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KH6JRM's Amateur Radio Blog
Amateur Radio--news, analysis, discussion, and antennas
Curated by Russ Roberts
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Amateur Radio - Radio Contacts can be Learning Experiences

Amateur Radio - Radio Contacts can be Learning Experiences | KH6JRM's Amateur Radio Blog | Scoop.it
One of my favorite aspects of amateur radio is learning. It isn't the type of learning that most people would associate with learning from amateur radio, though.  When many think of learning from a...
Russ Roberts's insight:

An interesting and somewhat intriguing view from Mac McCormick, KF4LMT.  I've had the same experience as Mac.  There is so much to learn from our fellow amateur radio operators.  Aloha de KH6JRM.

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Boston Marathon 2013 – Bombs, Carnage and Amateur Radio Operators | W3ATB

Boston Marathon 2013 – Bombs, Carnage and Amateur Radio Operators | W3ATB | KH6JRM's Amateur Radio Blog | Scoop.it
Boston Marathon 2013 – Bombs, Carnage and Amateur Radio Operators http://t.co/XB7C9ijsQ6
Russ Roberts's insight:

Thanks to Tim Carter, W3ATB, for an excellent article on the Boston Marathon bombings....lots of thought-provoking ideas in this piece.  Aloha de KH6JRM.

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The Wireless Institute of Australia

The Wireless Institute of Australia | KH6JRM's Amateur Radio Blog | Scoop.it
Amateur Radio Antennas and Masts in NSW new laws coming! http://t.co/eufB5E27BM
Russ Roberts's insight:

Apparently, our Australian friends have found a partial solution to the tower and HOA restrictions that many amateur radio operators in the U. S. are facing.  Aloha de KH6JRM.

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Conway Reef 1995

Conway Reef 1995 | KH6JRM's Amateur Radio Blog | Scoop.it
The 1995 Conway Reef DX-pedition was a follow up mission to the T33KK/CS DX-pedition which took place in 1994. The intention was actually to visit T31 and ZK3 at this time but we could not find eno...
Russ Roberts's insight:

Interesting article on this remote location.  The April 2013 edition of "CQ" has a fascinating article on the recent DX-pedition to 3D2C (Conway Reef) by AH6HY.  That trip took place between 26 September and 03 October 2012. It seems the expedition was bothered by sand fleas and ticks.  Good read, though.  Aloha de KH6JRM.

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OSSI-1 Amateur Radio CubeSat launched - Southgate Amateur Radio Club

OSSI-1 Amateur Radio CubeSat launched
Southgate Amateur Radio Club
The launch vehicle initially went into an initial elliptical orbit of 290 km by 575 km orbit at an inclination of 64.9°.
Russ Roberts's insight:

Congratulations to Korean artist and amateur operator Hojun Song (DS1SBO), who spent seven years designing the satellite and its open source software.  The "bird" has a 12 wpm code beacon and a data transmitter on board.  Aloha de KH6JRM.

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Analyzing polar plots - Test & Measurement World (blog)

Analyzing polar plots - Test & Measurement World (blog) | KH6JRM's Amateur Radio Blog | Scoop.it
Test & Measurement World (blog)
Analyzing polar plots
Test & Measurement World (blog)
Of course, it helps to understand the typical radiation patterns from antennas and any good antenna book will show typical polar plots, given the antenna type.
Russ Roberts's insight:

This stuff was always a bit confusing to me.  This article clears up a lot of "grey" areas concerning polar plots and antenna patterns.  Take your time with this article...it contains some good, basic information.  Aloha de KH6JRM.

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Orbital Reschedules New Antares Rocket Launch Window after Winds Prevent Saturday Launch | SpaceRef

Orbital Reschedules New Antares Rocket Launch Window after Winds Prevent Saturday Launch | SpaceRef | KH6JRM's Amateur Radio Blog | Scoop.it

(Dulles, VA 20 April 2013) - Orbital Sciences Corporation (NYSE: ORB), one of the world's leading space technology companies, today announced that excessive, high-altitude wind speeds prevented the planned April 20 launch attempt of the Antares rocket from the Mid-Atlantic Regional Spaceport (MARS) launch pad at NASA's Wallops Flight Facility on Wallops Island, Va.

