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German radio hams to launch school balloon - Southgate Amateur Radio Club

German radio hams to launch school balloon Southgate Amateur Radio Club The Deutscher Amateur Radio Club (DARC) reports there have now been ten years of successful cooperation with amateur radio and electronics at the Eichenlaub school in...
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Many schools are launching high-altitude balloons in preparation for possible CubeSat experiments.  The Deutscher Amateur Radio Club says the latest program will be a balloon launch on Tuesday, 06 May 2014, 11:00 hrs CEST, from the Eichenlaub school in Weiskirchen.  Telemetry and voice messages will be sent on 145.200 MHz, while position reports will be transmitted on 144.800 MHz in APRS.  Aloha de Russ, KH6JRM).

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Registration Remains Open for Global Amateur Radio Emergency ... - ARRL

Registration Remains Open for Global Amateur Radio Emergency ... - ARRL | KH6JRM's Amateur Radio Blog | Scoop.it
Registration Remains Open for Global Amateur Radio Emergency ...
ARRL
Online registration ends July 31 open for the 2014 Global Amateur Radio Emergency Communications (GAREC) Conference.
Russ Roberts's insight:

Online registration for the 14-15 August 2014 Global Amateur Radio Emergency Conference (GAREC) will close on 31 July 2014.  The conference will be held in Huntsville, Alabama in conjunction with the 16-17 August 2014 Huntsville Hamfest.  Aloha de Russ (KH6JRM).

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Same callsigns? | AmateurRadio.com

Same callsigns? | AmateurRadio.com | KH6JRM's Amateur Radio Blog | Scoop.it
One of the drawbacks of WSPR (currently) is you tend to get spotted, or spot, the same stations over and over again. I am even seeing the same stations being (RT @RigolHam: * Same callsigns?
Russ Roberts's insight:

According to Roger Lapthorn (G3XBM), one of the drawbacks of the WSPR mode is the small number of hams using the mode.  As a result of this limited community, "you tend to get spotted, or spot the same stations over and over again." Roger says that's mystifying because the mode is easy to use, works great under adverse conditions, and is perfect for QRP operations.  So, my fellow amateurs, get busy and giver Roger a few calls.  Aloha de Russ (KH6JRM).

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From Ham Radio to Blogging, from the Titanic to Gaza...Sorting Out the Facts

From Ham Radio to Blogging, from the Titanic to Gaza...Sorting Out the Facts | KH6JRM's Amateur Radio Blog | Scoop.it
Have you ever heard of Artie Moore?He was an amateur ham radio operator — pre-wireless wireless — whose first news scoop came in 1911 when he beat out all the professionals by intercepting a (From Ham Radio to Blogging, from the Titanic to Gaza...Sorting...
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The strange, fascinating way communications technology has changed our perceptions of our world--from the reporting of the Titanic sinking in 1912 by pre-wireless pioneer reporter Artie Moore to the modern day disaster of a Malaysian airliner over Ukraine described  by the French photojournalist Jerome Sessini, who happened to be in the area at the time of the plane's loss.  His photos posted on the internet proved that the aircraft shot down was civilian and that the loss of the aircraft was no accident.  An interesting and somewhat frightening cautionary tale.  Aloha de Russ (KH6JRM).

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Mildura medium wave cw beacon will be off air for several months.

Required maintanence and antenna upgrade will keep popular beacon silent.

Russ Roberts's insight:

Source:  Southgate Amateur Radio Club.

 

The VK3FI 473 kHz cw beacon at Mildura in Western Victoria state will be off the air temporarily for maintenance and antenna upgrades.  According to VK3FI, the installation will include a new mast, new feeders, and the rack-mounting of equipment.  Once the improvements are made, the cw beacon should be a bit easier to copy.  Aloha de Russ (KH6JRM).

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Liechtenstein operation set for mid-September 2014.

Activity will run from 13 to 20 September 2014.

Russ Roberts's insight:

Source:  Southgate Amateur Radio Club.

