Category Archives: How To

Yet another sticky radio solution

The Eton FR-300 (Source: Universal Radio)

The Eton FR-300 (Source: Universal Radio)

Many thanks to “HoustonCleanListener” who writes:

One more “sticky radio” suggestion.

Here in the Houston area we are getting in to the heart of hurricane season. I have a little Eton FR-300 radio that has am, fm, tv and weather bands, a flashing red light, a white light, and a siren. I hadn’t picked it up in some time, and, while doing a “emergency inventory” today, I picked it up and it was so STICKY!!!

Veggie-Wash-BottleThe first thing tried was rubbing alcohol, but the type suitable for first aid which is only 50% which just spread the stickiness around.

I did a “sticky radio” search and up came your blog, which I am already familiar with (no stickiness issues on my trusty Sony ICF-SW/7600GR) .

When I browsed the suggested solutions, “citrus-based” came up. Turns out I had the solution under my sink: “Veggie Wash” is a citrus-based product used to clean fruits and vegetables, and now, radios!

Squirted some on a paper towel and it does the job nicely.

Thanks for the suggestion! Like you, I imagine many others will have Veggie Wash on hand.

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Sticky radios? John shares yet another solution.

Eton-e1

Many thanks to SWLing Post contributor, John Figliozzi, who writes:

Sean at Universal Radio in Reynoldsburg, OH put me on to another terrific product that does the job fabulously and quite easily. It’s called MaxPro Ink/Adhesive Remover and is a citrus-based cleaner/solvent that won’t harm the radio’s plastic casing. You can get it on eBay for around $11 with free shipping:

Click here to view on eBay.

It took me a total of less than 3 hours to clean both my E1s. I used a lot of paper towels, working a section of the radio at a time, spraying the solvent onto the towels and then rubbing the surface free of the degraded and sticky rubberized coating. After removing the coating, I simply wiped down the radio with a wet paper towel to remove any residual solvent. They are now clean and smooth and look like new with all the white print intact. And my hands didn’t suffer any from contact with the solvent.

A reminder if you do this: It’s important to seek out citrus-based solvents and avoid petroleum based solvents. It was so easy with this product that I wished I had done this a long time ago and wasn’t so nervous about taking it on.

John Figliozzi
Halfmoon, NY

Thank you, John! I just noticed that a few of my rubber-coated receivers are starting to get tacky. I like the idea that this adhesive remover is gentle on the chassis. Click here to search eBay for MaxPro Ink/Adhesive Remover.

We’ve posted a number of solutions for sticky radios. Click here to view past posts.

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Wi-Fi Radio Primer Part 1: Radio station aggregators and alternatives

I originally wrote this three-part WiFi radio primer and review series for the April, May and June issues of The Spectrum Monitor magazine.  Each part of this series will be posted with the tag: WiFi Radio Primer. I hope you enjoy Part 1 below:


The Grace Digital Mondo

I’ve always been a hard-core shortwave radio listener.  I like the tactile experience of turning the knobs of the shortwave, tuning in stations across the globe. So when online listening became popular, it never occurred to me to engage in this new, seemingly lesser sport; I put trying it on the back burner, and continued to enjoy my shortwave. After all, I rationalized, why listen to anything other than an actual radio?

Then, at the 2012 Winter SWL Fest, an excellent presentation on the merits and technologies behind Wi-Fi radio intrigued me. I found myself downloading and installing the Pro version of the TuneIn radio app. On the twelve-hour drive back home from the Fest, I tuned to local radio stations across the world via the TuneIn app. I had to admit, it was a pretty powerful listening experience…one I could easily get used to.

And get used to it, I did.  That’s when I realized that streaming radio stations over the Internet is, essentially, content DXing. For while there isn’t any particular skill required to listen to Internet radio, it offers convenient listening opportunities I wouldn’t otherwise have, and without the rigors of travel.  For example, from my home in the southeastern US, I can listen to a station in Perth, Australia––one local to that area and one that has never been, nor is likely to be, on shortwave. I found it frankly addictive.

uneIn's iPad app has a beautiful, simple user interface. If you purchase the TuneIn Pro version ($9.99 for the iPad) banner ads disappear.

