AmateurRadio.com

Three weeks ago my EchoLink station went deaf. Thanks to the West Central MN Amateur Radio Club’s antenna analyzer, I figured out right away that the problem was in the feedline/antenna system. Ever since then I have been either too busy or too nervous to go on the roof, so it has remained a mystery . . . until this afternoon.

Antonio Mitchell checking SWR on the Edison Fong J-Pole

Antonio, my son, went up on the roof with the antenna analyzer while I watched from the ground. He did a great job taking all the tape and coax seal off the PL-259, disconnecting the coax from the antenna, and hooking up the antenna analyzer to the antenna with a patch cord. “One point two!” he called down to me. There you have it — it was the coax! I realized what I’d done. Here I had some brand-new coax in my field-kit, but I ended up grabbing a different coil of junk coax and got bitten by a Gremlin. I found the new, already-terminated coil of coax and Antonio swapped it for the bad length, carefully wrapping the PL-259 with coax seal and rescue-tape. In short order we had the station back on the air.

All that, and Antonio doesn’t even get to use it yet. Hopefully soon! Antonio has been studying hard for his Technician exam this week. He is eager to take the test.

Thanks, Antonio, for getting the EchoLink back up and running for all of us.

I had purchased a Johnson Matchbox from an estate a while back & decided that while I was home with the flu I would open it up and check on its condition.

The Johnson Matchbox is found most commonly in two versions, the smaller “275W” unit and the larger Kilowatt Matchbox. Why did I use quotation marks around 275W? Well, these units were manufactured back in the good old days when men were men and transmitting voice meant using AM, not single side band. The conservative rating of 275W of AM translates into roughly 800W of peak SSB  (Not really but close enough so you get the idea)

Unlike many who own a Matchbox I was hoping to keep it 100% original and that it would contain all its original components, including the antenna change-over relay and wiring for the high-impedance receiver antenna connections. I plan to use this Johnson Matchbox with a Heathkit AT-1 transmitter and Hallicrafters SX-25 receiver so the inclusion of an antenna change over relay and 300 Ohm receiver connections will make life MUCH easier. Something I didn’t realize until I had the unit apart (There are a LOT of screws holding this thing together) is that there is also a receiver control contact on the relay to break HT and mute the receiver during transmit which will work with my SX-25.

An initial inspection showed that the only modification was a small piece of plastic wedged into the relay contacts that held the relay in the transmit position. It was easily removed and the relay coil and contacts tested for continuity. The contacts seem a bit dirty which, from the little I have read online, seems to be a common problem.

Once the relay contacts and band-switch are cleaned I will button the unit back up and connect it to the loop antenna I have recently run around the eaves of the house. The loop has been a huge improvement to the long-wire and magnetic antennas I have run in the past, at least as far as reception goes … but that is a topic for another post.

This morning was the monthly meeting of the West Central MN Amateur Radio Club. I joined this club about four months ago thanks to the invitation of Dean Herzberg, NYØI.

June 2, 2012 meeting of the West Central MN Amateur Radio Club. Photo taken by Antonio Mitchell.

It’s the first amateur radio club I’ve ever joined. I wish I’d joined one sooner! Certainly I wouldn’t have had to drive as far to attend club meetings while I lived in the Twin Cities. This club meets in Madison, about 45 minutes away from my house. It’s worth the drive, though. I get to put faces with call signs and catch up on local developments. Speaking selfishly, it’s already benefited me a great deal. Dean helped me mount my dual-band antenna on the roof, and he allowed me to borrow the club’s antenna analyzer, too. I hope I can return the favor somehow. That’s the sort of thing that happens in an amateur radio club.

My son, Antonio, came along this morning, hoping to take his Technician exam. Unfortunately the test-materials hadn’t arrived yet, so he was understandably disappointed. I invited the Volunteer Examiners to my house for dinner when the materials do arrive. Since my son has become adept at grilling, maybe he’ll be the one to serve them steak if they decide to make the trip.

One of the things we discussed this morning was the possibility of helping out at the airshow two weeks away here in Granite Falls. There is a gap that needs filled in their operations, namely the coordination of shuttles running between the airport and remote parking lots. It remains to be seen whether we can muster enough volunteers, but if we can it would be a great way to demonstrate our capabilities and practice working together for the day we assist in an emergency. I’m hoping we will get some more volunteers from another ARES® group nearby. It would really be neat if we had enough hams with APRS to put the shuttles on a map, but that’s a pretty tall order right now. I’ll be happy just to put one ham in each parking lot, one at the airport, and perhaps one NCS at the midpoint if we decide to use simplex. The local sheriff has a portable tower that he has offered for our use, and it might be just the thing for an NCS to use. All these details need to be worked out, but that’s exactly why these opportunities are so valuable — better to figure out how to do these things now rather than in a time of crisis.

