LHS Episode #117: On Point (For Once)

pointlinuxHello, podcast listeners! It's getting cold outside. Now would be a good time to curl up in your favorite chair with your media player, a warm fire and an episode of Linux in the Ham Shack. As it happens, we have a new one for you right now. Your hosts discuss some newly updated ham radio software for Linux, including a lightweight logging application, CW decoder and VHF propagation modeler. Then they give you an in-depth peek at the distribution known as Point Linux. All of that is followed by feedback and a few announcements that you really should stay tuned for. Please enjoy, and thanks for being a valued member of the Linux in the Ham Shack community.

73 de The LHS Guys


Russ Woodman, K5TUX, co-hosts the Linux in the Ham Shack podcast which is available for download in both MP3 and OGG audio format. Contact him at [email protected].

When All Else Fails or SHTF?

when-all-else-fails-logoA while back, Dan KB6NU noted the increasing number of preppers getting involved in ham radioPreppers are people who are actively preparing for emergencies, natural disasters and disruption of social order. In our Technician license course, we’ve noticed an increase in the number of people identifying themselves as preppers.

Of course, amateur (ham) radio has a long history of emergency service and disaster preparedness. FCC Rules Part 97 says this is one of the purposes of the Amateur Radio Service: Recognition and enhancement of the value of the amateur service to the public as a voluntary noncommercial communication service, particularly with respect to providing emergency communications.

Historically, most radio amateurs approach the hobby from a technical or radio operating point of view, then find ways to apply it to emergency preparedness. The prepper tends to work the equation the other way…starting with the desire to have emergency communication capability and then working to get an amateur radio license.

Many prepper sites just give a quick overview of ham radio, positioning it with GMRS, FRS and CB radio. See Prepper Communications. Articles like this one give a more complete introduction to ham radio: The Skinny On Ham: Getting Licensed.  This one, too: Every Prepper Should Be A Ham.

You may run into some creative acronyms on these prepper sites:

SHTF = ”Stuff” Hits The Fan
EOTW = End Of The World
TEOTWAWKI = The End Of The World As We Know It
YOYO – You’re On Your Own

There are web sites devoted to prepping with radio communications:

Prepared Ham
RadioSurvivalist.com
RadioMaster Reports

Many of these sites have useful information that may stretch your thinking on “being prepared.” Of course, some of these prepper sites (not the ones listed above) are a bit over the top and may have resulted from people going off their meds. Draw your own conclusions.

I’ve noticed a pattern of people creating prepper frequency lists, such as the one shown below. (Note that some of the ham frequencies listed do not conform to generally accepted band plans.) I can see the usefulness of having some assigned frequencies but its not clear to me how they’ll actually get used. I think the challenge for new prepper hams is to think through who they are going to communicate with and for what purpose. It’s also important to get familiar with the equipment and gain experience on the air, so when the EOTW happens you aren’t sitting there reading the radio manual.

shtf_frequency_list_2013e_500

Whether you think of emergency communications as “When All Else Fails” or when SHTF, amateur radio is a resilient communication tool.

73, Bob K0NR

Added 7 Dec 2013: I came across this video that does a good job of introducing ham radio to the prepper crowd:  So you want a ham radio for emergency communications!


Bob Witte, KØNR, is a regular contributor to AmateurRadio.com and writes from Colorado, USA. Contact him at [email protected].

Interesting articles

http://blogs.smithsonianmag.com/design/2013/10/how-the-telegraph-went-from-semaphore-to-communication-game-changer/

and

http://online.wsj.com/news/articles/SB10001424052702304672404579183940409194498

No luck today at lunchtime. One of those rare days where I got skunked.

72 de Larry W2LJ
QRP – When you care to send the very least!


Larry Makoski, W2LJ, is a regular contributor to AmateurRadio.com and writes from New Jersey, USA. Contact him at [email protected].

A personal challenge

I went out to the car during lunchtime today.  Temperatures here in New Jersey have cooled down. It was only in the upper 40s here (about 9C), so instead of standing outside and operating from the rear hatch of the Jeep, I sat inside to keep out of the breeze.  Activity on 10 Meters seems to have gotten sparse. I still hear signals, mind you, but they are not as loud and not as “wall to wall” as they were just a few weeks ago.  I don’t know if it’s that the band has changed a bit, or perhaps the novelty of 10 Meters coming back to life has worn off. In any event, I found myself on 17 Meters today, tuning around the band to hear what I could hear.

I worked EI13CLAN, whom I worked last month on 10 Meters.  He was very strong, a very legitimate 599.