"Given the winds and wind direction, the debris requirement for the Range and Federal Aviation Administration could not be achieved today," said Mr. Frank Culbertson, Orbital's Executive Vice President and Mission Director for the Antares Test Flight. "This requirement keeps any potential debris from falling outside of a predefined area in the event of an anomaly. Flight requirements dictate that we stop the countdown and pick it up when the conditions improve."

 

 


Via Stratocumulus
Russ Roberts's insight:

This launch platform contains several amateur radio "phonesats".  Aloha de KH6JRM.

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AR Newsline - News - Amateur Radio Newsline Report 1862 April 19 2013 

AR Newsline - News - Amateur Radio Newsline Report 1862 April 19 2013  | KH6JRM's Amateur Radio Blog | Scoop.it
Ham radio responds after a terror attack on the Boston Marathon
SARL gets two frequencies at...
Russ Roberts's insight:

The latest news from AR Newsline.  Aloha de KH6JRM.

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Ham Radio at the Boston Marathon - Incredible Stories

--> Every ham should (IMHO) go to HamRadioNow from ARVN and watch Gary's interviews in shows #74 and #75.
Russ Roberts's insight:

These shows are worth watching.  Aloha de KH6JRM.

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Amateur Radio FUNcube Project - Your advice requested

Amateur Radio FUNcube Project - Your advice requested | KH6JRM's Amateur Radio Blog | Scoop.it
As part of the FUNcube project we now need to urgently decide which is going to be the best type of antenna to propose for use at schools and colleges to receive the 145MHz downlink signals from bo...
Russ Roberts's insight:

You can send your antenna ideas for this FUNcube project to Graham (G3VZV)....g3vzv@amsat.org   Good luck.  Aloha de KH6JRM.

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Episode 74: Ham Radio at the Boston Marathon, Part One

Episode 74: Ham Radio at the Boston Marathon, Part One from HamRadioNow. Like this? Watch the latest episode of HamRadioNow on Blip!
Russ Roberts's insight:

An interesting program...lots of intriguing background stories and facts.  Aloha de KH6JRM.

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Sultan orders construction of headquarters for ROARS - Southgate Amateur Radio Club

Sultan orders construction of headquarters for ROARS Southgate Amateur Radio Club His Majesty Sultan Qaboos Bin Said has ordered the construction of a permanent headquarters for the Royal Omani Amateur Radio Society (ROARS) on the piece of land...
Russ Roberts's insight:

Congratulations to the Royal Omani Amateur Radio Society for getting His Majesty Sultan Qaboos Bin Said to support this project.  It pays to have the friendship of influencial people who believe in Amateur Radio.  Aloha de KH6JRM.

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Wallingford STEM students to talk with astronauts in space

Wallingford STEM students to talk with astronauts in space | KH6JRM's Amateur Radio Blog | Scoop.it
WALLINGFORD — Local students will soon have the opportunity to interact with astronauts aboard the International Space Station through a partnership between the CT STEM Academy of Wallingford and the NASA Amateur Radio International Space Station...
Russ Roberts's insight:

This should be quite an experience for these young scholars.  Aloha de KH6JRM.

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Radio hams active in Argentina floods

Radio hams active in Argentina floods | KH6JRM's Amateur Radio Blog | Scoop.it
Radio
amateurs in Argentina are providing communications support in response
to flooding.
Russ Roberts's insight:

It appears that our Argentine friends are doing a great job of helping those in need.  Same goes for the amateur radio operators in the Peoples Republic of China who responded to the recent devastating earthquake.  Aloha de KH6JRM.

