AmateurRadio.com

[Update 6/8/12: The problem was the coax. Thanks, Antonio, for getting it fixed! (click here for story).]

[Update 5/16/12: Yesterday my EchoLink radio went deaf. For some reason the SWR has soared — the problem is with the transmission line and/or the antenna. Happily the antenna has a lifetime warranty, so if that’s the problem it won’t cost me anything. The hard part is getting at it!]

Finally! My EchoLink station, in the works for a month and a half, is on the air and on the Internet. If you want to give it a whirl, go right ahead! It’s listed as NØIP-R, node 695717.

The idea for this EchoLink station sprang from the SKYWARN class I attended a month and a half ago. I was lamenting the fact that Granite Falls, the city where I live, didn’t have access to the hub-and-spoke repeater system used by the Chanhassen office of the National Weather Service (click on the map to learn more):

Granite Falls is about half-way between Madison and Redwood Falls on the left side of this map.

So I asked Dean Herzberg, NYØI, if there were any plans to connect his nearby repeater to the NWS station with EchoLink. Dean replied, “No plans, but I would surely authorize the connection. I can’t, but you could!”

Um, me? It hadn’t dawned on me that I could do this myself. But once Dean gave me the nudge, I was off and running (or at least hobbling enthusiastically). I thought, hey, I already have a Linux/Ubuntu server running 24/7, and I have an old Yaesu FT-1500M in a box — all I need is an interface and a radio.

Finished EchoLink station. Gotta tidy up those wires!

So I bought a RigBlaster Plug-n-Play USB interface from Ham Radio Outlet and a dual-band antenna off eBay from Edison Fong, hooked it all together and gave it the ol’ smoke test.

It worked! At first I just set it up on a simplex frequency and connected to the EchoLink test server, with the antenna propped up against the wall. That way I could work out a few bugs at low power and in relative privacy.

The whole thing went on the back burner for about a month due to other priorities, but finally I punched some coax through the exterior wall into my bedroom. That’s where the server has been for a couple years, so that’s where the station went (I have a very patient wife!). I terminated the coax with an SO-239 bulkhead connector mounted on a blank wall-plate. On the exterior of the wall I applied hi-tech IPORS caulking compound (Individually Packaged Orally Reconstituted Sealant, i.e. chewing gum!).

Dean Herzberg, NYØI, mounting antenna.

But I just couldn’t bring myself to mount the antenna up there on the peak of my gable. Part of it is because I’m slightly handicapped, but mostly it’s because I would rather give up my ham license than go to the edge of my roof up that high. NYØI to the rescue! I’ve written about Dean before on this blog. He’s a great guy who would give you the shirt off his back. Well, Dean came over a couple days ago and put up my antenna for me, then joined my family for lunch. He’s a MN State Trooper and I’m an ex-cop from the Twin Cities, so we had plenty in common to talk about.

I’ve had to fiddle with the settings in EchoLink to get it to work right, but it seems to finally be working great. The two hardest things to get right were decoding DTMF tones properly and keeping two repeaters from chasing their tails when EchoLinked. After finally figuring out the right DTMF settings, I nearly pulled my hair out trying to test them with my HT. Finally I realized that I was de-sensing my Yaesu FT-1500M every time I transmitted with my HT! When I went a block away, it worked fine.

Now the National Weather Service office can EchoLink directly to Dean’s repeater so that they can hear SKYWARN spotters here in Granite Falls. Alternatively we can link his repeater with the repeater in Madison, to which the NWS already EchoLinks during severe weather — all you have to do is punch in the right DTMF code, and my EchoLink station will dutifully link them up.

Now I just need to get a better smartphone so I can run that EchoLink app . . .

Here are some photos of Dean mounting my antenna and of the station itself:

Click to view slideshow.

Robert Meyer, WØLAW

When I moved out here several years ago, it didn’t take long before my phone rang with a radiogram delivered by Robert Meyer, WØLAW. He lives about a half hour away in the city of Marshall, and is the Minnesota Section Traffic Manager. Robert is a well-known traffic handler, consistently ranking at or near the top of the list for traffic handled each month in this state. He retired as chief jailer of the Lyon County Sheriff’s Office a couple years ago, hence his call sign.

I’d never met Robert in person before, but I’ve wanted to. Having heard through the grapevine that he had just had his new tower’s foundation poured, I decided to look him up last Saturday when I was in the neighborhood for my son’s classical guitar recital. Even though my son and I took him by surprise, he welcomed us warmly and gave us a tour. What a nice fellow!

