamvention as a guest of ARRL and AMSAT. Here are some short remarks he made during a surprise appearance at the Youth Forum, moderated by Carole Perry, WB2MGP. [Video recorded by Bob Inderbitzen, NQ1R of the ARRL staff].
Video Rating: 5 / 5
Check out these Antenna tuner images:
06-20-2006 46
Image by Seli O
Norcal Tuner Upper
Image by AA7JC
This is an SMT kit available from Norcal that allows you to tune up your antenna system before you connect your rig. This is a big plus since you dont waste hardly any battery power (meant for your rig) while in the field. I mounted it in what appears to be a soap container but it is actually something that held some cough drops or something.
SiriusXM Launches 2.0 Service, Tuner
The car docking kit includes magnet-mount antenna and dock that turns a vehicle's electrical wiring into an antenna that re-transmits the satellite programs to a vehicle's FM tuner. Channels are broadcast over the company's XM satellites. …
Read more on Twice
Drew Edwards: Who knew grandpa's rabbit ears could offer high-def happiness
All you need is an antenna — your grandpa's rabbit ears will do — and a digital tuner if you have an older TV. They can be had for between $ 50 and $ 100. No way, I figured. Too good to be true. Reluctant to invest anything resembling real money, …
Read more on Waterloo Record
Elgato HDHomeRun Network Dual Tuner
The HDHomeRun is a tiny box that connects to one's cable or antenna, and then connects to one's router. With the Windows 7 and Mac software, a user can stream digital television, and record TV shows, at the same time in full HD. …
Read more on Coolest Gadgets
Can a phone really put a flight at risk?
Federal studies have yet to prove conclusively that electromagnetic interference can play havoc with aircraft systems. Notably, the Radio Technical Commission for Aeronautics concluded the chance was "very low" and said all evidence of electromagnetic …
Read more on Sun-Sentinel
ON Semiconductor Introduces Industry's Smallest Active Clock Generator ICs for …
… has introduced a new series of active clock generator integrated circuits (ICs) that manage electromagnetic interference (EMI) and Radio Frequency Interference (RFI) at the clock source, delivering system-wide EMI reduction of all clock dependent …
Read more on MarketWatch (press release)
Maker faire 2011 – ARRL Booth
Image by mpechner
A new RFI (Radio Frequency Interference ) source appears on the 80 M ham band in the area due to a Boat Battery Charger. Video: recorded 3-31-2011 Previous experience with a ‘Guest’ brand battery charger (rated FCC Class B – for use in Industrial/non-residential areas) with a next door neighbor helped me identify this source. Address: 705 Roaming Road Update 6-23-2011 – boat and noise has returned: www.youtube.com Related – How to DF noise – Technique using portable SW radio, titled: “Radio Direction Finding (RDF) with portable radio on arcing” www.youtube.com .
Part 2 A good theory demonstrated with regard to Toyota’s Unwanted Acceleration and the need for the FCC to revisit who and what Part 15 rules apply and standards going forward in the new mobile digital video and broadband plans. Lives are clearly at risk as the number of mobile RF transmitters doubles every 2 years and more micro-controllers are in charge of devices that could be life threatening if interfered on.
Yaesu Dualband Amateur Ham Radio FT-8800R.
Full twin Band w/ cross band repeater mode.
Features seperate volume & squelch controls, lighted mike, remote mountable faceplate.
Hasd ctcss/dcs, Alphanumeric display, 1000ch memories, scan modes.
Receives 108-520Mhz & 700-999Mhz (except cellular).
Transmits 2 meter band 144-148Mhz & 70cm band 430-450Mhz.
ARTS system, detachable Faceplate, cross-band repeat & more!.