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The darkside of ham radio

Like any thing ham radio has its share of dorks (I liked a @YouTube video from @dighsx http://t.co/7bpncrTi0m The darkside of ham radio)
Russ Roberts's insight:

During my 36 years of amateur radio experience, I've run into my share of strange and slightly offbeat characters.  If you think amateur radio has the corner on the anti-social crowd, just try commercial broadcasting.  When I was a news guy on a radio station in Hilo, I received numerous threats of bodily harm or worse when I aired stories on controversial subjects ranging from the legalization of marijuana (a big crop on Hawaii Island) to unsolved murders.  You're always going to find people whose sole aim in life is to ruin the aspirations of others.  Ignore them if you can...they aren't worth the time soothing their overinflated egos.  The VFO is a very useful device on your transceiver.  Aloha de KH6JRM.

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New QRSS/WSPR ham radio kit - Southgate Amateur Radio Club

New QRSS/WSPR ham radio kit
Southgate Amateur Radio Club
Hans Summers G0UPL has introduced a new standalone QRSS/WSPR amateur radio HF kit, the Ultimate2 It is a new improved version of the "Ultimate" kit announced last June.
Russ Roberts's insight:

Here's something for us kit builders. Aloha de KH6JRM.

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Ham Radio Tutorial - Your first radio!

This is a video about buying your very first ham radio! I also make some recommendations about good models to pick as a first radio. There are many more opti...
Russ Roberts's insight:

A good review of the equipment available.  Of course, what you need will be determined by price, portability, and spectrum you wish to cover.  Aloha de KH6JRM.

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Chinese Amateurs Assist in Earthquake Aftermath - ARRL

Chinese Amateurs Assist in Earthquake Aftermath - ARRL | KH6JRM's Amateur Radio Blog | Scoop.it
The Chinese Radio Sports Association and Chinese Radio Amateur Club ask all amateurs to avoid 3855, 7050 and 14270 kHz as these frequencies will be used for disaster relief communications. Our thanks to Fan Bin, ...
Russ Roberts's insight:

It appears that our amateur radio colleagues in the Peoples Republic of China are doing a good job of providing emergency communications in this earthquake devastated area.  Please keep 3855 KHz, 7050 KHz, and 14270 KHz free for emergency coms.  Aloha de KH6JRM.

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AMSAT & ISS amateur radio news

AMSAT & ISS amateur radio news | KH6JRM's Amateur Radio Blog | Scoop.it
Go to AMSAT News for the latest headlines about developments in amateur and student satellites and for updates about amateur radio on the ISS. ANS 111 Weekly AMSAT Bulletin - April 20, 2013: * Apri...
Russ Roberts's insight:

Here's the latest update from AMSAT and the folks monitoring the International Space Station.  Aloha de KH6JRM.

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Extreme Miniaturization: Seven Devices, One Chip to Navigate without GPS

Extreme Miniaturization: Seven Devices, One Chip to Navigate without GPS | KH6JRM's Amateur Radio Blog | Scoop.it

The U.S. Military relies on the space-based Global Positioning System (GPS) to aid air, land and sea navigation. Like the GPS units in many automobiles today, a simple receiver and some processing power is all that is needed for accurate navigation. But, what if the GPS satellites suddenly became unavailable due to malfunction, enemy action or simple interference, such as driving into a tunnel? Unavailability of GPS would be inconvenient for drivers on the road, but could be disastrous for military missions. DARPA is working to protect against such a scenario, and an emerging solution is much smaller than the navigation instruments in today’s defense systems.

 

DARPA researchers at the University of Michigan have made significant progress with a timing & inertial measurement unit (TIMU) that contains everything needed to aid navigation when GPS is temporarily unavailable. The single chip TIMU prototype contains a six axis IMU (three gyroscopes and three accelerometers) and integrates a highly-accurate master clock into a single miniature system, smaller than the size of a penny. This chip integrates breakthrough devices (clocks, gyroscopes and accelerometers), materials and designs from DARPA’s Micro-Technology for Positioning, Navigation and Timing (Micro-PNT) program.