Robert led us around to his backyard, a beautiful parcel of lush green grass with songbirds feeding tamely at several bird-feeders. A couple of wire antennas hung from his current tower, disappearing into some trees and a river valley beyond. The footing for his new tower, nestled up against the back of his house, was massive!

As we stood there discussing antennas and songbirds, I mentioned to Robert that I’ve always wanted to handle a radiogram but have never mustered the courage to do it. He could have laughed at me, but instead he kindly encouraged me to give it a try and then invited my son and I into his house so he could find “a few things” to help me.

You should see Robert’s shack! When you step inside the front door of his house, it’s in plain view — a most excellent man-cave adjoins his living room. Pretty soon my son and I were marveling at his equipment, stuff we might never see again except in catalogs! Delving into his well-organized file cabinet, in short order Robert came up with a couple of reference sheets and a booklet to help me handle traffic. He also tore off most of an ARRL radiogram pad and gave it to me, refusing to allow me to pay for it.
Click to view slideshow.
I’m grateful for Robert’s hospitality and generosity, not to mention his labor as Minnesota Section Traffic Manager. He represents a side of ham radio that has long been as mysterious to me as the dark side of the moon — QRO SSB NTS traffic handling. Once upon a time I wouldn’t have looked him up, but I think I’ve grown up a little since then. I’ve really come to appreciate the variety of people I meet in this hobby and the variety of activities they do.

Once upon a time my horizon was limited; if you were on HF CW I noticed you, especially if you were QRP, but I didn’t pay much attention to the rest of the ham world. I was cheating myself. I’ve loved CW, but I’m starting to like SSB and digital modes, too. I’ve loved QRP, but I’m also starting to appreciate what QRO can do (and the skill it takes to handle it). I’ve always preferred HF, but as I get to know the local hams I’m becoming surprisingly fond of VHF FM.

So I’m glad I looked up Robert, the legendary lawman — and I’m really glad he welcomed my son and I so warmly. Can you imagine getting a surprise visit from a blogger who snaps a picture of your shack for the world to see? That’s a bit much! Thanks, Robert, for being so nice to us and for being such a good sport.

Would you please help launch the Yellow Medicine County, MN Amateur Radio Emergency Services® Group? Even just a few bucks from each of my readers over at amateurradio.com (where this blog is syndicated) would be a tremendous help. I just accepted the position of Emergency Coordinator here, and I’m really starting from scratch. There are only a few active hams in our county right now (I’ll be trying to recruit more, believe me), and we’re strapped for cash. Even with sacrificial spending on our part we’re going to have trouble scraping together the approximately $500 needed to get incorporated and apply for 501(c)3 status. This status will:

• make future donations tax-deductible (helpful when trying to raise money)
• allow ARES® volunteers to deduct mileage and other expenses (helpful when trying to recruit and retain new members)
• make us eligible for grants that are otherwise unattainable

If you would like to donate, just click the button below. I’m using my wife’s PayPal account for now (once we’re incorporated, YMC ARES® will have its own account), but your donation will be tracked and every penny will go toward the YMC ARES® Group. If we reach $500, I’ll post an update right away and take down the appeal for donations in the sidebar of my blog.

Thank you so much for considering this!

I have to give credit to Gary L. Robinson, WB8ROL, for the title of this post. I met him on the air tonight using Olivia 500/16, and pretty soon I was reading his article about this mode . . . but I’m getting ahead of myself.

Olivia 500/16. Image obtained from http://www.oliviamode.com.

My introduction to Olivia took place yesterday afternoon at a meeting in a little coffee-shop in Marshall between the MN ARES® ASEC, Section 5 DEC, Lyon Co. EC, and myself (at which I accepted the position of Yellow Medicine Co. EC, but that’s another story). They explained that FLDIGI is the software they are training people on, that every Thursday evening at 8:00 P.M. there is a MN ARES® digital net on 80 meters, and that they are using Olivia 500/16 for this net.

Well, my power of recall being what it is, I’d forgotten all about it till I heard the clock chime 8:00 while I was doing the dishes (after dining on my wife’s fabulous slow-cooked chicken). “Honey,” I asked, “would you mind if I left the rest of the dishes to you? I’d like to go check out a net on the radio.” I sure am blessed with a sweet wife — she took over without batting an eye while I dashed downstairs and started hooking up my laptop to the interface while firing up FLDIGI.

Sure enough, there was the net. I “listened” (How do you say it? Read?) for nearly an hour, and finally checked in right as the net was closing.

