Author Archives: Thomas

Why Shortwave Radio is Still a Superior Educational Technology

PES-SouthSudan

Children in South Sudan listen to their shortwave radio (Photo: PESS/ETOW)

Reader and contributor Dr. Ed Harris recently authored an excellent article in which he describes why shortwave radio remains a practical and accessible educational technology in today’s world.

And he should know.  Ed––a long-time DXer and world traveler, currently studying to be a ham radio operator––is also a professor of educational leadership at Oklahoma State University College of Education, where he teaches courses in leadership, ethics, and research. Additionally, he oversees the Brock International Prize in Education, which discovers and awards the best ideas in education and showcases them to the world.

Ed is also an Ears To Our World advisory board member––not to mention, a good friend: we’ve travelled together on behalf of Ears To Our World to offer support with educational technologies in parts of the world where they’re needed.

Ed has kindly allowed me to post his full article here on the SWLing Post, as I believe many of you will appreciate this.


whole-earth-catalog

Using  “Whole Earth” Criteria to Explain Why Shortwave Radio is Still a Superior Educational Technology

Ed Harris, Oklahoma State University – College of Education

            As a professor of education, I see concerted efforts across the planet to increase educational opportunities for all global citizens. Governments and institutions are acknowledging that education is vital to social and economic sustainability for everyone, everywhere. For some global citizens, the convergence of the Internet with modern instructional technologies has provided advanced and rewarding educational opportunities.  However, numerous geographical regions are still plagued by educational inequities that result in social and economic disparities.

While there are no quick fixes for these inequities and disparities, the issues can be boiled-down to two interrelated factors:  (1) isolation (i.e., insulation from available and accessible services) and (2) poverty (i.e., insufficient means to procure services). Isolation is a huge problem domestically and abroad. In all parts of the world, rural is rural.  In those areas where people are geographically or politically isolated from available services, the Internet and innovative technologies actually perpetuate educational inequities and widen the digital divide between the have and have-nots.  Moreover, in many areas, the lack of money for basic electricity and Internet subscriptions compound the problem, making educational inclusion virtually impossible.

A few years ago, a colleague and I published an article regarding the above dilemmas in light of the accessibility and sustainability of modern educational technologies.[1] We explained that although we live in the 21st Century, we could benefit significantly from the criteria that “Whole Earth Catalog” used to select sustainable, user-friendly tools for their publications.

For you non-Baby Boomers, the “Whole Earth Catalog” was a collection of creative articles and durable, practical tools published from 1968 to 1972 and sporadically thereafter.[2] Whole Earth editors did not just curate tools; they curated ideas and promoted a philosophy by which to use those tools. Whole Earth technologies were timeless and provided opportunities for personal growth and social development. Before any product was included in the Catalog, it must have met a rigid set of standards:

  1. High quality at a reasonable cost,
  2. Easily accessible,
  3. Useful and relevant to independent or self education, and
  4. Capable of launching a cascade of new opportunities.

Rather than applying the above criteria specifically to radio, we applied them to a wide array of instructional technologies. However, when shortwave radio is held up to the scrutiny of Whole Earth’s standards, readers can see below that radio clearly ascends to the top of the “ed-tech” pyramid.

Standard 1: A Good Tool Offers High Quality at a Reasonable Cost

EtonRadioHigh quality and affordability are obvious factors in any discussion on sustainable technologies. Educators must consider the cost of ownership and return on investment as they seek to adopt new educational technologies. While computers and mobile devices are quite popular in today’s educational settings, their cost prohibits them being used by many across the globe. On the other hand, shortwave radio is relatively inexpensive. Low-cost shortwave receivers can be purchased in almost every part of the world.             Moreover, simple, inexpensive shortwave regenerative receivers can be easily built with a few parts. Even in the most disadvantaged parts of the world, one can find shortwave receivers, and many radios now include hand-cranked devices that provide power without batteries. To add to radio’s cost appeal, listening is absolutely free and does not require special apps or subscription fees.