Requires regulated 12-13.8Vdc at 14 Amps or greater for powe
List Price: $ 620.99
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Microchip Engineers Built Amateur Satellite Deployed From International Space …
ARISSat-1 is the prototype test flight for a proposed series of educational satellites being developed in a partnership with the Radio Amateur Satellite Corp. (AMSAT), the NASA Office of Education ISS National Lab Project, the Amateur Radio on ISS …
Read more on Power Electronics Technology
K6LCS satellite presentation at the Anchorage Hamfest
From the earliest days of the first OSCAR satellites first launched over a half-century ago to the organization of AMSAT and today's comprehensive international efforts to get the latest amateur technologies into outer space, his presentation covered …
Read more on Southgate Amateur Radio Club
Sun City's 'hams' travel the globe with high frequency
By Gwyneth J. Saunders “If that 600-foot antenna in Bluffton goes down in a storm or something, we could be in real trouble when it comes to radio communications in this community," said Bill Gardner, president of the Amateur Radio Club. …
Read more on Savannah Morning News
ISU to host amateur radio presentation
"Amateur Radio is Alive and Well -And Needs You!" will be presented at Indiana State University's Cunningham Memorial Library on Tuesday, Oct. 4 at 7 pm The interactive, hour-long event will provide the basics of amateur radio, also known as ham radio, …
Read more on Indiana State University
Lighthouse in Barcelona: INVISIBLE FIELDS, GEOGRAPHIES OF RADIO WAVES
It's made up of signals that are very familiar, such as television and radio, and signals which are esoteric and enigmatic. It is an ecology that has public spaces – wireless internet and amateur radio – and secret spaces – coded military transmissions …
Read more on Wired (blog)
Check out these Yaesu images:
Yaesu FT-857D
Image by fabiux
After fitting a touch screen panel to my PC it only seemed right to try driving my Icom IC-7400 with it via HRD – think I need bigger buttons or smaller fingers though!! It seems a very intuitive way to drive the radio.
Video Rating: 3 / 5
This piece of software enables you with one click of a button to upload your Ham Radio Deluxe Log straight up to logbook of the world
Video Rating: 5 / 5
7P8EME DXpedition a great success
274 QSO's on 2 metres EME, 23 QSO's on 70 cm EME, 18 QSO's on 23 cm EME and 5 QSO's on 6 metres EME, all using JT65. On HF (CW) a few DX contacts were made in between EME operations by Wynand, ZS6ARF, while some pleasant chats were conducted on 40 …
Read more on Southgate Amateur Radio Club
Check out these ham radio images:
Iraq – YI QSL Bin
Image by Whiskeygonebad
Hereis the bin for Iraq cards, designated YI, is filling up. Lately however ALL ham radio activities have been ordered shut down again for security reasons for this country. Remaining cards can be exchanged for confirmed contacts made during legal operation periods.
HAM RADIO 2011 in Friedrichshafen [QLF-Key]
Image by gynti_46
HAM RADIO 2011 die größte europäische Messe für Funk-Elektronik
www.hamradio-friedrichshafen.de/
HAM RADIO 2011 in Friedrichshafen [HB0TW] (2)
Image by gynti_46
HAM RADIO 2011 die größte europäische Messe für Funk-Elektronik
Check out these ham radio images:
QST July 1974 Ham Convention
Image by Whiskeygonebad
QST July 1974 Ham Radio – Chicago Convention
QST April 1966 Ham Convention
Image by Whiskeygonebad
QST April 1966 Ham Radio – Boston Convention
Ham Radio at World Maker Faire NY
Image by bjepson
Ham Radio at World Maker Faire NY
Check out these AMSAT images:
Åhytten
Image by csete
List Price: $ 19.95
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eme qso
Video Rating: 5 / 5
Intended for all hams that volunteer their skills in public service applications (or who are interested in doing so). Includes details on basic emergency communication skills, message handling, and more. Understand what to expect and what to take along.
List Price: $ 19.95
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Check out these ham radio images:
P1250043
Image by etgeek (Eric)
This Ham radio operator did a nice job with the garage door art, tieing it into the hole radio spark, arc theme. (Unknown call sign) Seen in Santa Clara CA.
Happy Fathers Day
Image by boston7513 Kevin
Richard K Moore
Dad was a telecommunications engineer and his HAM radio was his internet. Back in the 1940s and 50s instant messaging was a more hands on endeavor and the cards on the wall behind him was his contact list. During his career he helped design the system that makes it possible for The North American Aerospace Defense Command "NORAD" to talk to submarines and missile silos, deep under ground and water. This was the global communication network that became the World Wide Web. Most of the things he did, he was not allowed to talk about "Top Secret" but once in a while he’d let stuff slip to his boy, whom he didn’t think would remember or know what he was talking about. For instance he came back from a trip to Washington DC 1979 and told me he had been in a room looking at the top of Mikhail Gorbachev’s head, via a live satellite feed. Another time he was in Italy and wanted to talk to my brother, whom was in the Navy and he picked up his phone and told the operator to contact my brothers ship, she patched him threw to the privet phone of Frederick C. Turner, VADM, USN, The then commander of the sixth fleets in the Mediterranean , they grilled my brother for hours trying to find out how an enlisted man would get a phone call on the Admirals phone. One can only imagine what dad would be doing with his PC if he were around today.
