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Posts Tagged ‘amateur radio’

Ham Radio Motorcycle Mobile [VIDEO]

October 17th, 2011 |

A few months back I posted a story about getting a bicycle and looking up way to attach a radio to it to do some mobile work. While the summer has been busy and that project is on the side for the winter, I came across this video from KH1JH, of his Motorcycle mobile. Justin shows us how he mounted an HTX-202 from Radio Shack and is able to use it while on the road on his bike. A nice little setup if I do say so. Wish I could have a nice big hog to ride while doing 2 meters. That would be fun I bet! But I digress, here is Justin’s video. Enjoy!

73.

Rich also writes a Tech blog and posts stories every Tuesday and Thursday on Q103, Albany’s #1 Rock Station website, as well as Amateur Radio stories every Monday thru Friday on AmiZed Studios and hosts a podcast called The Kim & Rich Show with his fiance’ Kim Dunne.

Ham Radio Rocks at 700K Strong, YO!

October 14th, 2011 |

Author: Rich KB2MOB

According to a report from the ARRL, the number of Amateur Radio operators in the U.S. has grown over the past 12 years. From 677,000 in 1999 to a new all time high of 700,000 operators in 2011 according to ARRL VEC Manager Maria Somma, AB1FM.

A chart showing the number of licensed Hams for the past 12 years. Courtesy of ARRL

“At the end of September, I saw that the number of hams in the US was high,” she said. “When I started comparing that number with other years, I found that it was an all-time high.” Over the past 40 years, the number of Hams has been growing. In December, 1971 there were 285,000 Ham Radio operators, and the numbers increased dramatically. After another decade, in 1981, 443,000 Hams in the US. That’s a little under a 50% increase. And as the decades rolled on, the number of Hams grew still.

In the report, Somma went on to say,

“When looking at the three current license classes — Technician, General and Amateur Extra — these numbers are impressive,” Somma explained. “The number of Technicians peaked in March 2011 at 342,572, while in September 2011, we saw both Generals and Extras peak at 159,861 and 125,661, respectively. As new Technicians earn their Amateur Radio licenses, and current Technician licensees move on to General and Generals upgrade to Extra, this can cause up-and-down fluctuations for these totals.”

The question then turns to how many of these licensed Hams are still active. In a recent ARRL survey of members, more than 80% of the respondents are active. That’s still an impressive number. Somma continued to say these high numbers mean that hams are upgrading and renewing in larger numbers and staying interested in hobby. “As technology changes and advances, it is especially vital to keep up or be at the forefront,” Somma said. “I believe that Amateur Radio has done just that! The measurable results are our indisputable license numbers. It amazes me after all these years how important and relevant Amateur Radio remains. I am proud to be one of the 700,221 licensees and to see this historic and important milestone.”

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JOTA from SPAAAAAAAAACE!

October 13th, 2011 |

Author: Rich KB2MOB

Fire up your sat tracking software, because the ISS will be live for Jamboree on The Air. An article at Southgate Amateur Radio Club’s website reports that Astronaut Mike Fossum, KF5AQG, will be participating in Jamboree on The Air from the International Space station this weekend, using the callsign NA1SS. Mike is also a scout master.

Photo Courtesy of NASA / Southgate ARC

While he won’t be available for every pass, you may hear him from 0800-1930 UTC as this is the usual work time for the crew, but they could also stay on a little later as well. When Mike is on he will be working ITU 1, which is Europe, Africa and Russia, with the uplink of 145.200 MHz FM and ITU regions 2 & 3, which is every one else, using the uplink of 144.49 MHz. Downlown for all will be 145.800 MHz FM. Be sure to be using a wide filter if your radio supports it, as the station uses a 5 Khz FM deviation, so 25 khz channel spacing is recommended.

If you don’t have satellite tracking software installed, you can track the Space Station online at NASA’s Spaceflight website. And, AMSAT UK has a wonderful article on getting started with satellites as well. This is should a fun Jamboree this year. To all the scouts and scout masters, enjoy!

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Handiham World for 12 October 2011

October 12th, 2011 |

Author: Patrick WA0TDA

Welcome to Handiham World.

The temptation of power!

What is it about power that makes some people crazy for it? Once they have a taste of power, they want still more.

Of course in ham radio, the idea of more power is usually associated with operating with higher power output by adding RF amplifiers. If 100 watts is good, 1,000 must be better, right?

Wrong!

What does the FCC say? It’s §97.313, Transmitter power standards. Section (a) says, “An amateur station must use the minimum transmitter power necessary to carry out the desired communications.”