TuneIn’s iPad app has a beautiful, simple user interface. If you purchase the TuneIn Pro version ($9.99 for the iPad) banner ads disappear.

Since 2012, I’ve relied on my TuneIn app and either a tablet or smartphone to listen to stations. I found I could hook up my tablet to a portable powered speaker, an SStran AM transmitter, or even a whole-house stereo, and enjoy music from all over the world.

There was only one problem, however: while they enjoyed the music, my busy family didn’t appreciate the complexity of my radio set-up. The truth is, it did require warming up a lot of equipment––most of which is in my shack––not to mention making sure connections were in place, logging in, launching apps, and then searching for stations.  One day, referencing the cobbler’s children (who, in the old adage, go without shoes), my wife asked in exasperation, “Isn’t there some way to make listening to music around here just a little more accessible to all of us?  Maybe something we could just turn on––?”

The Quest

Thus began my quest to purchase a dedicated Wi-Fi Radio, an Internet appliance with a singular purpose:  to play online radio stations from across the globe.  Simply. 

Fortunately, I reasoned, the process of choosing such a radio was likely to be just as simple.  I mean, how hard could it be?  I was already familiar enough with the wider radio landscape to know that these radios range from about $110 to $250 in price, and that they’re widely available from a number of radio and online retailers. Moreover, I’m lucky enough to count among my friends some of the most knowledgeable experts on the topic of Wi-Fi radio––Rob De Santos, Richard Cuff, and last but not least, John Figliozzi, author of the recently updated Worldwide Listening Guide––all of whom had jointly presented at that 2012 Fest that ignited my interest in WiFi radio. No doubt, I thought, a group-email to these experts would rapidly solve our dilemma.

Boy, was I ever wrong.

My expert friends all had excellent advice, but made me aware that there’s much more involved to choosing a WiFi radio than simply selecting the best-priced or the latest model. Firstly, they advised, it’s very important to identify a good station aggregator, and then select a good radio that relies upon it.

Radio Station Aggregators

WiFi radios are Internet appliances with the ability to stream Internet content, but they’re not endowed with the ability to seek out stations in the wild and import their audio streams. WiFi radios, I soon learned, rely on “aggregators,” or online databases of curated links to radio stations.

In the early days of WiFi radio, there were several models of radios on the market that linked to proprietary aggregators, many of which eventually closed down. When a WiFi radio loses its ability to link to an aggregator, it becomes no more than a pricey paperweight, especially if the WiFi radio doesn’t have traditional AM/FM reception as a backup.

The CC WiFi uses the popular Reciva aggregator.

The CC WiFi radio uses the popular Reciva aggregator.

So not only does an aggregator need to have some longevity, it also needs to be actively curated. This means having to staff actual human beings to help manage additions, deletions, and changes to the large database of broadcasters. This is necessary because radio stations and radio networks often change their streaming server address or format with very little notice. Good aggregators have methods that allow for broadcasters and listeners to submit such changes for approval so that streaming can be fully reestablished across the network of subscribing WiFi radios.

It should be noted as well that some aggregators may not support the protocol broadcasters choose to use for their streams. So, prior to purchasing a radio, buyers should attempt an Internet search to make sure their favorite broadcasters are listed among those offered by the radio’s aggregator. This being said, buyers must be aware that a number of aggregators require a username and password to search through their listings, thus limiting any pre-purchase search.

Types of Aggregators

Aggregators fall into two categories: those that are radio-dependent, and those that are not.

Radio-dependent aggregators are those that you can use only if you own a compatible device. For example, to stream from the Reciva system, you must first own a Reciva-connected WiFi radio. With your radio model/serial number in hand, you’ll be able to create a login on the Reciva system. From there, you can create lists of favorite stations and manage them.  If you don’t own a Reciva radio, however, you can’t log into the Reciva database. The same applies to Frontier Silicon (Sangean), as well as Pure.

