Archive for the ‘Uncategorized’ Category

Sunspots are back … and so am I

Those of you who are regular readers here know that I normally try to publish something around once every week or so. I’ve had some unplanned downtime in the past, and that’s the case with my recent 2 month absence. For the most part, I have been trying to get on the radio, but I’ve been dealing with some things for a while and I haven’t really felt up to writing. I’m going to to try to change that and get back on a somewhat regular schedule again.

The good news is that there is something to write about. As I indicated in the title of this post, solar cycle 24 finally seems to have taken hold. For weeks or even months at a time, the sunspot number had been a miserable zero. Now and then there would be a single brief spot over the past few months, but typically they wouldn’t last very long or be large enough to have any positive effect on the ionosphere. That seems to be changing, at long last.

For the past couple of weeks, the sunspot number has been in the 30-50 range. The number itself is a little confusing: as I write this, the Boulder sunspot number is 37, but that doesn’t mean that there are 37 sunspots. This explanation from spaceweather.com gives a general overview, and there are many others (ask your favorite search engine for “sunspot number), but a really simplified explanation is that the number represents both the number of groups of sunspots as well as the actual count of spots. For hams, higher is better, as it causes more ionization to occur, which in turn means that we’ve got a better “surface” to use to bounce our signals.

In addition to the sunspot number, one of the other important indicators is the solar flux index. This number had been stuck at around 69 or 70 (the minimum) for many months. Finally, it’s started to move up the scale and has been in the mid-90s for most of the week. Again, this is an indication that propagation will be good.

My recent on-air experience has shown that things have improved significantly. Increased propagation means that bands like 10m and 12m become useful. This has happened recently, and I took a look at my log to try to see just how good things have gotten.

I’ve made 8 contacts in the last two days on 12m, including working into South Africa and Nigeria. That doesn’t sound like much until you consider the following: In 2009, I had 2 contacts on 12m, and one of those was with 4U1UN, the United Nations station, which is only about 20 miles or so from me. (That was ground wave propagation, not bounced off the ionosphere.) In 2008, I had 4 contacts, 7 in 2007, 8 in 2006, and so on, I hadn’t made a significant number of contacts since 2002 and earlier on 12m.

The point is that things are finally starting to turn around. The bands are improving, and I am having a tremendous amount of fun being able to pick up some new bands for a bunch of countries again.

As I’ve told a few hams who weren’t around for solar cycle 23, You ain’t seen nothin’ yet.


The Future Of RadioSport Is 2010 ARRL Rookie Roundup

I’m speaking only for myself as one who is passionate about the game despite my station configuration. Whatever one’s resources, attitude, is not measured by the height of a tower or the output of an amplifier. Attitude instead is a matter of the heart.

I’m forever grateful that a phone call on a Pennsylvania winter’s day changed the direction of my life in a subtle but unyielding way. The ARRL Novice Roundup was in full swing while I operated a Heathkit DX-60 throwing a knife switch between it and a Heathkit HR-10 receiver.

My antenna system was a simple dipole strung between the house, a tree, and the knife switch. The phone rang that spoke to the heart of ham radio spirit. I was invited to operate a dream shack as a 16-year old who recently discovered the thrill of RadioSport.

I threw on my winter jacket and walked a country mile without a second thought.

The objective of the ARRL Rookie Roundup as an entry level event is RadioSport cause number one at all levels from clubs to individuals. It is clear, “Experienced operators are strongly encouraged to participate and help new operators – either on the air or in person.

Furthermore it is stated, “For newly-licensed operators in North America (including territories and possessions) to experience competitive Amateur Radio…

It is a rally call for active involvement in the execution and success of the ARRL Rookie Roundup at all levels. The long view value of this event cannot be underestimated or dismissed. However trying to please everyone, everywhere leads to not pleasing anyone, anywhere. Subsequently, real-time logging is a long awaited RadioSport innovation because Internet cloud service and storage is the future; right now.

Those organizations getting there first will own the high ground.

I do not agree with eliminating the Best of the Best while awarding everyone a certificate of participation. I participate because I want to and I compete because that is who I am. One does not need a certificate to participate although one needs recognition for their effort, commitment of resources, energy, and time.

I submit for consideration, if the Roundup is a group effort, incorporate club competition into the model wherein individual effort contributes to a Roundup Cup much like the coveted Sweepstakes’ gavel, and its historical competition between the Potomac Valley Radio Club and the Northern California Contest Club.

There is a need for a little more skin in this game.

I can vividly see the dream shack nearly 30-years later where I sat in front of a Drake TR-7 pumping radio frequency into a 4-element 40m monobander while penciling nearly 600 contacts into the log. His phone call changed the trajectory of my life that is the future of RadioSport is the 2010 ARRL Roookie Roundup.

73 from the shackadelic on the beach.