There are good reasons for using lower power levels most of the time. If the other station can hear you when you are using 100 watts, you are only wasting electricity to run more power than that. We are more conscious about waste these days, since power costs are going up and the generation of that wasted power wastes resources and causes pollution. Furthermore, that unnecessary power can cause your signal to be heard on adjacent frequencies and at long distances. A high-power station can easily cause interference to other users on the band, but there is also a much greater chance of RF getting into nearby conductors where it causes bad things to happen.

I remember a Handiham member who moved into an apartment and was lucky enough to be able to have a wire antenna installed on the roof of the building. Back in those days, we were able to field volunteers to help members with such projects, and our volunteer was able to install and connect the antenna. The fellow had moved from a private single-family house where he had owned and operated a complete, well-equipped station that included a linear amplifier for the HF bands. Our volunteer explained to him that the amplifier would not be practical in the new QTH, since there was not enough real estate to get the wire antenna well away from the building. The linear was stored in a closet, and the station was tested on the air with good results.

Well, you can probably guess what happened. The station’s owner was used to operating with high power. (Remember: the thinking was, “If some is good, more is better.) So out came the linear from the closet and back into the ham shack it went. It wasn’t long before we got a call with the bad news that the poor fellow had lost his ham radio privileges at his new QTH after setting off all the fire alarms in the building. I don’t know if he was ever able to get on the air after that. It was before the days of remote base internet operation, so he was probably stuck on whatever VHF repeaters he could work from his apartment.

Adding a linear can put enough RF energy into the area surrounding your shack to affect your neighbors, too, even if you live in a detached single-family home. Devices like audio amplifiers can be connected to speakers systems in home theaters by long lengths of unshielded wire. The final output ICs in these devices can act as rectifiers to demodulate the RF and cause loud thumping noises in the speakers. Other devices that may be connected to long lengths of wire are alarm systems, intercoms, and smoke detectors. The relatively weak field from a 100 watt station might occasionally affect something in one’s own home, but is seldom a problem next door. Bump the power up to 1,000 watts and you are asking for trouble.

Another consideration is the need for an RF safety audit. Generally speaking, you don’t have too much to worry about when using the typical transceiver without an amplifier. When you increase power levels beyond that 100 watts you are going to need to “run the numbers” to make sure that you are in compliance with RF safety rules. For example, if you are using 100 watts on 29 MHz with a dipole antenna, you will be in full compliance at a distance of 25 feet from the antenna for both controlled and uncontrolled space. However, if you use 1,000 watts and the same antenna, you are out of compliance for uncontrolled space. If a neighbor’s property is within that 25 feet, you are now operating outside regulations and exceeding safe power levels. It is even worse if you have a beam antenna for 10 meters because of the antenna gain, which could increase the RF exposure even more in the uncontrolled space. It goes without saying that you want to keep RF exposure to yourself, your family, and your neighbors to safe levels. It is much easier to do this at lower power levels.

My favorite reason to stick to lower power levels is that linear amplifiers only give your transmitted signal a boost. They do nothing at all to help you receive weak signals. In fact, calling CQ with your linear turned on can lead to responses from stations that are too weak to copy. You can get more bang for your buck by installing a better antenna system. Once I learned this for myself, I have advised new hams to concentrate on good, effective antennas instead of amplifiers. After all, the antenna system will help pull in those weak signals, helping you both on receive and transmit.

There is a time and a place for turning on the amplifier. It is when band conditions are deteriorating and more power might help you complete the QSO. It might be when you are the net control station on an HF net and it is necessary to use high power to make sure that you are heard throughout the geographic area of the net. It is probably going to be helpful in the summer when there is thunderstorm static and you are operating on 75 meters. But more often than not high power is really not necessary. Let’s not use it if we don’t need it.

For Handiham World, I’m…

Patrick Tice
[email protected]
Handiham Manager

Where is The USB on Modern Rigs?

October 11th, 2011 |

Author: Rich KB2MOB

I don’t know if anyone has ever asked this question before, so I will ask. And if someone did and there is an answer, could you direct me to it. And if there isn’t, maybe someone from one of the modern Amateur Radio manufactures can answer it. Why isn’t there USB on modern rigs? What’s the catch to getting it added?