 

Kasimir (DL2SBY) will be on-air from Liechtenstein from 13 September to 20 September 2014.. Activity will be from 80-10 meters, including 30/17/12 meters using CW, SSB, and RTTY.  He will upload the log into ClubLog.  QSL via the Bureau or direct to DL2SBY.  Aloha de Russ (KH6JRM).

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FEMA Administrator Calls Ham Radio “Resilient” - ARRL

FEMA Administrator Calls Ham Radio “Resilient” - ARRL | KH6JRM's Amateur Radio Blog | Scoop.it
TAGS: amateur radio, amateur radio community, amateur radio operators, ARRL National Centennial, ARRL President Kay, Centennial Convention banquet, Connecticut Convention Center, disaster communication, disaster ...
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The working relationship between the American Radio Relay League (ARRL) and the Federal Emergency Management Agency (FEMA) was put on solid ground when FEMA Director Craig Fugate (KK4INZ) and ARRL President Kay Craigie (N3KN) signed a formal Memorandum of Agreement (MOA) on 18 July 2014 at the ARRL Centennial Convention in Hartford, Connecticut.  In signing the document, Fugate said, "Radio is one of the most resilient communications technologies we have...Amateur Radio can serve as a vital service in support of emergency responders and survivors during a disaster."  Aloha de Russ (KH6JRM).

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Amateur Radio Contests Encourage Emergency Preparedness

Amateur Radio Contests Encourage Emergency Preparedness | KH6JRM's Amateur Radio Blog | Scoop.it
100 years ago, amateur radio operators were in the early years of making wireless communication with people around the world.
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A nice written and audio package assembled by Iowa Public Radio reporter John  Pemble. Pemble visited the Story County Radio Club during the 2014 ARRL Field Day and came away with a new understanding of what "contesting" means.  Love 'em or hate 'em, contests prepare you to handle loads of traffic in a short period of time.  For me, Field Day provides all the contest excitement I need.  Somehow, I survive the 24-hour "send-a-thon".  I have a firm respect for contesters who can endure the stress and excitement without giving up.  Aloha de Russ (KH6JRM).

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Christofer Toumazou's 'lab on a chip' makes preventing illness possible

Christofer Toumazou's 'lab on a chip' makes preventing illness possible | KH6JRM's Amateur Radio Blog | Scoop.it

The Chairman and CEO of DNA Electronics, a provider of point-of-care genomic diagnostics solutions for medical and healthcare applications, Chris Toumazou, has been awarded the European Inventor Award 2014 in the Research category, for his rapid USB-based  DNA testing device.


Announced at the European Inventor Awards ceremony in Berlin on June 17th 2014, Toumazou’s win recognises his contribution to medical research with his ground-breaking invention. The device, which can show the results of a DNA test within minutes, uses silicon transistors to identify DNA and RNA, offering a simpler, cheaper and more discrete alternative to existing DNA analysis equipment.

 

The invention involves the amplification and detection of DNA and other biomolecules using pH measurement, providing the ground work for DNA Electronics’ molecular diagnostics platform Genalysis®. With the capability of identifying genomic sequences, not only in patients, but also in infectious agents, the company is developing products   that will provide clinicians with rapid actionable diagnosis of life-threatening conditions.

 

DNA Electronics is a developer of semiconductor solutions for real-time nucleic acid detection which enables faster, simpler and more cost-effective DNA analysis platforms.


A spin-out of Imperial College London, DNA Electronics was founded by Professor Toumazou following his invention of the company’s core technology that allows CMOS transistors to be switched on and off with DNA – the key invention enabling semiconductor-based sequencing.   Prof. Toumazou’s innovation has culminated in the world’s first DNA logic on standard CMOS technology.

 

The company’s IP portfolio includes techniques for monitoring nucleotide insertions using ion-sensitive transistors, enabling label-free electronic DNA sequencing and diagnostics platforms. DNA Electronics (DNAe) has developed the ground-breaking Genalysis® platform of disposable silicon chip-based solutions for real-time nucleic acid sequence detection at the point of care, providing end users with technology as yet unavailable outside a laboratory.