 

Three pieces of information are needed to navigate between known points ‘A’ and ‘B’ with precision: orientation, acceleration and time. This new chip integrates state-of-the-art devices that can measure all three simultaneously. This elegant design is accomplished through new fabrication processes in high-quality materials for multi-layered, packaged inertial sensors and a timing unit, all in a tiny 10 cubic millimeter package. Each of the six microfabricated layers of the TIMU is only 50 microns thick, approximately the thickness of a human hair.  Each layer has a different function, akin to floors in a building. 

 

“Both the structural layer of the sensors and the integrated package are made of silica,” said Andrei Shkel, DARPA program manager. “The hardness and the high-performance material properties of silica make it the material of choice for integrating all of these devices into a miniature package. The resulting TIMU is small enough and should be robust enough for applications (when GPS is unavailable or limited for a short period of time) such as personnel tracking, handheld navigation, small diameter munitions and small airborne platforms.” 


Via Dr. Stefan Gruenwald
Russ Roberts's insight:

Here's something from DARPA research that could help GPS and other location systems.  According to the article, the TIMU "is small enought and sould be robust enough for applications (when GPS is unavailable or limited for a short period of time) such as personnel tracking, handheld navigation, small diameter munitions and small ariborne platforms."  There may be some amateur radio applications for this technology.  Stay tuned. Aloha de KH6JRM.

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Radio Amateur activity from K1YPP this summer.

Radio Amateur activity from K1YPP this summer. | KH6JRM's Amateur Radio Blog | Scoop.it
Here's a post I thought you'd like. (RT @k1ypp: Look for K1YPP #QRP on #Hamradio this summer from Europe on hiking and biking trip.
Russ Roberts's insight:

It may be interesting to follow K1YPP as he walks and bikes through Europe.  Aloha de KH6JRM.

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Official web site of the Radio Amateur Society of Thailand under the Royal Patronage of His Majesty the King

Official web site of the Radio Amateur Society of Thailand under the Royal Patronage of His Majesty the King | KH6JRM's Amateur Radio Blog | Scoop.it
RT @Tonyzdx: Watch Thailand's 3rd amateur radio ballooning expedition from 9 a.m.on Sunday, April 21 live on TV Ch 3's analog freq http://t.co/E6XpV6HBBK
Russ Roberts's insight:

It's nice to see Amateur Radio in Thailand recovering from the disastrous flodds of 2011.  If you're lucky, you may be able to receive signals from RAST's 3rd annual ballooning expedition of 21 April.  Aloha de KH6JRM.

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DXpedition to Vientiane, Laos | Southgate Amateur Radio News

A multi-national, multi-operator, DXpedition to Vientiane, Laos, is being planned for September 6-16th, 2013 (DXpedition to Vientiane, Laos | Southgate Amateur Radio News: http://t.co/m9k0DyBUrm)...
Russ Roberts's insight:

If you don't have Laos in your log book, this expedition could fulfill that need.  Aloha de KH6JRM.

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Russia and Poland offer World Amateur Radio Day Awards - Southgate Amateur Radio Club

Russia and Poland offer World Amateur Radio Day Awards
Southgate Amateur Radio Club
World Amateur Radio Day (WARD) takes place Thursday, April 18 and awards are available from both Russia and Poland.
Russ Roberts's insight:

Here's your chance to get some Russian and Polish stations in your log and to help celebrate World Amateur Radio Day.  Aloha de KH6JRM.

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Radio Amateurs get $25000 for CubeSat from JPL - Southgate Amateur Radio Club

Radio Amateurs get $25000 for CubeSat from JPL - Southgate Amateur Radio Club | KH6JRM's Amateur Radio Blog | Scoop.it
Radio Amateurs get $25000 for CubeSat from JPL
Southgate Amateur Radio Club
Radio Amateurs get $25,000 for CubeSat from JPL.
Russ Roberts's insight:

The grant will cover some basic costs of the satellite.  The satellite should be completed by December 2014.  It will hitch a ride with a future space shuttle mission.  For details, visit http://sundial.cusn.edu/2013/04/students-and-faculty-work-to-launch-shoebox-sized-satellite. ; Aloha de KH6JRM.

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