Tuesday, October 20, 2009

Ham webinars

Earlier today I ran across a reference to webinars on ham radio subjects presented by the Potomac Valley Radio Club (www.pvrc.org). At the top of the page there is a link labelled PVRC Webinars. Click on that and it will take you to another site with several (currently 7) webinars. I partly watched and mostly listened to three of the presentations. I was impressed by the expertise and knowledge of the presenters, and learned some things I did not know. The three I watched were:
  • Cycle 24... and more by Carl Luetzelschwab, K9LA
  • Welcome to contest antennas: DX or domestic. What's your pleasure by Dean Straw, N6BV
  • When giants first walked the bands; the early days of multi-multi by Doug Zweibel, KR2Q

The first presentation gave me just enough information to encourage me to learn more. There is a related presentation that will be available soon. Dean Straw demystified some aspects of antenna arrays, but I doubt I will ever have the real estate to create some of the large antennas he discussed. The third presentation was a history lesson on large contest stations from the 60's to mid-80's. Interesting photos and the speaker knew many of the folks shown personally.

The webinar idea intrigues me, and I plan to explore ways that our club might consider doing something like this. Technically it should be feasible, but whether there are folks who could pull it off is another topic.

Keep learning.

Friday, September 18, 2009

Northwest ham populations



The ham radio ranks continue growing in the Northwest. Over the past several months I've analyzed the number of ham licensees as the basis for a class project in school. I found the analysis both interesting and challenging.





The ham population roughly tracks the general population in the Northwest (defined and Oregon and Washington for this purpose), although there are anomalous pockets.


The map above shows the high ham concentration in three Puget Sound counties. The Portland metro area and Spokane also have high ham numbers. Two counties in SE Washington and three in North Central Oregon have very low numbers. These counties might be places to operate during state QSO parties or during county hunter activities. I expect quite a few folks would appreciate a few stations operating from those counties.








I found the map below much more interesting. The map shows the number of hams per thousand in the general population (based on the 2008 US Census county estimates). On the low end, many counties with low ham numbers also have low numbers per thousand. This may simply be the result of few hams who talk about their hobby, so few folks in the county get interested.

On the other side, the coastal counties of NW Washington and NW Oregon stand out. I know several clubs along the coast actively seek out hams for emergency communications, and local newspapers wrote several stories on ways hams helped their communities during storms.


Both Oregon and Washington have some of the highest ham population growth over the past several year, surpassed only by Utah, Idaho, and Nevada.

DX serendipity

On my home from the Ham Basics workshop (see previous post), I turned on the radio in my car to see what stations might be on the air. I was pleasantly surprised to hear several European stations booming in. To say this is rare for my mobile station would be an understatement! I had heard a Finnish station once before a year or more ago, but none others.

I've also learned that my chances of working a weak station from my car (I have a hamstick mounted near the trunk with a line tuner between the antenna and radio) approach nil. Since the station was loud enough, I called DL7MEV (he was in a contest) and he even answered back. I now have exactly ONE European contact from Germany near the Austrian border.

Since that time, I have not heard any stations more distant than Texas and Minnesota (about 1500 miles). That magic of radio continues....

Postscript: I uploaded my German contact into Logbook of the World, and he verified the contact a couple of days later. I assume he needed some rest after a 48-hour contest. Now my trail towards DXCC advances to 14. Just for comparison, several of my friends have contacts with 337 countries verified, so I have a ways to go.

Ham Basics Workshop


Last weekend our radio club held a workshop entitled "Ham Basics" with the concept to teach beginning principles on a variety of ham radio subjects. I did most of the planning and prep work behind the scenes, but asked for help with publicity and logistics for the building. In all, we had nine instructors who taught 13 classes: one general session (45-minutes) and 12 50-minute classes. We all met together for the general session, then separated into four classrooms where the other classes were held. I am grateful for the willingness of the instructors to prepare material and teach to the attendees.