The dominant open (or, non radio-dependent) aggregator on the market as of this publication is TuneIn Radio. TuneIn does not require a compliant device; you can create an account with TuneIn and stream from it via your computer, tablet, or smartphone. And of course, there are now radios that link to TuneIn as their aggregator.

VTuner is another open aggregator that can be explored prior to purchasing a compatible WiFi radio. Note that in this WiFi primer we will not explore the VTuner aggregator, however it will be covered in the upcoming review of the Como Audio Solo.

Following is a list of the most popular aggregators with a brief description of each.

Radio-dependent Aggregators

Reciva (https://radios.reciva.com/)

Reciva's station search function is more functional than that of Frontier Silicon. I can typically find a station by searching by call sign. When that doesn't work--as in this case when I searched for CKUT--I simply searched by city.

Reciva’s station search function is more functional than that of Frontier Silicon. I can typically find a station by searching by call sign. When that doesn’t work–as in this case when I searched for CKUT–I simply searched by city.

[Important Update: Reciva has announced that they are closing for business on April 30, 2021. Do not buy a new or used WiFi radio that relies on the Reciva aggregator as it will not function properly without the service.]

The Reciva aggregator has been around for many years. At one point, it was the most user-friendly and most actively curated aggregator on the market. Today, Reciva is still the most popular choice in a WiFi radio aggregator.

I find the Reciva website easy to use, even if its design and user-interface are slightly outdated. Reciva also seems to be relatively quick to respond to stream-server changes. When my favorite Internet radio station changed streaming servers last year, Reciva was quick to update the link. Reciva also allows you to build folders of favorite stations that make it easy for you to navigate with your radio. Moreover, Reciva has an advanced search function that also makes finding particular stations relatively easy.

Frontier Silicon (http://www.wifiradiofrontier.com/)

Frontier Silicon's website is clean, simple and responsive. Their "My Favourites" page makes organizing your many station memories an intuitive process.

Frontier Silicon’s website is clean, simple and responsive. Their “My Favourites” page makes organizing your many station memories an intuitive process.

As far as I can tell, Sangean is the only WiFi radio manufacturer using the Frontier Silicon aggregator. The Frontier Silicon interface is very basic, but gets the job done. Adding stations to a playlist also seems to be very straightforward.

With that said, however, if you chose the option of browsing stations by category––say, by language or genre––Frontier Silicon doesn’t allow you to search within the category’s results for specificity. For example, I recently wanted to search for new French language stations in a certain town in France. Once I had chosen the French language, then the country, I was presented with a list of over 1700 stations arranged alphabetically with twenty results per page, and with no way to search among them. It was frustratingly imprecise. Not only could I not find the town, but the station list was simply too broad, too unwieldy, to navigate.

Frontier Silicon’s database of information can be incomplete––and inconsistent.  Nonetheless, there are some tricks to help you find stations; for example, an online search by call sign and name may lead you to the desired result (then searching Frontier Silicon for other station keywords). A quick Internet search can also help you find regional broadcasters.

Frontier Silicon provides an easy means by which to submit new stations and provide updated information, should your station change server locations, but one must be patient. For example, I submitted a station’s updated URL to Frontier Silicon; it took them almost a week to update the stream, whereas Reciva took only a day or so to do the same.

All in all, the Frontier Silicon platform, though more bare-bones than its competitors, does the trick and seems to work quite well.

Pure (http://www.pure.com/) (Untested)

purelogoThe manufacturer, Pure, also has their own aggregator for their radio product line. Since I didn’t test a Pure WiFi radio for this review, I haven’t tried their system. I do have two friends that tout the virtues of Pure’s radios as well as Pure’s aggregator, claiming superb customer service and overall product quality.

As Pure is a “closed” ecosystem, I suppose there could be concerns about their products should the company ever close its doors.  But the company’s strong consumer following makes this relatively unlikely. One pleased user of my acquaintance claimed that Pure is to WiFi radio what Apple is to computers––in other words, it’s a company that provides a quality product, excellent design, as well as a user-friendly interface. I can’t speak to this comparison.  But I do know that, also like Apple, Pure’s products top the market in terms of price:  their Pure Evoke F4 (without extra speaker or battery) retails for $225 – 250 US. To put this in perspective, the priciest radio I reviewed was purchased for $170.  So, clearly, Pure’s products can double the cost of their competitor’s.