If you aren’t a member of a local amateur radio club, I encourage you to look into one. It is well worth your while!

I’m exhausted, so I’m going to make this quick. It’s been a full day! Today our dear friend Rachel got married to Wayne, a fine fellow, in the chapel of Wycliffe College at the University of Toronto. That of course was the highlight of the day, but what is of most interest on this blog is how ham radio played a small part.

Brent Marshall, K4EMC, Todd Mitchell, NØIP, and John Marshall, KI4JQB

Our good friends, the Marshalls, are staying at the same hotel as we are. Since roaming charges are so high up here in Canada, we all have our cell phones turned off. But two of the Marshalls are hams, and they also brought along an HT. Here is a picture of Brent Marshall, K4EMC, and his son John Marshall, KI4JQB, standing with me at the end of the day’s festivities.

Before splitting up this morning, we agreed upon a simplex frequency and a repeater: the one at the top of the CN tower, VE3TWR. My wife and I went on to Wycliffe College while the Marshalls took in the town for a couple of hours. Thanks to our HT’s we stayed connected, and it’s good that we did. I radioed a subway route to them and, more importantly, passed a couple of messages back and forth between the mother of the bride and Mrs. Marshall, upon whom the harried mother was relying for help. When we were too far apart to use simplex, we used the tower repeater.

Nowadays we rely upon our cellphones so much that we forget sometimes how useful these radios can be. I brought my HT along on this trip for entertainment, but today it came in mighty handy.

No, I’m fairly sure I haven’t lost my mind … that really is the right headline.

According to a resent paper published in the American Institute of Physics, nanoscale vacuum “tubes” manufactured using conventional chip making techniques have operated at frequencies as high as .46 THz.

Dr. Meyya Meyyappan, Director at the Center for Nanotechnology at the NASA Ames Research Center, has highlighted the advantages of nanoscale vacuum devices which include resistance to hard radiation and significantly improved operating frequencies.

The increased operating frequency comes about because of the speed at which electrons travel through different materials. The speed of electron travel through silicon is comparatively slow, through graphine it is approximately 100 times faster and through a vacuum it approaches the speed of light.

While the cavity is not technically a vacuum it contains so few atoms of any other material, such as oxygen, it is functionally the same. This also gives the vacuum nanoscale device an advantage in space where hard radiation can disrupt an electron’s travel through silicon leading to errors or sometimes permanent failure.

Dr Meyyappan estimates that vacuum nanoscale components will run ten times faster than the best conventional silicon chips and who knows what advances the future will hold. Faster chips will aid in signal processing and more capable software defined radios.

Do you want to monitor every CW & PSK31 transmission on the 40M band at once? With a vacuum “tube” rig you may be able to!

This morning I once again brought my HT outside with me while I sipped my morning coffee. Don, VA3XFT, was my first contact. Don is a friendly, helpful fellow. The first time I met him was yesterday evening, when he heard me calling for Wade, VE3WGK — when Wade didn’t answer, Don called me and offered to call Wade on the telephone for me. I didn’t take him up on it then, but this morning I did take him up on his offer to call and find out more about the amateur radio station at the Ontario Science Centre. When he came back on the air he said that the station is manned every day from 1000-1400 hrs. Thanks, Don!

After another contact with Steve, VA3SF (who, like Don, operated the repeater we were using), I prepared to go to the Ontario Science Centre. My wife decided to come along, making it a grand adventure. We walked to the nearby subway terminal and soon were rumbling along. After transferring to a bus, we arrived at the Ontario Science Centre and made our way to amateur radio station VE3OSC on the fourth level.

Bill, VA3WTT, volunteering at VE3OSC

Bill, VA3WTT, was manning the station. This Scottish gentleman showed us the warmest hospitality, inviting me to come into the booth, sign the guestbook, and check in to a 2m ARES net that was in progress.

NØIP checking in to the Toronto ARES 11:00 daily 2m net

Ken, VA3KRS, was net control and gave me a warm welcome.