We started at 9 AM in a large hall with about 80 attendees who watched several of us solve a projector problem early in my session. Most attendees were licensed hams, but there were some who came to "kick the tires" and learn a bit about the hobby. Many of the presentation outlines are available at http://www.w7aia.org/class.htm in case you are interested in the subjects. [Note: the workshop web page is not well-organized yet, but hopefully I can negotiate with the webmaster to improve it.] The slide that shows how few hams reside in some counties surprised many folks; the large ham population in the Puget Sound area and in the Portland metro area should not surprise anyone.
After the general session, attendees were able to choose from four classes. During the first class session, we offered "How to get the most from your handheld", "Simple VHF/UHF antennas", "Communications during an Emergency", and "Getting started with HF".
During the second class period, we offered "Operating mobile and portable", "Connectors and grounding", "Digital communications", and "Simple HF antennas".
During the third period, we offered "Station types from handheld to HF", "Contesting", "Using your radio for public service", and "Care and feeding of batteries".
In all, we had between 85 and 100 folks attend for all or part of the workshop. Attendees ranged from unlicensed to extra, although I think most attendees held either technician or general licenses. We received numerous thanks for the session, enough to seriously consider doing it again next year. I learned from preparing the classes, and sitting in on one class.

Wednesday, August 12, 2009

Ham Basics workshop planning

A few months back a friend and I were discussing some ways to help new hams get on the air with more confidence. Many of our past students needed just a "little bit more" help to get their radios set up properly for their first contact. After some thought, we came up with the idea of a four-hour workshop on a Saturday that would provide several short classes for folks.

Initially I thought we should have four class sessions, but several friends kept mentioning some things they thought everyone should hear. So, I changed my thinking with a general session (sometimes called a plenary session) at the beginning followed by three class periods of 50 minutes each. Since hams by nature are a rather gregarious group, the plan included 10 minutes between classes with a longer time between the second and third class session for a short break.

Then I started brainstorming to come up with at least a dozen class titles that sounded interesting. When I started showing the list around, I got more suggestions (very helpful) and some volunteers to teach one or more sessions. The classes tend to focus on areas that cause beginners to stumble. Hopefully the classes will trim the hurdle heights somewhat. The classes on the program so far include in no particular order:
  • How to get the most from your handheld radio.
  • Connectors and grounding.
  • Simple VHF/UHF antennas.
  • Simple HF antennas.
  • Getting started with HF radio.
  • Station types from handheld to HF.
  • Operating mobile and portable.
  • Operating in a contest.
  • Care and feeding of batteries.
  • Using your radio for public service.
  • Digital communications.
  • Communications during an emergency.

To date I have instructors for all but three classes. I hope to hear a positive answer from a potential instructor on one of those classes soon, so I have two more instructors to find.

A session like this would not be possible without a decent-sized venue. I gained permission to use a large church meetinghouse with rooms that can accommodate the general session and the classes. I think we could have up to 75 or so in some classes, depending on how many folks are interested in the program. The facility allows us to charge nothing for the event. Frugal (and sometimes cheap) hams should like that cost!

I am grateful for ten instructors so far agreeing to present one or more classes to help hams learn more about the hobby. The event will occur next month, and I plan to write about the results. My goal is to provide learning opportunities for new and experienced hams so we get better together.

During the general session, I plan to cover general principles for good electronic communication. I also plan to show where hams fit in the Incident Command System (ICS), mention good repeater protocol, a reminder about only using frequencies authorized to each licensee, family emergency communications plans (you have one, right?), and some related topics.

Once the publicity goes out later this week to the all and sundry, we will see how many folks are interested. Publicity for events like this are crucial for success. Fortunately a friend from our radio club will handle that part, and she manages to reach many people. For an event last year, our antenna seminar publicity reached the deep south from way up here in the northwest.

May you always be prepared for the unexpected, and enjoy the journey.

Saturday, July 25, 2009

Backyard Portable


A friend loaned me his SuperAntennas MP1 portable vertical to try out. My week did not go quite as planned (do they ever?), so it was Saturday before I gave it a try. My friend also loaned me a 35 amp-hour battery pack. I recently rehung my G5RV antenna across the house, so thought I would try both antennas during the IOTA contest on battery power.

I toted the battery, radio, antenna switch, coax, and the MP1 to the picnic table and started setting up my station. First, I attached more coax between the G5RV and the antenna switch. Then I connected the antenna switch to the radio with a short piece of coax. For the power, Anderson PowerPoles sure make painless and quick connections. A satisfying "click" and then atmospheric noise indicated the battery had juice and the radio detected same.