Wooden Tower Plans


The Pacific Northwest Region Forest Service has this neat collection of wooden fire tower plans available on their website. The various plans are from 1936 to 1965 and are provided for historic reference. While as the website mentions they do not meet current building codes, I've often dreamed about building one of these and using it for a station tower and perhaps having a hamshack up in the tower cab. Maybe someday when I have a ten acre wooded lot and a lot of time on my hands...and lots of life insurance.... :-)

Thanks the Pacific Northwest Region Forest Service for preserving these documents and posting them online.

Radio Amateur Volunteers to Save LORAN

Earlier this week President Obama announced that the aging LORAN navigation system would be deactivated, saving the U.S. $190 million over the next five years. Radio amateurs were vocal in their opposition to the deactivation, claiming that the antiquated system was a good backup if GPS failed.

This morning President Obama reversed the decision, calling upon amateur radio volunteers to assist in the situation. "Today we ask radio amateurs, also known as 'hams' to help save the LORAN system. Hams came to the aid of their country in World War II, providing over 30,000 radio operators. Today we are asking for 500 amateur radio volunteers to run the system over the next five years."

Details were sketchy at the press conference, however a press release later in the day stated that volunteers would receive only room and board in LORAN station facilities, and the program would save a half billion dollars over the next 20 years. FCC Chairman Julius Genachowski applauded the decision noting that radio hams are known for their technical astuteness with antiquated systems and World War II technology, and were likely the best qualified to keep the obsolete system running for decades to come.

Senate Republicans who several days ago were critical of the administration for making a "foolish decision" to deactivate LORAN which would "compromise national security" released a statement in response to today's reversal calling the decision to keep LORAN running "another example of reckless spending that will increase the deficit and threaten freedom", vowing to block all attempts to keep the system running.

ARRL officials were excited over the decision, announcing that all hams who volunteered at the LORAN stations could append a /L to their callsigns, in celebration of the saving of the LORAN network.

Reaction to the program to save LORAN on amateur radio forums and on the air was mixed with many questioning whether CW proficiency would be required of volunteers in order to insure that only technically qualified individuals would be operating the LORAN transmitters.

Walmart Closeout Rechargeable Batteries

A few days ago I found these rechargeable sealed lead acid lantern batteries from Remington for $5 each (normally $9.47) in the sporting goods section at Wally World.





They're each 6V 4.6 Ah, and (obviously) make 12V if used in series. They should make good backpacking batteries. I didn't really need anymore batteries, but it seemed like a good deal. I'm not sure if all Walmarts have these on closeout, but you may want to check your local store if you're needing some rechargeables for outdoor expeditions.

Homemade Alcohol Stoves for Outdoor Radio Artisans

I've been experimenting with homemade lightweight alcohol stoves, in particular this design called the Penny Stove. These are so cheap and easy to make, yet amazingly effective. All you need to make the main burner part is two soda cans. To make the pot support I used the bottom of a coffee can and some spouting screen, and I used aluminum flashing to make a windscreen. The fuel is denatured alcohol you get at the hardware store, but you can use about any high proof alcohol like grain (yeah, the stuff you drank in college that made you deathly ill) or your local neighborhood moonshine. (Note that denatured alcohol is poisonous. As with any household chemical, keep it away from children and animals.)




Here's the burner and the bottom pre-heating thingy. About a half teaspoon of alcohol is first poured into the pre-heating part on the bottom. Then the top part is inserted into the bottom and about one or two teaspoons of alcohol is poured into the center hole in the burner.




Here's the assembled unit with the penny on top. The penny acts like a regulator and will tilt up and release the pressure inside if it gets too high.



The burner inside the pot support.




The stove heating a cup of water for a late evening cup of tea.



What the flames look like in the dark.....

I haven't given exact directions on how to construct this as you can go to the Penny Alcohol Stove website and get that. The website seems to insist on a particular size can and some other very specific items. However, I found that the design parameters aren't too critical and it's fun to just build many prototypes and see what works the best. Just be sure to do your testing outside in a safe area and wear appropriate eye protection and take the necessary safety precautions. Take this lightweight little stove on your outdoor radio adventures instead of the typical larger stove and you'll have more backpack space for a linear amp or beverages. Have fun!

(Common sense isn't a requirement for an amateur radio license. As always, if you kill or maim yourself or others experimenting with this stove, it's your own darn fault. Standard disclaimers apply.)

Underground Radio

On NPR this morning I read this article entitled Texting Underground Can Save Lives and Caves . Sixteen year old Alexander Kendrick won the 2009 International Science Fair for inventing an extremely low frequency cave texting device. It's described as something like a "computer attached to a ham radio", transmitting data using low-frequency radio waves that can penetrate rock more easily than high-frequency transmissions like those in FM broadcasts.

Unfortunately it doesn't appear Alexander is an amateur radio operator as I couldn't find a license database entry. I'm curious as to the modulation he is using; this would be an ideal application for PSK and one could use existing amateur radio software.

Kudos to Alexander (PSSSST! You can connect a computer to a ham radio! Email me! :-)



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  • Matt W1MST, Managing Editor