Bill also helped me get on 40m, where I tapped out a CQ with some Bencher paddles. For some reason the HF radio seemed deaf, so I’m not sure all was in order at the moment. But no matter! I thoroughly enjoyed seeing the station of the Ontario Science Centre Amateur Radio Club. It’s a great idea. I applaud the Ontario Science Centre for including this permanent display, and I applaud all the hams who man it every day.

Bill gave me a very nice QSL card, pictured above, and shook my hand. After saying farewell, my wife and I made our way to the OMNIMAX theater where we watched a documentary on the building of the Canadian Railroad through the Rocky Mountains. It was informative and full of amazing footage of a restored steam engine puffing through some sublimely scenic parts of Canada.

None of this would have happened had I not brought along my HT on this trip. Only because I happened to contact Wade, VE3WGK, did I learn about the station at the Ontario Science Centre. I’m glad I brought the HT, and I’m glad I met Wade and all these other fellows on the air. Maybe when I get back home I’ll even EchoLink back to Toronto and chat with them again on 2m and 70cm.

Here you can see some more photos of our trip to VE3OSC, the amateur radio station at the Ontario Science Centre.

Click to view slideshow.

The view from Chinatown, Toronto.
You’ll have to imagine the siren.

One hour after finally rolling to a stop in Toronto yesterday, I felt like I had come home. Don’t get me wrong — there are all sorts of reasons I like living in the (relatively) small town of Granite Falls, MN. The congregation I pastor loves the Lord and loves one another, and the area is a beautiful part of the country. But I grew up in the big(ger) city, and I’ve come to appreciate things that for many years I took for granted (and that most of my country friends despise).

Mountain ranges of brick, concrete, steel and glass towering over concrete valleys. Endless streams of people flowing with a rush of different accents, different languages, different colors. Magical groves of old ivy-covered buildings. Flowery fields of shops, inns, and restaurants, some native grown, but even more transplanted from the four corners of the world. Toronto is all of these and more. It’s an unusually clean city, and friendly, too.

Not that it’s a perfect place. I have no doubt that there is a seamy side to Toronto like everywhere else. And let me tell you, the traffic is the worst I’ve seen anywhere. But as horrible as the traffic is, it brings out something great in this city: pedestrians, and a spectacular profusion of small shops that cater to pedestrians.

My daughter in Chinatown.

Cities like this are the last bastion of the small businessman, because the countryside is being has been taken over by big box stores. I shop at Walmart; these people shop at mom and pop stores. The industrial revolution may have begun in the big city, but it manifested itself most fully when it ravaged the countryside. The rural area I know is infinitely more industrialized than anything I’ve seen here.

Anyhow, yesterday evening after a cookout put on by the bride’s family I programmed my HT with a bunch of repeaters in the area. This morning I enjoyed my coffee outdoors, HT in hand. “NØIP portable VE3 listening,” I called. My first contact was on the VA3SF 70cm repeater with Jay, VE3EMP, a nice fellow who welcomed me to Toronto. Then I chatted at length with Wade, VE3WGK, on the 70cm VA3XPR repeater. Wade is the CANWARN coordinator here in central Ontario, and he is also a volunteer for the Ontario Science Centre where there is an operational Amateur Radio Station on display. He encouraged me to email him about visiting this station, and so I did. I’m hoping to visit the station tomorrow, but time will tell.

Here comes the bride!

Afterward we went to Chinatown, where the bride introduced us all to a delightful Chinese bakery. Even more exotic was the taro bubble tea she introduced me to a block down the street. Amazing!

Eventually the bride and her family departed, leaving my wife, daughter and I to stroll around Chinatown.

Who knew the Great White North could be so hot?!

Whew, was it hot! I bought some painted fans for the bride, for the bridesmaids and for my wife, and my wife also got a fancy hat to keep the sun off her fair red-headed skin. My daughter picked up a silk robe and a casual dress, and I bought myself a much-needed new watchband.

Strolling through Chinatown. That guy looks like he has spent too much time at the radio!

This evening, my wife and I went for another long walk. (Did I mention all the long walks I’ve been taking here in Toronto?) We had a late supper at a magnificent little Mediterranean restaurant. I haven’t had a felafel that good since I was in Israel! I was smiling so much and complimenting the fellow behind the counter so much that he gave us some baklava, refusing to let me pay him.

Ah, Toronto!

Photographs taken by my XYL. Thanks, Monica!