A standard USB port on a computer

I mean, with USB, you could make it much easier to setup the frequencies in the memory or the radio. It’s faster through put then serial, so you could get a lot more data from the rig. It would be a simpler setup for interfacing it by just plugging it in and making APIs available for software developers to write code that will talk to it. Apple revolutionized the MP3 and smart phone markets by making it easier to interface your devices with your computer. They’ve moved on from USB to WiFi and cloud based service now. While a modern rig is still using serial ports.

When I talked about a “Smart Rig” back when Google bought Motorola, I was hoping someone may seize in that and go to the next step. But I also understand, many companies don’t share plans for upcoming products with the public. But could you give us a hint? A small clue that something, anything is going to be available at some point? I love my FT-847, but it if used a USB interface that I could hook up to my Mac, I would be in heaven. And a USB accessible rig, makes for much less clutter. Radios are getting smaller and smaller, and adding a USB based interface or even a soundcard capable to allowing you to do APRS, PSK31, etc… is that too much to ask for?

I know there will be folks that say, “West Mountain Radio” makes interfaces, why do you need USB? Simple, I like clutter to be kept a minimum myself, and the ease of one connection to troubleshoot is also nicer. Not to say West Mountain doesn’t make great products, because they do, sans the Mac support. But think of how easy you could explain how to do a digital mode if all you said was, “Yep! I just plug it in the USB port and put in all my favorite frequencies in the radio. Then I start up the software for the mode I want to run and I’m off!” compared to, “Well, you’ll need a serial to USB interface, and drivers have to be installed, then a serial cable and make sure it’s a null modem cable too…” Have I lost anyone yet? Because I need a compass right now.

Hopefully you see where I am going with this. I would have thought after the 15+ years that USB has been around, someone would have came up with a rig with USB to interface it to your computer, giving you the tools to write your own code for your computer. Windows, Linux and Mac, not to maybe mention, Amiga or MorphOS or AROS. So I ask, why don’t modern rigs have USB ports? I’d love to hear your thoughts.

73.

Scout Troop 7 Readies for Zombie Attack During Radio Jamboree

October 10th, 2011 |

Author: Rich KB2MOB

ZOMBIES! ZOMBIES!! RUN FOR YOUR LIVES!!! That is what you will probably hear a lot of when the Zombies attack. And with Zombie attacks on the rise, Scouts are preparing for the worst this Halloween season. They’ll be working with First Responders as well as public safety communications professionals and Amateur Radio operators to earn their radio merit badges as part of scouting’s world-wide Jamboree on the Air.

Zombies as portrayed in the movie Night of the Living Dead

Photo Courtesy of Wikipedia

During the weekend of October 15th, Troop 7, from Coral Gables, Florida, will be learning about wireless communications equipment learning about all aspects starting with some of the basics and working into professional broadcasting, and also public safety. This is all for the annual Jamboree on The Air, sponsored by the Boy Scouts of America and The ARRL.

From the article at Southgate’s website:

The troop has invited local First Defenders to participate. “If there are Zombies around, we definitely think that the police and fire departments should be involved,” said Dan Deveson, an assistant scoutmaster with the troop. “We wanted to find a way that the boys could learn how the pros use their radios, and few things are so important to a 12-year-old as thwarting Zombie attacks.”
The troop will be broadcasting Zombie Action Reports around the world using amateur radio equipment provided by licensed radio operator volunteers. “In case of hurricanes, or Zombies, amateur radio operators often work with public safety professionals to provide community support. That’s exactly the sort of activity that modern scouting is all about,” said Deveson.

I gotta say, this is a pretty fun way to get the kids involved and to also have it educational. And plus, you can never tell when a freak Zombie attack could take us by surprise. So to Troop 7, I say “Well done!!” To to prepare more, I suggest watching Shaun of the Dead. There are some well thought out plans of actions in that movie should you find yourself in the middle of a group of brain hungry zombies.

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Steve Jobs: His Legacy

October 6th, 2011 |

Author: Rich KB2MOB

If you’re wondering why I am posting this instead of an Amateur Radio story, then please read the full article and you will understand. But for now, I am posting a clip and a link to my full article on the Q103Albany website, and it has already been picked up by the station I used to work at in Utica as well. Here is a clip:

I have been trying to write this story for hours now. It’s not hard to talk about someone like Steve Jobs and recite facts about him. Yes, he pioneered how we consume digital content and how we buy our digital music as well as how we use computers and much more. And while it could be considered corny by some for me to say this, he touched lives all over the world. Just look at Twitter and Facebook. One of those lives he touched, is mine.

To read the full article, check out my Tech Thursday story for today.

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Courtesy of Gawker.com