Well, tonight before going to bed I decided to try it again. This time I went up to 20 meters where I had a nice ragchew with Gary, WB8ROL (my first “real” QSO). We hit it off right away — his career path took him from law enforcement to programming just like mine did, we both have bad backs, and we both like cats and penny-whistles — but what really got my attention was his website: www.oliviamode.com. This fellow is a veritable evangelist for this mode! If you haven’t read his QST article about Olivia, click here and enjoy “Ghost QSOs — Olivia Returns from the Noise.”

I can attest to what Gary writes about in that article. As the band began to fade, his signal dropped until I couldn’t hear it at all. All I could hear was static; I assumed I’d lost him. Not only couldn’t I hear him, I couldn’t see anything on the waterfall display. But incredibly, letter after letter appeared on the screen as Gary typed his last message!

Olivia really is “the Magic Mode!”

My son, Antonio, has reached the midpoint of his work with the Radio Shack Electronics Learning Lab I wrote about last November. Just a few days ago he finished the first of the two workbooks (click here to view PDF). I really liked the second-to-last of the labs — a “fully adjustable siren.” Here’s the schematic, followed by my son’s take on this part of his homeschooling curriculum:

The End of Book One of the Learning Lab

The last lab of book 1: a frequency meter using 555 & 4046 chips.

I have reached the end of book one. It has taken me six months to complete the book. The things that I have learned are both great and valuable. To be able to understand parts (such as resistors, capacitors, and different types of ICs) has been a great help.

It has been a real joy to have my dad help me with my projects. We both learn something new each time we do a lab. With this lab you learn how to put together circuits. You also learn to think about what the circuit is doing. Once you really start to understand the basics you are able to figure out parts of the projects without looking at the step-by-step instructions.

Grade: A!

This lab kit has so many neat and interesting projects. You get to build things like light-dark meters, adjustable sirens and so much more. By using this lab I am able to build a code oscillator and many other useful things. Anybody who wants to know more about electronics or who has never learned about them should consider getting one of these lab kits from Radio Shack. Once again let me just say that I have really enjoyed working with this lab.

When I was a boy my father paid for my membership in the ARRL, but when I got out on my own I let my membership lapse because of the cost. When I finally joined again last year, I mainly did it so I could use the outgoing QSL bureau. Since then, however, I have come to appreciate other benefits of membership. One of those benefits is full access to the QST Archives. They are a treasure-trove!

The other day while doing a little research for some blog posts that are in the hopper, on a whim I searched for “Granite Falls,” the small town where I live. Sure enough, I got a hit — from September, 1969. It’s just one photo and a caption, but it’s an eye-opener. It shows that once upon a time Amateur Radio was used in an emergency here. For sure I’ll be showing this to the Emergency Manager in our county:

September, 1969 issue of QST, p. 66. Copyright © 2012 American Radio Relay League, Inc. – All rights reserved.

Using QRZ.com I looked up the fellow on the right, WAØJRA, and sent him an email inquiring about Amateur Radio here in Granite Falls back in those days. I’m looking forward to his reply.

Have you searched the QST Archives for references to your own city? Try it!

Something old …

As a young boy in Australia my two favorite hangouts were my grandfather’s shed or practically anywhere that electronics were sold. The two largest electronic component retailers in my home town were Tandy (Radio Shack) and Dick Smith Electronics. They both sold kits, tools, ‘100 in 1 Labs’ and other assorted gear but Dick Smith eventually became known as the experimenters store due to their greater range.

Original Radio Shack calculator

If you would like to make one of these yourself then Adafruit Industries has created a PDF document you can print and cut out for create your own resistor value calculator.

The PDF file is available from Adafruit Industries or a copy is also here. Once you print it out, a little cutting and folding should produce something like the example of the right. The Adafruit design uses brass paper fasteners (remember those?) but any fastener could be used that would allow the wheel inside to rotate freely. It would be best to print on heavy card stock if you have the ability as it will give the calculator some strength.

Something new … 

If you happen to have one of those new fangled iDevices you can download Circuit Playground. It has a few more features than the old Radio Shack calculator and looks great on the iPad.

More features are being added but the list at the moment includes:

• Decipher resistor & capacitor codes with ease

• Calculate power, resistance, current, and voltage with the Ohm’s Law & Power Calc modules

• Quickly convert between decimal, hexadecimal, binary or even ASCII characters

• Calculate values for multiple resistors or capacitors in series & parallel configurations

• Store, search, and view PDF datasheets

• Access exclusive sneak peaks, deals & discounts at Adafruit Industries

You can download it from the iTunes Store or, if you have an Android, you can check out ElectroDroid for similar functionality.

As time goes on there are more and more useful utilities available for electronic experimenters on iOS and Android devices. Since more and more equipment today is becoming computerized do iOS and Android devices  represent the future of test equipment?

iMSO-104 iPad Oscilloscope