Then I read the one page instruction for the MP1. The instructions are adequate for the antenna. I screwed the two rods to the base, attached the whip to the tuning coil, then screwed the coil to the rods. I set the base edge under the battery on the assumption the heavy battery would keep the MP1 vertical, and spread out the four counterpoise radial wires. After I connected the coax, it was ready to test.

I found that the MP1 heard many stations that I could not hear on the G5RV. The G5RV heard more static than the MP1. I heard several loud stations including VC8B on Baker Island in northern Canada (unfortunately he did not hear me), W6AFA in Los Angeles, and a few other stations. No one I called heard me, so Idid not receive any signal reports.

I listened and called for a while, then decided to do other things. After I dismantled the station, I started wondering if the G5RV is still working. That is an open question.

A few things I learned from the short experience:


  • Set-up went quickly when the necessary parts are close at hand.


  • Battery-powered operation has some benefits, such as no AC power cord and power supply to handle. This allows operation most anywhere so long as the battery has adequate juice.


  • The MP1 has potential, as yet unrealized. I think another portable antenna type may meet my operating methods better than the MP1, but I need to try it again.


  • Operating outside on a pleasant warm day is much more interesting than operating from my normal shack.
I have hopes to operate portable again. Perhaps I can find an island to activate one of these days.

Sunday, June 7, 2009

SeaPac 2009 in Seaside

My wife and I drove from home to Seaside, Oregon for the 2009 ARRL NW Division conference. the drive west through the forests in Tillamook Burn towards the coastal gray sky reminded us both of our time at school some years ago. Once at Seaside, I headed to the Convention Center for a two hour security assignment. That was the time vendors and fleamarketeers set up their tables. The hall looked like a beehive.... After my shift, we went hunting for geocaches in the area.

On Saturday, I walked the dozen or so blocks from our lodging to the Convention Center. I talked with several other hams in the lobby while waiting for the doors to open at 9 AM. Promptly at 9, security removed the barrier and the crowd surged into the hall. I took a side trip to visit with the OR and WA frequency coordination group leaders. I gained a better appreciation for the role of frequency coordination, and found them willing to consider reasonable proposals. I would like to see more simplex frequencies available in the metro area for use during emergencies, but most repeater owners (who make up the repeater council) want more, not less, repeater frequencies. I plan to send a firm proposal later this week.

Next I headed upstairs for my talk on ham training. In my talk, I started off with seven maps that show ham demographics in the US. California has the most hams, but their ham population declined by over 12,000 in the past decade. Washington state has the second highest hams per thousand in the general population behind Alaska. Ham populations in many states declined, while the ham population in the NW increased over the past decade. The western states have a higher proportion of female hams than most other states. At the current growth rate ,Washington should attain the fifth highest ham population in the US. We continue to increase ham numbers while other areas are in decline.

After the demographics, I suggested methods for effectively teaching ham classes. We had some good discussion on teaching methods. The had about 60 seats and about 3/4 were occupied, which is more than triple than last year. I plan to polish the discussion and submit an article to QST.

After my talk, I visited nearly every commercial booth to check out their wares. The new Icom HF radios (http://www.icomamerica.com/) look quite interesting but spendy. Maybe my interests and bank account will converge one of these days. Ham Radio Outlet (http://www.hamradio.com/) sold quite a few new radios; a friend bought an Icom 7000 (nice radio), and another friend bought a Yaesu FT-8900 quad band FM radio. I think both of my friends will be happy with their choices. One of these days I may sell one of my radios and trade up.

The Buddipole antennas (http://www.buddipole.com/) look like something I want to try later this year. The portablility and flexibility in the Buddipole Deluxe Package would suit my interests in portable operations. I bought two of their standard telescopic whips (http://www.buddipole.com/stainsteelte.html) for use as a six meter antenna during the ARRL VHF QSO party (www.arrl.org/contests/rules/2009/june-vhf.html) next weekend. I already have the duplex connector that I use with hamsticks to make an HF dipole.

I also looked closely at the yagi in a bag offered by SuperAntennas (http://www.superantennas.com/). I like the concept and flexibility (they even offer a rotator), and will need to consider this one later.

One other item I purchased was a teflon disk that should protect the roof paint of my car from the magnetic antenna mount. I hope that eliminates the chance of rust rings and direct wear on the paint.

If you have the chance to attend one of the ARRL conventions, the talks and vendor displays are usually well worth the price of admission. I came away with some new ideas.