The tuning around some more, I heard XF1P calling “CQ DX UP”.  OK …….. Mexico.  But the pileup was huge …… HUGE!  I wasn’t exactly sure why. Mexico is not exactly what you’d consider to be the rarest of rare DX.  I reasoned that with a pileup that big, something that I was unaware of must be “up”.  Additionally, I  took it as a personal challenge. Could a QRP station running 5 Watts to a Buddistick possibly bust that pileup?  XF1P was 599, but just barely. There was QSB to boot. I was reasonably sure that my signal would be audible on his end, but with that pileup, would I get lost in the sauce?

I sat there for about  20 minutes, listening and sending out my call. The KX3, with it’s Dual Watch feature, almost makes it unfair.  I was able to follow XF1P along the band as he would move slightly after answering each station, XF1P in my right earbud and the station he was working in my left earbud. It just became a matter of sensing his pattern and setting the transmit VFO just a tiny bit higher after each call. Also, I had to time the sending of my call –  not transmitting immediately, but waiting for the pileup to fade “just” enough where my call would be heard among the cacophony of all the true 599s that he must have undoubtedly been hearing.  Finally, I heard him send back “W2L?”. Wouldn’t you know it? True to form, all kinds of stations without a “W”,” 2″ or an “L” anywhere in their calls began blindly transmitting.  Not deterred,  I stayed with it and threw “W2LJ” out there just a couple of more times and was rewarded with a confirmation.

Coming back from lunch, a quick peek on the computer before resuming work informed me that XF1P is an IOTA DXpedition to Partida Island – NA-124 located in the Gulf of California off the coast of Baja, Mexico. It is an uninhabited island, so I guess that makes it rare as IOTA goes.  The pileup of IOTA devotees was intense, but I accepted the challenge with 5 Watts, took advantage of XF1P’s exceptional ears, and got through!  That’s always a good feeling. And it also goes to show, that if I can do this, then YOU can do it too. It just takes some persistence and a lot of listening.

72 de Larry W2LJ
QRP – When you care to send the very least!


Larry Makoski, W2LJ, is a regular contributor to AmateurRadio.com and writes from New Jersey, USA. Contact him at [email protected].

MGM 1939 film: Radio Hams / More than a Hobby

“Radio Hams” do more than play with their machines. They are also invaluable in relaying vital information during times of tragedy and disaster.

Here is a mildly entertaining look at radio hams, those amateurs sending and receiving coded messages during the late thirties when films first dealt with the subject of “radio hams.” In this case, the ham operators manage to be helpful during situations of stress, using their abilities with code to help someone in distress and to seek aid for pilots flying a missing plane.

The humorous ending has the family gathered around the radio listening to someone speaking Chinese while the narrator tells us how impressed the family was to be hearing someone across the world on their radio set.

http://www.youtube.com/watch?v=bZi7LiPNMt8

This little vintage film, a rather more serious film than many of Pete Smith’s other presentations, takes a look at how ham radios can become priceless aids during emergencies. The two stories shown, one dealing with sickness, the other with a missing plane, are bookended by a humorous look at a typical three-generation family’s fascination with their ham radio.

Of course, amateur radio, or “ham radio”, is alive and doing very well, in our modern times. Using satellites, moon-bounce communications, repeater networks, as well as shortwave, mediumwave, and longwave telecommunications technology, amateur radio continues to provide emergency services in times of need, from hurricanes, tornadoes, earthquakes, and even during such times as the infamous 9/11 atrocity. But, amateur radio also breeds invention and experimentation, always at the cutting edge of science. It is a hobby worth investigating, having room for a wide-range of interests. Preppers, science lovers, experimenters, and those with a passion to meet people from all over the world by way of radio waves, all together make up the radio hobby of amateur radio.

Clayton Moore, later famous as the Lone Ranger, appears uncredited as a ship radio operator.

Directed by Felix E. Feist

Writing Credits Buddy Adler (screenplay) (as E. Maurice Adler)

Cast (in alphabetical order)

Barbara Bedford – Mrs. Crane (uncredited)
Eleanor Counts – Miss Mulligan, Jimmy’s Sister (uncredited)
Jack Daley – Pa Mulligan (uncredited)
Robert Homans – Lighthouse Keeper (uncredited)
Clayton Moore – Ship Radio Operator (uncredited)
Alonzo Price – Clyde DeVinna (uncredited)
Jason Robards Sr. – Pilot in Distress (uncredited)
Pete Smith – Narrator (voice) (uncredited)
Harry Strang – Man in Montage (uncredited)
Phillip Terry – Co-Pilot (uncredited)
Dorothy Vaughan – Ma Mulligan (uncredited)

Produced by Pete Smith – producer (uncredited)
Music by David Snell (uncredited)
Cinematography by Robert Pittack
Film Editing by Philip W. Anderson (as Philip Anderson)
Music Department Jack Virgil – orchestrator (uncredited)
Other crew Douglas Smith – technical advisor

According to https://archive.org/details/wwIIarchive this film is in the Public Domain.
Creative Commons copyright.