Open Aggregators

TuneIn (http://tunein.com)

You don't have to own a WiFi radio to begin organizing your favorite streaming broadcasters. Simply create a free account at TuneIn Radio (http://TuneIn.com), search for and organize your favorites and changes will propagate to all of your TuneIn connected devices and apps.

Create a free account at TuneIn Radio (http://TuneIn.com), search for/organize your favorites and changes will propagate to all of your TuneIn connected devices and apps.

I have been using the TuneIn system for at least four years. It is, without doubt, the most user-friendly database of radio stations I’ve tested. TuneIn’s search functionality is exceptionally powerful; I’ve found that I can almost always locate a station in a matter of seconds. And of course, you can hone in on a favorite station by region and genre.

The TuneIn search screen.

The TuneIn search screen.

The great thing about Tunein is that you don’t have to own an Internet device to use it. You can use a free account to organize your favorite stations, which will then propagate to the TuneIn app on your phone or tablet––as well as to your web browser, should you decide to listen on your computer.

Overall, the TuneIn user interface is pleasant and responsive; in short, it’s my favorite among the aggregators I tested.

Live365_logoLive365

Live 365––an aggregator with some history, which may very well have been in existence longer than any other––specializes in Internet stations rather than radio broadcasters who also happen to stream on the Internet.

[Update] Sadly, on February 1 st , 2016, Live365 closed for business. It is unlikely another company will pick up the reigns.

Why did Live365 close shop? Here’s what Forbes.com suggests:

“It is rumored that the service is being forced into early retirement because of new royalty rates that digital radio producers now need to adhere to. Late in 2015, the Copyright Royalty Board handed down its decision about what internet radio services will need to pay per stream, and it apparently hurt Live365 so much that it can no longer afford for the rights to play music.”

Among WiFi radios, Live 365 functions as an “add on” rather than sole default aggregator. If your radio has Live 365 functionality, the loss of service will have no effect on other radio functions.

Network-Specific Aggregators and services

iHeart-Radio-LogoiHeart Radio: iHeartRadio is an Internet radio platform owned by iHeartMedia, Inc. The iHeart radio app functions as both a radio network for the 800+ iHeart radio stations around the world and also as a music recommendation system. There are no WiFi radios that use iHeart as a default aggregator, but there are several that include iHeart as a featured app.

SiriusXM (paid): SiriusXM is a satellite radio subscription service; subscribers at a certain subscription level can also stream 130 channels over the Internet.

Music and other internet radio services

Spotify-LogoThere are a number of Internet radio services that are not curated.  Many of these services are adaptive platforms that create impromptu radio “stations” based on your preferences. These services may be included with a WiFi radio, but most are used in conjunction with smartphone apps, among them, Pandora, Slacker, LastFM, Spotify, and Aupeo. Note these services are outside the scope of this review for the simple reason that, as a content DXer, my interest is on actual radio stations rather than music services.

A final note about aggregators

There are likely other aggregators and services in existence that I’ve omitted from this review. Again, I focused on the better-known aggregators and services, most of which are considered relatively stable and well-supported by both manufacturers and WiFi radio enthusiasts.

In conclusion, I’ll say once more:  it’s important to check whether a particular aggregator supports your favorite radio station(s) and broadcast network(s) prior to purchasing the adjunct radio. And if it doesn’t, you need not necessarily rule out the system altogether; often an aggregator will have the capability to add the preferred station(s), so this is also worth investigating. The obvious exceptions are stations using streaming formats not supported by your radio or your aggregator (or both). In short, do check before you buy.

I’ve been testing WiFi radios supported by Reciva, Frontier Silicon, and TuneIn, and can say that I haven’t been displeased with any of them. All seem to support my favorite stations and networks.