 

DNA Electronics has a non-exclusive, field-limited licensing agreement with Ion Torrent (now part of Thermo Fisher Scientific), whose next generation sequencing technology is based on DNA Electronics’ semiconductor sequencing IP. DNA Electronics has also licensed its Genalysis® technology platform to GENEU™, a company that is delivering on-the-spot genetic analytics services for cosmetics and skincare applications.

 

For more information: http://www.dnae.co.uk


Via idtdna, Dr. Stefan Gruenwald
Russ Roberts's insight:

The remarkable new diagnostic tool can show the results of a DNA test within minutes.  The device uses silicon transistors to identify DNA and RNA, and can serve as a cheaper, faster alternative to existing DNA test equipment. Here's a perfect example of thinking "out of the box" to solve a major healthcare issue.  Aloha de Russ (KH6JRM).

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SKYWARN WARRIORS: Local ham radio buffs work front lines for National Weather Service

SKYWARN WARRIORS: Local ham radio buffs work front lines for National Weather Service | KH6JRM's Amateur Radio Blog | Scoop.it
The National Weather Service has radar, satellites, Doppler, and double Doppler.
But even with all of that high technology, it still needs boots on the ground to know how the weather is affecting people.
Russ Roberts's insight:

An excellent public relations article by reporter Jack Minch, highlighting the contributions of amateur radio operators who are SKYWARN observers for the National Weather Service.  National Weather Service meteorologist Glenn Fields says, "A lot of our reports do come from amateur radio", adding that "Ham Radios are good because they are battery powered and it doesn't matter if the electricity goes out in a storm."  This is another example of amateur radio operators helping their community in times of natural disaster. Aloha de Russ (KH6JRM).

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Copasetic Flow: Standing Wave Ratio, or SWR, A Ham Radio Exam ...

Copasetic Flow: Standing Wave Ratio, or SWR, A Ham Radio Exam ... | KH6JRM's Amateur Radio Blog | Scoop.it
The amount of energy reflected is determined by how well the impedances of the antenna, the transmission line, and the transmitter match. The reflected rf energy can enter the transmitter and damage the final radio frequency ...
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A nice, compact review (with questions) of the standing wave ratio (SWR).  This brief guide will help aspiring amateur radio licensees understand the working of SWR.  Hamilton Carter (KD0FNR) reviews SWR test questions and highlights  the correct choices.  A good, general review for taking the Technician Class Amateur Radio License.  Aloha de Russ (KH6JRM).

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Mysterious signal from the center of the Perseus Cluster unexplained by known physics

Mysterious signal from the center of the Perseus Cluster unexplained by known physics | KH6JRM's Amateur Radio Blog | Scoop.it

Astronomers using NASA's Chandra X-ray Observatory to explore the Perseus Cluster, a swarm of galaxies approximately 250 million light years from Earth, have observed the spectral line that appears not to come from any known type of matter.

 

Perseus Cluster a collection of galaxies and one of the most massive known objects in the Universe, immersed in an enormous 'atmosphere' of superheated plasma. It is approximately 768 000 light years across. "I couldn't believe my eyes," says Esra Bulbul of the Harvard Center for Astrophysics.  "What we found, at first glance, could not be explained by known physics."


"The cluster's atmosphere is full of ions such as Fe XXV,  Si XIV, and S XV.  Each one produces a 'bump' or 'line' in the x-ray spectrum, which we can map using Chandra. These spectral lines are at well-known x-ray energies."

 

Yet, in 2012 when Bulbul added together 17 day's worth of Chandra data, a new line popped up where no line should be. "A line appeared at 3.56 keV (kilo-electron volts) which does not correspond to any known atomic transition," she says.  "It was a great surprise."

 

We detected a weak unidentified emission line at E=(3.55-3.57)+/-0.03 keV in a stacked XMM spectrum of 73 galaxy clusters spanning a redshift range 0.01-0.35. MOS and PN observations independently show the presence of the line at consistent energies.