Standard 2: A Good Tool is Easily Accessible

In the “Whole Earth” days, accessibility was expressed in terms of how easily the technology could be mailed or shipped. For instance, while large harvesting combines were not seen in the publications, sickles, pocketknives and books were prominent. An inaccessible tool is useless, while an accessible tool is invaluable.

Academic fields such as Educational Technology differentiate between (1) availability, which concerns how readily obtainable a technology is, and (2) accessibility, which concerns the skills one needs to successfully employ the technology in the manner intended. An example might be digital library services. Most universities make available a wealth of research materials online for anyone who has university credentials to log in to their system. However, while these materials are available, they are not necessarily accessible to users who are unable to navigate the library website, remember his or her login credentials, or have the search skills to interact efficiently with digital databases. Thus, when adopting new educational technologies, both availability and accessibility must be considered and planned for.

Earth-ClipArtRegarding the accessibility of shortwave transmissions, radio may be the most available and readily accessible technology in the world. Shortwave radio remains the only medium capable of direct communication from one country to listeners in another country without intermediaries such as satellites, cable companies, or Internet providers. Shortwave signals can be accessed anywhere on the planet, and radio is a safe way of providing information to areas of conflict or during an emergency.

Unlike most other radio communications frequencies (such as those used by FM radio, WiFi networks and Mobile Phones) which are limited to local or line-of-sight propagation, shortwave radio signals bounce off the ionosphere and blanket earth with broadcasts and information.  Every corner of the globe can receive shortwave radio broadcasts with even a simple $20 portable radio. When radio is seen as an available, accessible, and affordable educational tool, potential educational opportunities sources dramatically widen and serve to bridge the digital divide.

Standard 3: A Good Tool is Useful for Self-education

ETOW-Uganda-RadioFor educators, self-directed learning (SDL) is a top goal in the educational process. In SDL, the individual learner takes the initiative and the responsibility for what occurs and has the opportunity to choose from a range of available and appropriate resources. Thus, since opportunity and choice can empower a person to grow in his or her capacity to be self-directing, these factors should be nurtured and promoted in educational processes.

The Internet is example of a technology that nurtures self-direction and promotes both informal and formal learning opportunities. However, even the Internet does not surpass radios usefulness in self-education. Research indicates that radio is more than just music, news and entertainment. Rather, radio listening can meet educational needs such as individualized learning, belongingness, self-esteem, independent learning, and even self-actualization in a variety of different ways. Listeners can engage simply by selecting the format type that meets their requirements at any specified period of time.[3]

Moreover, radio listening is edifying because listeners hear current events and ideas from different perspectives across the world. The choices of the learner in radio listening are paramount because he or she can choose the station, choose what they want to get from the experience, and choose with whom they would like to share that experience.

Standard 4: A Good Tool Launches a Cascade of New Opportunities

Opportunity-ClipArtWhole Earth editor Kevin Kelly often reminded readers that all technologies create their own set of problems; however, superior technologies result in new opportunities and ways to solve problems.[4]  Whole Earth was at the forefront of reminding readers of the cycle of  (1) new tool, (2) new challenges, and then back to (3) new tools. In educational terms, when a learner completes a learning cycle, he or she is not only gaining personal and professional knowledge and skills, but impacting future learning as well.[5] The cyclical cascade of opportunities from shortwave radio is impressive. For example:

  • The opportunity of creative imagination and proactive listening. Radio listening feeds imagination and brings an auditory dimension to our lives. It allows for networks of mental associations, and facilitates the listener to vicariously “visit” new places and new cultures. These opportunities serve to facilitate the formation of identity, purpose, and listening skills vital to good communication.[6]
  • The opportunity of connections. Radio listening broadens connections and increases community. Radio listening helps both in making connections of desperate pieces of information and in being connected with each other and to the world. Understanding the interconnection of knowledge is vital in the learning process. Radio listeners hear different perspectives from around the world and are automatically put in the arena of connection making and discernment. Also, radio listening can be a community endeavor in itself.
  • The opportunity of inherent learning about radio. The radio is an educational device, and subjects that can be integrated in radio listening include geography, sociology, politics, mathematics, and a host of others. However, the radio device itself is instructional. Understanding electronics, circuit construction, safety, modes and systems, propagation of radio frequency signals, serving equipment, and progressing host of others.