Alternatives to WiFi radios

The Roku 3

The Roku 3

Before we look at the WiFi radios on the market in Part 2 and 3 of this feature––coming up in the coming weeks––I should note that there are certainly cheaper alternatives to a dedicated WiFi Radio, especially if you already own a device that can play Internet radio content. By and large, smartphones, tablets, as well as PCs offer the most convenient access to online broadcast streaming, though even some TVs and video streaming devices (Roku, AppleTV, Amazon’s Fire TV Stick, Google’s Chromecast, and so forth) contain basic audio streaming apps.

Smartphones

Since the majority of us have a smartphone or tablet, you’ll find this provides a convenient and readily accessible means by which to enjoy the functionality of a portable WiFi radio.  If you haven’t already done so, the process couldn’t be easier:  simply download the TuneIn app (Android: http://bit.ly/1gB1DAh and iOS: http://apple.co/1O9aZxI).

Though TuneIn offers a monthly premium plan (primarily for those who want coverage of sporting events), even the free plan unlocks the full database of radio stations across the globe.

With the app installed, you can plug in headphones and tune in thousands of stations. If you want improved audio, simply plug in an external amplified speaker, or connect a speaker via BlueTooth.

iPodTouch-TuneIn

The app is lightweight and doesn’t rob you of much of your device’s resources. And of course, it can play in the background as you do other things.  As a bonus, TuneIn can stream thousands of podcasts––including those from the Shortwave Radio Audio Archive. There’s a curious pleasure in riding a train or subway while listening to an archived off-air recording of Radio Moscow from the 1970s!

While we’re talking about apps, there’s also an excellent one written by shortwave listener, Steven Clift, called the 1 Radio News app. At the moment, it’s only available for Android devices. There’s also a free version with some banner ads and a Pro version ($.99) with no ads and more stations.

WiFi radio?  We’re hooked

For many––myself included––this was my WiFI set-up for many years:  a smartphone and headphones, plus a tablet hooked up to a powered portable speaker. I never felt the need to have a dedicated Internet appliance for tuning radios stations…until, that is, my family needed something more, launching this investigation into the world of WiFi radio.

Now, having experienced the benefits of dedicated WiFi radio, I don’t think I’d choose to be without one. It’s just incredibly convenient to tune in a station on a simple device which has as its sole purpose streaming audio. All of the units I reviewed have excellent audio via the internal speaker, too.

Best yet, I’ve now found a radio that my entire family––yes, even my wife––enjoys. With the touch of a button or a voice command, they now tune to favorite stations in Brazil, Africa, Europe, or Canada.  And our house is now full of their music choices, too.

Coming up in the next two issues: Parts 2 and 3 which include reviews of four popular WiFi radios.

I will post each part of this three part series with the tag: WiFi Radio Primer.

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Build a cardboard stand for the Elecraft KX3

KX3-Cardboard-Stand-1

Many thanks to SWLing Post reader, Tomasz Pabich (SP7Q), who has created the following Instructable describing how to build a cardboard stand for the Elecraft KX3.

Click here to view on Instructables.

KX3-Cardboard-Stand-2

I love how practical and affordable this project is.  The stand would be simple to disassemble and take to the field in a go-bag or backpack. If it were ever damaged or lost, you could simply build another.

Of course, it would be quite easy to build similar stands for shortwave portables.

Thanks again for sharing your project, Tomasz!

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DZRP Radyo Pilipinas: advice on obtaining a QSL

dzrpI thought this little tidbit or two of information might be useful to those DX’ers seeking a QSL from DZRP Radyo Pilipinas.

DZRP broadcast in English and Filipino on several frequencies, as seen here: http://shortwaveschedule.com/index.php?station=1089

I found two email addresses listed for them, [email protected] and [email protected]  which I’ve sent reception reports too, but I can’t say either of the two QSL’s I’ve gotten from them came because of the email address. What worked?

Contacting them on Facebook!

It took a few days, but sending the reception report to them via private/inbox message on Facebook got a reply with a promise of a QSL card each time!