When the full sample is divided into three subsamples (Perseus, Centaurus+Ophiuchus+Coma, and all others), the line is significantly detected in all three independent MOS spectra and the PN "all others" spectrum. It is also detected in the Chandra spectra of Perseus with the flux consistent with XMM (though it is not seen in Virgo). However, it is very weak and located within 50-110eV of several known faint lines, and so is subject to significant modeling uncertainties. On the origin of this line, we argue that there should be no atomic transitions in thermal plasma at this energy. An intriguing possibility is the decay of sterile neutrino, a long-sought dark matter particle candidate.


Assuming that all dark matter is in sterile neutrinos with m_s=2E=7.1 keV, our detection in the full sample corresponds to a neutrino decay mixing angle sin^2(2theta)=7e-11, below the previous upper limits. However, based on the cluster masses and distances, the line in Perseus is much brighter than expected in this model. This appears to be because of an anomalously bright line at E=3.62 keV in Perseus, possibly an Ar XVII dielectronic recombination line, although its flux would be 30 times the expected value and physically difficult to understand. In principle, such an anomaly might explain our line detection in other subsamples as well, though it would stretch the line energy uncertainties. Another alternative is the above anomaly in the Ar line combined with the nearby 3.51 keV K line also exceeding expectation by factor 10-20. Confirmation with Chandra and Suzaku, and eventually Astro-H, are required to determine the nature of this new line.


Via Dr. Stefan Gruenwald
Russ Roberts's insight:

Thanks to Dr. Stefan Gruenwald for this fascinating look at a genuine mystery.  Astronomers don't know what they picked up their instruments when observations of the Perseus Cluster were processed.  Is this  unexplained phenomena, something beyond our known physics, or perhaps something akin to Jodie Foster's discovery in the film "Contact?"  In that film, amateur radio provided the background texture of the plot.  Whatever that signal was, it will keep scientists busy for a while.  Astronomers will have to confirm the data "with Chandra and Suzaku and eventually Astro-H...to determine the nature of this new line." We are not alone in this universe. Aloha de Russ (KH6JRM).

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SETTING UP AN AMATEUR RADIO STATION: Help For The New General Class Radio Operator - Kindle edition by Bob Patterson K5DZE. Crafts, Hobbies & Home Kindle eBooks @ Amazon.com.

SETTING UP AN AMATEUR RADIO STATION: Help For The New General Class Radio Operator - Kindle edition by Bob Patterson K5DZE. Download it once and read it on your Kindle device, PC, phones or tablets.
Russ Roberts's insight:

A helpful, easy- to- "digest" tutorial by Bob Patterson (K5DZE).  I found the text understandable and accurate.  I downloaded the e-book version from Amazon.com onto a "Kindle" app I had on my PC.  There's a lot of useful information in this volume.  Aloha de Russ (KH6JRM).

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Wire_Antennas_for_Ham_Radio

Wire_Antennas_for_Ham_Radio | KH6JRM's Amateur Radio Blog | Scoop.it
"Wire Antennas for Ham Radio"
Resource via YO3DAC / VA3IUL
#hamr #AmRad http://t.co/mcfqCtHT1C
Russ Roberts's insight:

Beautifully simple and clear descriptions of 230 proven antenna designs.  If you need an antenna idea, this is the site to check.  Great job by Iulian Rosu (YO3DAC/VA3IUL).  Antennas range from "Tee antennas" to a "Five element vertical log Periodic for 80, 40, and 20 meters."  For details, visit http://www.qsl.net/va3iul. ; Aloha de Russ (KH6JRM).

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California Hams Activate to Support Shelter Communications Following Wildfire

California Hams Activate to Support Shelter Communications Following Wildfire | KH6JRM's Amateur Radio Blog | Scoop.it
The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, information and resources.
Russ Roberts's insight:

California hams were kept busy 26-27 July 2014 as they provided communications service to local emergency managers and The American Red Cross, which responded to a fast-spreading fire in Tuolumne County.  Amateur radio operators supported communications  at a shelter in Groveland.  According to Tuolumne County ARES Emergency Coordinator Carl Croci (NI6Z),  hams set up a UHF/VHF cross-band system between the Red Cross Headquarters in Fresno, California and the shelter site in Groveland.  Amateur radio operators were able to stand down the following day (27 July 2014) after 20 hours of emergency communications service.  Aloha de Russ (KH6JRM).