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EA2LU QRP from Knox Mountain

I made a quick hike to Knox Mountain this afternoon. It was a typical, bleak November day. But I had a great time working my old friend Jorge EA2LU from Spain. He was also running 5 watts. As I approached the pond three wild ducks took off from the quiet water.

pond

It was a cold misty day. Last night it had snowed a half an inch. The snow had all melted by this afternoon. The walk was invigorating…

porch

Because everything was wet, I set up on the cabin porch. I had tossed a 10 meter wire over a branch and hooked up the KX3 with the internal tuner. There were a few DX stations working split with big pileups, so I went up to 14.060 and called CQ.

EA2LU, Jorge came right back, and it was so good to hear him. We’ve had nearly 20 QSOs since 2008. Most of them were 2-way QRP.

Just as Jorge said his weather was ugly with rain, it started to sprinkle. I could see the rain drops on the pond.

view

“UR KX3/10M wire are doing a great job,” he sent. He gave me a 569 and he was a 579.

rig

After the QSO with Jorge, I packed up and hiked the mile and a half back to the car. It’s supposed to snow again tonight.


Jim Cluett, W1PID, is a regular contributor to AmateurRadio.com and writes from New Hampshire, USA. Contact him at [email protected].

1920 film: How the Telephone Talks (A Silent Film)

This is for you vintage science film buffs: here is a circa 1920 film: How the Telephone Talks (A Silent Film).

This is an educational film from 1920 that explained the “modern” telephone. The concepts are still relevant to today’s modern versions, including the cell phone, which is both radio and telephone.

From Wiki:

A telephone, or phone, is a telecommunications device that permits two or more users to conduct a conversation when they are not in the same vicinity of each other to be heard directly. A telephone converts sound, typically and most efficiently the human voice, into electronic signals suitable for transmission via cables or other transmission media over long distances, and replays such signals simultaneously in audible form to its user. The word telephone has been adapted into the vocabulary of many languages. It is derived from the Greek: τῆλε, tēle, far and φωνή, phōnē, voice, together meaning distant voice.

First patented in 1876 by Alexander Graham Bell and further developed by many others, the telephone was the first device in history that enabled people to talk directly with each other across large distances. Telephones became rapidly indispensable to businesses, government, and households, and are today some of the most widely used small appliances.

The essential elements of a telephone are a microphone (transmitter) to speak into and an earphone (receiver) which reproduces the voice of the distant person. In addition, most telephones contain a ringer which produces a sound to announce an incoming telephone call, and a dial used to enter a telephone number when initiating a call to another telephone. Until approximately the 1970s most telephones used a rotary dial, which was superseded by the modern Touch-Tone push-button dial, first introduced by AT&T in 1963. The receiver and transmitter are usually built into a handset which is held up to the ear and mouth during conversation. The dial may be located either on the handset, or on a base unit to which the handset is connected by a cord containing wires. The transmitter converts the sound waves to electrical signals which are sent through the telephone network to the receiving phone. The receiving telephone converts the signals into audible sound in the receiver, or sometimes a loudspeaker. Telephones are a duplex communications medium, meaning they allow the people on both ends to talk simultaneously.

A landline telephone is connected by a pair of wires to the telephone network, while a mobile phone, such as a cellular phone, is portable and communicates with the telephone network by radio transmissions. A cordless telephone has a portable handset which communicates by radio transmission with the handset base station which is connected by wire to the telephone network.

The telephone network, consisting of a worldwide net of telephone lines, fiber optic cables, microwave transmission, cellular networks, communications satellites, and undersea telephone cables connected by switching centers, allows any telephone in the world to communicate with any other. Each telephone line has an identifying number called its telephone number. To initiate a telephone call the user enters the other telephone’s number into a numeric keypad on the phone.

Although originally designed for simple voice communications, most modern telephones have many additional capabilities. They may be able to record spoken messages, send and receive text messages, take and display photographs or video, play music, and surf the Internet. A current trend is phones that integrate all mobile communication and computing needs; these are called smartphones.

( http://g.nw7us.us/1996vSl )

 


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