Find them on Facebook here: https://www.facebook.com/DZRPRadyoPilipinas/

While writing this post, I found a third email address, [email protected], which I didn’t know about before. Radyo Pilipinas posted this one on their Facebook page in reply to a DX’er asking about reception reports and QSL cards.

Paul Walker is located in Galena, Alaska and is a regular contributor to the SWLing Post. Be sure to check out Paul’s YouTube channel and SoundCloud channel where everything he logs is recorded and posted. Click here to read his other contributions on the SWLing Post.

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Video: Yaesu FT-1000MP Repair

Yesu-FT1000MP-Reapir

Remember Mr. Carlson’s excellent video of the Sony CRF-320 restoration? Many thanks to SWLing Post contributor, Ken McKenzie, who shares a link to the latest Mr. Carlson video–a Yaesu FT-1000MP repair:

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Guest Post: My Evolving, Morphing, SW Listening Station

Many thanks to SWLing Post contributor, TomL, for the following guest post:


Sony-2010

My Evolving, Morphing, SW Listening Station

by TomL, May 26, 2016

My interest in radio listening has been rekindled after a long hiatus in parallel to my dwindling interest in Mainstream Media.  It is now about 8 years without cable TV and I seriously do not miss it, especially with the evolving nature of discovery with respect to other forms of media.  SWL radio was important to me in my formative years during the Cold War; fascinating were the many ways governments used shortwave radio to influence populations, each with their own brand of propaganda!  Young people today know nothing about the endless (and entertaining) tirades of East German editorial commentaries denouncing the evil, decadent West.  Or, of the free, large-sized envelopes full of travel and promotional brochures, pennants, bumper stickers, and booklets sent from the government broadcasters such as Poland, Hungary (yes, communist countries!), Australia, Netherlands, etc. just for sending in one simple QSL report!!!

I quickly realized that those days are gone forever, consigned to a period of history where radio was THE main method of disseminating copious amounts of government propaganda to very large swaths of humanity.  Now, the internet and cable TV fulfill that function in a much more CONTROLLED manner, both technically and socially (Big Brother like).  So, I have diversified my interests and have an unusual listening station.  It is multiple things in one small space.  You see, I live in a very small condo in a noise-plagued environment with only a 2nd floor wooden deck (owned by the Condo Association!) in which to put up any outside antennas.  Only a single “Dish” type antenna is allowed.  So my shortwave antenna needs to be well hidden.  Same for the TV antenna, since I also have a north-facing deck, I cannot have any line-of-sight to the Southern sky for a Dish.

The first wire antenna strung from the top and brought inside was a dismal failure receiving nothing but noise.  I gave up for a couple of years.  I built a loop TV antenna and mounted an FM antenna instead since those were less susceptible to noise issues.  Also recently added to this station are two cheap 4G antennas with wires into a single Verizon USB aircard plugged into my computer and getting up to 14 mbps performance.

But, I still wanted to try shortwave radio again (and medium wave too) but the noise issues were very, very discouraging.  S9 noise on some bands.  Tried preselector, a noise “phaser”, different lengths.  Nothing worked.  However, I read something from an amateur radio operator in Northern California who had a space problem.  He put up a helically-wound-vertical (HWV) antenna with radials for 160 meters (John Miller HWV antenna).  I also read about various “broomstick” antennas.  So, I tried my own version with an old RF Systems Magnetic Longwire Balun I still owned and NO radials.  Put it together with a 2 foot long, 4 inch schedule 40 PVC pipe wrapped in 200 feet of 18 awg magnet wire.  Well, still noisy but, at least now I had a portable antenna!

So, I went camping in March of this year!  Holy Cow, was it cold out but the helical antenna performed well enough to hear All India Radio for my very first time, a small 1kw Mexican station in the 49 meter band, and various others from Asia that were elusive for me in the distant past.  I was finally encouraged again to continue my research.  I did this a few more times and finally got tired of going camping just to listen to a radio!  NOISE at home was still the big bugaboo to kill (and it still is).