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Ham Amateur Radio Antennas, 35' Crankup Tower laydown

Ham Amateur Radio Antennas, 35' Crankup Tower laydown | KH6JRM's Amateur Radio Blog | Scoop.it
US $799.99 Used in Consumer Electronics, Radio Communication, Antennas (Check out Ham Amateur Radio Antennas, 35' Crankup Tower laydown http://t.co/dDfiBM5KTO via @eBay #hamradio #ham #amateurradio)...
Russ Roberts's insight:

If  you're in the market for a crank-up tower, you may want to contact this seller.  The tower is located in Riverview, Florida.  Local pickup only.  As with any internet purchase, check out the seller and the condition of the merchandise before you buy.  Aloha de Russ (KH6JRM).

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Beyond GPS: Five next-generation technologies

Beyond GPS: Five next-generation technologies | KH6JRM's Amateur Radio Blog | Scoop.it

Several DARPA programs are exploring innovative technologies and approaches that could supplement GPS to provide reliable, highly accurate real-time positioning, navigation and timing (PNT) data for military and civilian uses and deal with possible loss of GPS accuracy from solar storms or jamming, for example.

 

DARPA Director Arati Prabhakar  said DARPA currently has five programs that focus on PNT-related technology.

 

Adaptable Navigation Systems (ANS) is developing new algorithms and architectures that can create better inertial measurement devices. By using cold-atom interferometry, which measures the relative acceleration and rotation of a cloud of atoms stored within a sensor, extremely accurate inertial measurement devices could operate for long periods without needing external data to determine time and position. ANS also seeks to exploit non-navigational electromagnetic signals — including commercial satellite, radio and television signals and even lightning strikes — to provide additional points of reference for PNT.

 

Microtechnology for Positioning, Navigation, and Timing (Micro-PNT) leverages extreme miniaturization made possible by DARPA-developed micro-electromechanical systems (MEMS) technology. These include precise chip-scale gyroscopes, clocks, and complete integrated timing and inertial measurement devices. DARPA researchers have fabricated a prototype with three gyroscopes, three accelerometers and a highly accurate master clock on a chip that fits easily on the face of a penny.

 

Quantum-Assisted Sensing and Readout (QuASAR) intends to make the world’s most accurate atomic clocks — which currently reside in laboratories — both robust and portable. QuASAR researchers have developed optical atomic clocks in laboratories with a timing error of less than 1 second in 5 billion years. Making clocks this accurate and portable could improve upon existing military systems such as GPS, and potentially enable entirely new radar, LIDAR, and metrology applications.

 

The Program in Ultrafast Laser Science and Engineering (PULSE) applies the latest in pulsed laser technology to significantly improve the precision and size of atomic clocks and microwave sources, enabling more accurate time and frequency synchronization over large distances. It could enable global distribution of time precise enough to take advantage of the world’s most accurate optical atomic clocks.

 

The Spatial, Temporal and Orientation Information in Contested Environments (STOIC) program seeks to develop PNT systems that are independent of GPS: long-range robust reference signals, ultra-stable tactical clocks, and multifunctional systems that provide PNT information between multiples users.


Via Dr. Stefan Gruenwald
Russ Roberts's insight:

Thanks to Dr. Stefan Gruenwald for this fascinating article.  According to Gruenwald, major changes are coming in the way we do GPS.  DARPA Director Arati Prabhakar said backup  plans are being made to keep the nation's digital network functioning after a "Carrington Event" super flare from the sun.  These changes will also affect the ARPS system used by amateur radio operators.  Prabhakar said DARPA is looking into these technologies:

 

Adaptable Navigation Systems.

Microtechnology for position, navigation, and timing.

Quantum-assisted sensing and readout (QUASAR).