Summary and Challenge

A good question would be, “Well, did Whole Earth Catalog include shortwave radios in their publications?” The answer is yes. In almost all their publications, radio – i.e., shortwave, amateur, electronics, books/guides, education, and/or communication – was referenced in some way. For example, on page 259 of the special 1994 publication, THE MILLENNIUM WHOLE EARTH CATALOG: Access to Tools and Ideas for the Twenty-first Century, the Sony ICF-SWIOO Receiver was showcased. In that edition, the authors commented, “No alternative yet proposed (satellite radio, personal wireless computer gizmo) offers the same combination of a cheap, portable receiver and program content that crosses borders unfiltered by any government or corporate gatekeeper.”

While technology is constantly evolving, the wisdom of Whole Earth prevails — the wisdom inherent in using technologies that promote a sustainable lifestyle. In education today, we are continually seeking innovative, timeless, and empowering technologies to promote sustained learning for all.  Just as the publishers of Whole Earth Catalog understood, educational technologies are best adopted from grassroots efforts, and those technologies adopted, must empower users to take learning, teaching and research to deeper, more meaningful levels.

The radio has been with us for a long time, is still be a superior instructional technology, and can have an important place in education. However, those of us who have this vision must collaborate to regenerate enthusiasm for this valuable medium as well as devise cost-efficient, user-friendly, and sustainable solutions. Some suggested goals could include the following:

  • Develop school broadcasts that include curriculum-based content and professional development content for educators;
  • Develop and utilize existing language learning programs aimed to teach a variety of languages;
  • Utilize interactive radio technologies that allow for asynchronous feedback and communication;
  • Develop cooperative relationships with regional governments and/or educational institutions to store and broadcast programs for broadcast to the peoples in their respective areas.

Innovative ideas, interconnections through sharing those ideas, and purposeful inclusion of technologies in today’s educational landscape echo the rationale behind Whole Earth Catalog. So in striving for sustainable tools for 21st Century education, as Whole Earth readers were reminded in every issue of the Catalog, we must seek technologies and skills that empower individuals to take ownership of their education, shape their environments, and especially, share the adventure with whoever is interested. When addressing these challenges, shortwave radio is still a viable, superior educational solution.

[1] See Susan Stanberry and Ed Harris’s Back to the future: Revisiting the “Whole Earth” concept of sustainable tools for 21st century education. Journal of Sustainability Education (2015 publication)

[2] While Whole Earth no longer prints a hard-copy version of the Catalog, one can see digital versions at http://wholeearth.com

[3] See Shannon and Brown’s article, Radio Listening as a Function of Basic Human Need: Why Did Maslow Listen to Radio?

[4] See Kelly, K. (2000). “Tools Are the Revolution,” in WHOLE EARTH CATALOG.

[5] Marra, R., Howland, J., Wedman, J., and Diggs, L. (2003). A little TLC (technology learning cycle) as a means to technology integration. TechTrends, 47(2), 15-19. Doi: 10.1007/BF02763419.

[6] See Susan Douglas’s (2004) book, Listening In: Radio and the American Imagination.


Ed Harris can be reached at [email protected] and would love to hear about your ideas of combining education and radio or advice on the ham exam.

The Worldwide Listening Guide: the content DXer’s handbook

WWLG-7th-EditionI’m very pleased to have just received the 7th edition of John Figliozzi’s Worldwide Listening Guide (WWLG), the latest, most updated version of the excellent guide I’ve often reviewed.

As I’ve said, you may want a copy of the WWLG in your shack, especially alongside your computer or Wi-Fi radio.

SWLing Post readers know that I’m a huge fan of the Word Radio TV Handbook (WRTH); it’s my go-to guide for radio frequencies and schedules. Well, Figliozzi’s Worldwide Listening Guide is my go-to for programming and content, not only helpful on the shortwaves, but also handy when tracking online content.