Ham radio swap meet
Image by bkolko
Ham radio: your ticket to the world!
The godfathers of Steve Jobs's genius
As a boy radio ham recovering in Yonkers from St. Vitus's dance (chorea), he built a wooden tower to fix an antenna 125 feet above the ground so he could pick up signals on his headphones. All his life he was intoxicated by height and speed. …
Read more on Reuters (blog)
Council supports chief's ordinances
It was noted that local ham operators share the same antenna service as the local ambulance service. The ham radio operators are used as back up communication in case of a local disaster. Hollowell suggested renting the ham repeater space on Reservoir …
Read more on Helena Daily World
Hiram Council Approves FY2012 Budget
Amateur Radio Emergency Services are often called on in severe weather or other disaster situations, McDaniel said, to play a key role in communications. McDaniel proposed adding a VHF repeater system and antenna to the Hiram water tower facing Highway …
Read more on Patch.com
DroidPSK is an application to decode and encode Ham Radio BPSK31 with the build in microphone/speaker or wired to your radio.
Video Rating: 5 / 5
Yaesu Dual Band Amateur Ham radio transceiver.
Transmits the Two Meter & 70cm bands (144-148Mhz/430-450Mhz), & receives 108-520Mhz & 700-999Mhz (less cellular).
Features 1,000 Alphanumeric memories, WX alert, PL/dpl, ARTS system, scan modes & more.
Compatible with following Optional available Accessories – MH-37A4B, MH-34B4B, E-DC-5B, EDC-6, CT-44, FBA-25A.
List Price: $ 239.99
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Market Reef DXpedition gets under-way
This week, look for operators Salvatore DH7SA, Dietmar DL3DXX, Andreas DL5CW and Robert SP5XVY to be on the WARC bands and in the CQWW RTTY Contest (September 24-25th). This will be followed by operators Pekka OH1TV, Miika OH2BAD, Ilmo OH2BO and Tapani …
Read more on Southgate Amateur Radio Club
Special club news from UKSMG
Above 50.500 is reserve for modes with a bandwidth less than 12 KHz including activity centres for SSTV on 50.510, RTTY on 50.560 and 51.510 is now the FM calling channel. Copies of the new bandplan can be viewed at www.uksmg.org under the UKSMG top …
Read more on Southgate Amateur Radio Club
AR Newsline Report 1781 — Sep. 30 2011:
His activity will focus on the low bands using CW, SSB and RTTY, as time permits. QSL via his home callsign using any call directory dated 2009 or later. DL2NUD, DL8YHR and DL9MS will be active as 8P9HP, 8P9DL and 8P9MS, respectively, from Barbados …
Read more on eHam.net
Demo of the new release of AR-Cluster Server and the processing of the US and Canadian callsign databases.
Niles Community Calendar for Oct. 13, 2011
Dinner features homemade mushroom soup, ham, roast beef, pork or chicken, brats, sauerkraut, potato dumplings and a large variety of salads and homemade desserts. Tickets are $ 75 each. Reservations are requested by Oct. 11. Make checks payable to Maine …
Read more on Niles Herald-Spectator
Ham Radio Station KB2PSM Robert
Image by Whiskeygonebad
Ham Station KB2PSM Robert at the his old station setup – about 6 years ago. Yes: He’s a two-scope ham for sure. Nice to have to adjust one’s psk-31 signal.
2010 ARRL Technical Excellence Award Winners Announced:
His involvement in Amateur Radio has gone through several phases: homebuilt QRP, amateur satellites, early computer-based digital modes (PSK31, MSFK, etc), and occasional contesting. …
Read more on eHam.net
IOTA News from the Deutscher Amateur Radio Club
QSL via DL2VFR (bureau/direct). EU-042, DL, Schleswig-Holstein State North West group: German HAMs announced to become active from Hallig Hooge (Ockenswarft,DLFF-013) signing DK0RZ and DL0DFF in SSB/CW/PSK31 on the HF bands from Oct 5-8.
Read more on Southgate Amateur Radio Club
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George W5JDX interviewed me at Leo Laporte’s studio August 20 2011.
Video Rating: 5 / 5