The Program in ultrafast laser science and engineering.

The spatial, temporal, and overt information in contested environments  program.

 

Exciting times are ahead for the military, civilian industry, and even amateur radio operators.  Aloha de Russ (KH6JRM).

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VK9X returns to the air.

Activity expected between late July and Early August 2014.

Russ Roberts's insight:

Source: Southgate Amateur Radio Club.

 

A Japanese team will activate  Christmas Island (VK9X) and Cocos-Keeling Island (VK9X) between late July and early August 2014.  According to the Southgate Amateur Radio Club, "Activity will be a holiday style on 160-6 meters using CW, SSB, FM, RTTY, and PSK31."  Aloha de Russ (KH6JRM).

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$5 LED DC Volt Meter video

of While at the SEAPAC Ham Radio Hamfest Randy Hall K7AGE bought a couple of $5 LED digital volt meters

Read the full Southgate News story... (Amateur Radio - $5 LED DC Volt Meter video: While at the SEAPAC Ham Radio Hamfest Randy Hall K...

Russ Roberts's insight:

Check out htis video from Randy Hall (K7AGE) who used a couple of cheap LEDs bought at the recent SEAPAC conference to make a nifty LED digital volt meter.  Nice project. Aloha de Russ (KH6JRM).

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APRS RF Bluetooth Communications

This photo is of my Blackberry Z30 running APRSDroid, and they are communicating via Bluetooth with the tiny tnc you see attached to the back of the UV-3R.
Russ Roberts's insight:

Innovative and fascinating project by Jerry Clement (VE6AB). Jerry has an interesting site, loaded with excellent photographs and home brewed projects.  As you can gather from his site, Jerry chases storms and reports on local weather conditions for his province.  You can contact Jerry here:  stormchaser@shaw.ca.  Aloha de Russ (KH6JRM).

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Army MARS at the ARRL Convention: - eHam.net

Army MARS at the ARRL Convention:
eHam.net
... so backpack HF radios carried by U.S. troops, its whip antenna extended and ready for action.
Russ Roberts's insight:

Nice article by Bill Sexton (N1IN0), the Army MARS HQ Public Affairs Officer.  Bill reviews some of the activities Army MARS did at its booth at the ARRL Centennial Celebration in Hartford,Connecticut.  He provided an excellent description of the ALE (automatic link establishment) display at the convention, using the PRC-150 manpack HF radio.  For more information on Army MARS go here:

williamc.sexton@gmail.com.  Aloha de Russ (KH6JRM).

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Ultra-precise atomic clock will reveal if physical constants really are constant

Ultra-precise atomic clock will reveal if physical constants really are constant | KH6JRM's Amateur Radio Blog | Scoop.it

A second is always a second. Nevertheless, no clocks are so precise that they can measure the exact duration of a second. So even the most precise atomic clocks are 0.000000000000000001 seconds off each second. Over the course of a few billion years that equals one second.


A single second off over the course of a few billion years may sound like a very precise clock -- and in a way it is but scientists from the University of Copenhagen would like a clock that is even more precise.

 

So now the scientists are suggesting that the atomic clocks around the world be connected by light rays; creating one big network of atomic clocks.

 

This network would measure time more precisely than ever before.

“A more precise clock would lead to a number of new, interesting possibilities,” says Professor Anders Søndberg Sørensen of the Niels Bohr Institute who recently co-authored a proposal for an improved atomic clock that was published in Nature Physics.

 

With more precise clocks come more precise experiments, and with more precise experiments come new technological possibilities. The Global Position System (GPS) for instance, only became possible when a new clock was invented that was so precise that it could measure how long it took for a signal from a GPS transmitter on Earth to reach satellites in space. Similarly, researchers hope that a more precise clock will lead to new scientific possibilities – and solve the debate over whether constants of nature are really constant at all.