WWLG: The Content DXers Guide

Like many SWLs, I’m something of a “Content DXer:” I love chasing obscure programming––news, documentaries, music, and variety shows, anything the broadcasting world has to offer.  For this, I often turn to Wi-Fi radio.  Wi-Fi radio offers the discerning listener the ability to track down fascinating regional content from every corner of the globe––content never actually intended for an international audience.

But the fact is, there’s so much content out there, it’s hard to know where to start. This is where the WWLG comes in: Figliozzi exhaustively curates more than 4,000 programs (!), indexing their airing times, stations, days of broadcast, program types, frequencies, and web addresses. Additionally, he sorts the programs by genre:  arts, culture, history, music, sports, and more. And Figliozzi also includes a well-thought-out directory of at least forty genres.   In short, this directory has helped me not just locate, but identify, programming I would never have known about otherwise.

Frankly, I’m not sure how Figliozzi manages to curate such a vast assortment of programming.  But I’m happy that he does, and especially, that he offers it for the SWL’s benefit––!

Thus the WWLG  has become a permanent reference book in my shack, alongside my trusty WRTH. There’s a surprising amount of information packed into this slim, spiral-bound book…enough to keep even a seasoned DXer contented for years.

The 7th edition of Worldwide Listening Guide can be purchased here:

With a retail price under $25, I feel like the WWLG is an excellent bargain.

SWLing Post email digest via Feedburner

EmailDigest

I’ve received messages from several SWLing Post email subscribers stating that they haven’t received email digests or announcements lately.

Our email subscription has been powered by the Google company Feedburner. Feedburner used to be the best RSS-to-email subscription service out there, but over the years, Google has all but dropped the service completely.  It appears their service is either not working right now, or is working inconsistently.

I’ve stuck with Feedburner over the years because:

  1. It’s free
  2. It’s simple to use (both for me and for readers)
  3. It offers options to have either an email sent for each post or a daily digest with all posts from the day

Most daily SWLing Post readers (we’re averaging almost 6,000 on average) visit the site directly; a large number also use RSS services to follow our feed.

I’ve been searching for alternatives to Feedburner. There are quite a few out there, but most have a complicated pricing structures based on both the number of subscribers and the total amount of emails sent. We currently send at least 35,000 emails per month via Feedburner.

I will choose a paid rss service, because I don’t want emails littered with ads from the service provider.

I have a personal goal to make any change like this to the SWLing Post an upgrade in user experience, so it may take some time to find the right solution. If you’re familiar with rss-to-email services, your suggestions are most welcome!

Anyway, thanks for your patience while I explore email subscription services!

Spectres of Shortwave: near completion

SackvilleCurtainAntennas

I took this photo of the RCI Sackville curtain antennas in June, 2012. (Photo: Thomas)

Many thanks to SWLing Post contributor, Richard Langley, who shares this CBC New Brunswick article about Amanda Dawn Christie’s film, Spectres of Shortwave:

(Source: CBC)

Amanda Dawn Christie launching documentary about demise of RCI towers

Documentary ‘Spectres of Shortwave’ to be finished in time for possible premiere at Toronto’s Hot Docs

Moncton artist Amanda Dawn Christie says after six years, her documentary Spectres of Shortwave, about the demise of the Radio-Canada International towers in Sackville, is nearly complete.

“A project like this is very hard,” Christie said in an interview on Information Morning Moncton. “When I went into this project they weren’t supposed to be tearing the towers down.”

After budget cuts in 2012, CBC announced the shortwave service would end after 67 years of broadcasting around the world.

Christie calls that decision a loss for the international community.

“Shortwave communication is something that will always get through. Even though technology advances and people rely on the internet — not everyone can afford a computer or digital receiver … Canada was known for more objective, non-biased broadcasting.”

Continue reading on the CBC New Brunswick website…

The Russian Woodpecker movie: now online

woodpecker_movie-graphic

Many thanks to SWLing Post contributor, Andrea Borgnino, who tweets:

The Russian Woodpecker movie is now on Vimeo, Google Play & Itunes:

http://www.russianwoodpecker.com/

Thanks, Andrea!

It appears the movie costs $9.99 (buy) or $3.99 (rent) via Google Play, $12.99 (buy) via iTunes, and $12.99 (buy) or $4.99 (rent) via Vimeo on Demand.

Via Amazon, the movie costs $9.99 (buy) or $4.99HD/$3.99SD (rent) but, if you’re an Amazon Prime member, it’s offered as a “free” stream. If I can finish a few projects on my table, I hope to watch this tonight.

James reviews the Heathkit Explorer Jr. GR-150 TRF AM radio receiver kit

HeathkitExplorerJrMany thanks to SWLing Post contributor, James Surprenant (AB1DQ), who shares this review and photos of the new Heathkit Explorer Jr. TRF AM radio receiver kit:


 Heathkit Explorer Jr. Review

I received this Heathkit kit for Xmas from dear old Dad.

Heathkit Explorer Jr. Manual

The Explorer Jr. manual is very nicely done, spiral-bound, and very reminiscent of the old Heathkit manuals in terms of lay-out and detail.

Heathkit Explorer Jr. Retro envelope packaging

The packaging of the parts is also reminiscent of the old Heathkits with parts grouped into envelopes by phase, ie. “Active Components,” “Passive Components,” “Small Parts,” “Knobs,” etc.

The first night, I worked through completion of the circuit board attaching all electronic components and stopped at the step for winding the coil. I thought it would make sense to start fresh on that step since winding coils is generally a pain.

Even on the first night, I had a few criticisms:

  • A couple of the envelopes were ripped open when I unpacked the kit. There were nuts, bolts, spacers and an Allen wrench loose in the outer box. That said, no parts were missing.
  • I found two errors in the manual:
    1. The color code for one of the resistors was incorrect in the manual. With my aging eyes, and the miniaturization of components today, I always use an ohm meter to test all resistors before attaching them to the PCB when I build a kit.

      Incorrect color code in manual.

      Incorrect color code in manual.

    2. The circuit contains 10 resistors and all 10 were included in the kit. But one was completely missing from the step-by-step instructions. After I finished attaching all active and passive components, I had one resistor left over and fortunately there was a matching empty space on the circuit board for the same value resistor. I double and triple checked the instruction manual and I can not find where it calls for this resistor to be attached.
  • My biggest criticism so far is the fact that this kit is “solder-less.” All components are attached to the PCB with screws, lock washers and a nut. You insert the leads for each component through the over-size pass-through holes on the PCB, and bend the leads tight against the edge. Then you insert a screw in from the topside, place a lock washer on the bottom side and fasten with a bolt.
Bottom of the PCB board

Bottom of the PCB board

On the upside, the fact I didn’t need to work with a hot solder iron meant I felt comfortable building the kit at the kitchen table. (My XYL would not be pleased if she found burn marks on the table!) So I had a nicer environment to work in than the basement work bench.

Heathkit Explorer Jr. sheered off resistor leadsOn the downside, I managed to sheer off the leads on TWO resistors when tightening the screws. Fortunately I was able to replace the busted resistors from my on-hand stock.

The other odd thing about this method of attaching components is that Heathkit included a nifty screwdriver in the kit, but leaves it up to the kit builder to provide a small socket wrench or pliers to hold the nut in place while tightening the screw.

Finally, the instructions call for the kit builder to ‘bend the excess leads back and forth’ until they snap off, rather than instructing the kit builder to snip off the excess leads with nippers. That seemed really strange to me.

Heathkit Explorer Jr. Completed coil

I completed my build of the GR-150 Explorer TRF radio this past weekend. I had no difficulty winding the coil, which involved 56 turns of magnet wire around a ferite core and securing it with transparent tape.

Heathkit provided the black ties, which were too large.