Via Mariaschnee, Dr. Stefan Gruenwald
Russ Roberts's insight:

Thanks to Dr. Stefan Gruenwald for this interesting look at time and how we track it.  The University of Copenhagen, Denmark is "suggesting the atomic clocks around the world be connected by light rays, creating a big network of atomic clocks."  University of Copenhagen scientists believe more precise measurement means more technological possibilities.  With better clocks, we might be able to answer the big question--"whether constants of nature are really constant at all."  Something to think about when you coordinate your time with WWVB/WWV.  Aloha de Russ (KH6JRM).

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Roger G3XBM's Amateur Radio Blog: KX3 antenna failure

Roger G3XBM's Amateur Radio Blog: KX3 antenna failure | KH6JRM's Amateur Radio Blog | Scoop.it
I read on the M1KTA blog that an antenna lead on one of his Elecraft KX3 units has failed. I know these have seen some harsh portable field use but I would not have expected this. I have owned an FT817 for close on 14 ...
Russ Roberts's insight:

Roger (G3XBM) doesn't think too highly of the Elecraft KX3 for field opeations.  Citing an earlier report by M1KTA (see earlier post ) concerning an antenna lead failure in the KX3, Roger says the "KX3 is overpriced...and not well built for field use."  Roger believes the cheaper Yaesu FT-817ND has more features and is preferred for "Harsh field use."  Roger also criticizes the KX3 for its "mess of leads, coming out all over the place....the FT-817 is neat, rugged and compact."  As you may have guessed, Roger prefers his Yaesu FT-817ND to other QRP rigs.  I think his criticism of the KX3 is a bit harsh.  Aloha de Russ (KH6JRM).

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M1KTA's QRP ham radio blog: Some antennas... and one of ...

M1KTA's QRP ham radio blog: Some antennas... and one of ... | KH6JRM's Amateur Radio Blog | Scoop.it
Some antennas... and one of SotaBeams Wirewinders. Now got the antennas all up. Had to put up the Union flag on the 10/12/25/17/20. Light house, 80m dipole (I can use almost vertical down too and bottom feed so it is a ...
Russ Roberts's insight:

Nice discussion from M1KTA on the kinds of antennas he uses during QRP operations.  His blog also contains a variety of interesting articles, including the Elecraft KX3, the W3EDP antenna, a review of the Chinese Rock Mite QRP transmitter, a look at the GY560 frequency counter, and a photo essay on a lightning strike.  Aloha de Russ (KH6JRM).

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FCC Amateur Radio Technician, General and, Extra Class Question Pool Study Aid - Kindle edition by Jason Canfield. Professional & Technical Kindle eBooks @ Amazon.com.

FCC Amateur Radio Technician, General and, Extra Class Question Pool Study Aid - Kindle edition by Jason Canfield. Download it once and read it on your Kindle device, PC, phones or tablets.
Russ Roberts's insight:

This book by Jason Canfield contains the complete FCC question pool for the Technician, General, and Extra Class Licensing exam.  You can download the volume to your Kindle device, smart phone, tablet, or PC.  Aloha de Russ (KH6JRM).

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Pofung UV-5R 136-174/400-520MHz Dual-Band Two-way Ham Amateur Radio Transceiver

Pofung UV-5R 136-174/400-520MHz Dual-Band Two-way Ham Amateur Radio Transceiver | KH6JRM's Amateur Radio Blog | Scoop.it
in Consumer Electronics, Radio Communication, Walkie Talkies, Two-Way Radios (Pofung UV-5R 136-174/400-520MHz Dual-Band Two-way Ham Amateur Radio Transceiver http://t.co/KTWSDj5JW9 #prepping #survival...
Russ Roberts's insight:

Here's another batch of Chinese-made HTs.  I'm not familiar with the Pofung brand.  On the surface, the HT looks good at a reasonable price.  There are a few caveats however.  Be sure there is a return policy in case you don't like the radio or its features.  Some of the Chinese HTs are difficult to program.  Be sure to get the appropriate cables and software to make the HT usable for your situation.  If you're unsure of this brand, consider a more familiar brand such as Yaesu, Kenwood, Alinco, Icom, or even Wouxan (Chinese).  Aloha de Russ (KH6JRM).

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