Heathkit provided the black ties, which were too large.

The next problem I encountered was attaching the wound coil to the PCB. The kit came with two zip cords to use as fasteners, but the zip cords were much much too large to fit through the holes drilled in the PCB. So this required a trip to the hardware store.

You can clearly see that the holes are too small for the black cable ties.

You can clearly see that the holes are too small for the black cable ties.

Once I had the coil mounted, I encountered the problem again with the bolts and nuts shearing off the leads – this time, it took me about 4 tries to attach the thin fragile coil wires to the PCB. It’s a very fragile process that again had me wishing this was a solder kit.

Heathkit Explorer Jr. Top of PCB front

The rest of the assembly went well. The only other glitch I encountered was in assembling the cabinet, the kit came with six locking star washers for the cabinet, in fact the parts list indicates that six should have been included in the kit. But then the actual assembly called for 10 star washers.

Heathkit Explorer Jr. Top of PCB

Heathkit Explorer Jr. Nearly finished frontHeathkit Explorer Jr. Completed PCB mounted

So, how did the radio perform? About as expected. It is a single stage TRF receiver without a proper audio amplifier. The instructions say you should use earbuds to listen to the radio, but I found that my standard stereo earbuds to be off too low an impedance for while the radio worked, all stations heard were very faint – about as strong as you’d hear from a typical crystal radio kit.

Heathkit Explorer Jr. 1st run sticker

I hooked the radio up to a set of PC speakers which helped – a lot. Once I could hear the audio output, I was very pleased with the radio’s performance. The tuning cap is geared and it takes a good five turns of the tuning knob to cover the entire broadcast band. The radio was fairly sensitive and not too selective – again, as you’d expect.

So, was it worth it? For me, sure… but it depends on what you are looking for.

It’s a bit pricey for what you get, but if you want to support Heathkit as it attempts to rise from the ashes, and if you have the $$$ to ‘donate’ towards the cause, it may be worth it.

Heathkit Explorer Jr. Completed w. screwdriver

Here is my take:

The good

  • Very nice quality materials….the PCB, tuning cap, and cabinet were of a quality you don’t often see in kits.
  • Nostalgia factor–from the packing to the manuals, the kit really does capture some of the Heath nostalgia.
  • Level of detail in the step-by-step instructions.
  • Documentation. The manual ends with a very nice feature on radio theory and theory of the different stages of the TRF and how to read a schematic. It’s clearly written for a youngster as it’s complete with drawings of smiley-faced electrons moving through the components and circuits.
  • The radio does work and is a joy to tune across the dial.

The bad

  • Quality control is lacking. It’s hard to imagine a kit ever leaving Benton Harbor back in the day with such glaring errors in the manual (wrong color code, missing steps), or with the wrong size zip ties, etc.
  • Price. Even though the materials are high-end, the retail price seems a bit high.

The ugly

  • I really wish Heathkit had included either a built in audio amp circuit (there is plenty of room in the cabinet to add a simple IC-based amp), or would have marketed a separate audio amp kit. Having an amplified speaker would add a lot in terms of pleasure from the completed kit. Another kit vendor, Peebles Originals, peeblesoriginals.com, sells a nice little audio amplifier kit for use with their regen radio kits. I’ve built it, and it’s a simple straight forward kit. Heathkit could have done this and it would have made a big difference. (I think I’ll try my Peebles amp with the Explorer!)

Overall, I really enjoyed the build and I like the radio. I’m looking forward to see what the ‘new” Heathkit does next.

I applaud Heathkit for making a go at a come-back and will continue to support their efforts by buying and building their pricey stuff – yeah, I’m that guy.

73 de AB1DQ
James


James, thank you for not only sharing your experience–along with errors and omissions–but providing excellent, detailed photos. I can’t tell you how many times I’ve been confused by kit instructions and turned to Google to help me find photos and notes from other builders. Your details will help others attempting to build the Heathkit GR-150.

I hope you enjoy your new Heathkit! You’ll have to let us know how that Peebles powered speaker works with the G-150!