I read up on Common-mode noise travelling on ground and shield components of antenna systems.  So I bought a bunch of toroid ferrites of different types to cover different frequencies (something about initial permeability….) to make my own homemade “Super RF Choke” to cover all frequencies made on a Home Depot Homer bucket lid, winding the coax 5 or 6 times through all the toroids, the full diameter of the lid.

Measurements by Jim Brown published on the web (RFI-Ham.pdf), pages 32-33) indicate good choke performance using coax with these larger-sized coils.  I still hoped to salvage the use of the HWV antenna.  So, added the choke and noticed some improvement across most bands (less noise).  Medium wave broadcast was not effective and decided that I did not want to keep tuning an antenna that HAD to sit outside to get away from the noise inside my listening station.

I also shut off the power to my condo and found out which noise sources were mine vs. other noise that came from all the neighbors (very important step to do!!!).  For instance, I did not know before that USB charging adapters are PURE RF-NOISE EVIL in an innocently small package?!?!?!  I rearranged wiring to shut off certain devices and power strips when I want to listen to the radio!

So, I kept reading.  Found out about another magnetic balun from Palomar.  Tried it but not impressed –  performance was too lossy compared to the good old RF Systems MLB (what a great product that was back then!).  Kept reading and found out good things about the EF-SWL from PAR electronics (product is now made and sold by LNR).  The ground connections on it (and the Palomar) intrigued me.  So, I decided to go to Hamvention for the first time, even though I was skeptical of finding anything useful, I told myself, I could at least buy the EF-SWL on sale (which I did).

Installed EF-SWL to the HWV but no difference compared to the RF MLB. The antenna did perform better outside on the deck in the far corner, so there it still sits.  Then, I hooked up the wire they gave me with the EF-SWL to the ground and it resulted in MORE noise.  Then, took off the jumper (which connects the coax shield to the ground side of the balun) and connected only the middle post (balun ground) to the ground wire and a lot LESS noise resulted along with a small reduction in radio signal level!!!  Finally some progress – the wire seems to be acting like an old-fashioned “counterpoise”, which is misunderstood these days.  Apparently, back in the 1930’s-1950’s, people involved in radio knew the differences between an “earth ground”, a “radial system”, and a “counterpoise”.  Technically, they are all different and their use is different as a result.  Now, people moosh all these concepts together interchangeably which risks creating very ineffective antennas.

Photo of installed EF-SWL at the bottom of the HWV with coax at the output, the red magnet wire input on top, the middle post for the counterpoise wire, and the coax shield post is unused. 

Photo of installed EF-SWL at the bottom of the HWV with coax at the output, the red magnet wire input on top, the middle post for the counterpoise wire, and the coax shield post is unused.

The HWV antenna now has 600 feet of 26 awg teflon wire on the outside PVC, an inside 3 inch PVC “sleeve” with 102 Russian ferrite rods, a 56 inch stainless steel whip at the top, and one inch hole through the center to accommodate the 7 foot PVC mount to my carbon fiber photo tripod when I take it camping again.

So, I am on a new quest to understand counterpoises, how to actually TUNE them and, hopefully, how to use them to increase the performance of shortened antennas like my HWV (something about reducing the dB loss incurred by shortening….).  A second result I hope will be how to use the counterpoise to keep signal-to-noise ratio high at the same time (maybe with this used $100 Dentron Super Tuner bought at Hamvention?).

Transmatch

Also bought at Hamvention (thanks Thomas W. for the tip!!) and installed Bonito’s Galvanic Antenna Isolator GI300.

If input directly to the input of the radio, led to more reduction in noise and signal!!  Too much actually, so I took off my Super RF Choke and now I had a better result compared to the EF-SWL with the RF Choke (slightly cleaner sound with less hissy noise).  Apparently, the GI300 completely isolates the coax shield, better than my homemade choke!  The requirement is to use coax from the feedpoint and not bare wire.  I then placed a few clamp-on ferrites I bought from eBay to help with slightly higher frequency choking of the shield at various places on the feedline.

Bonito-Galvanic-Isolator

Photo of GI300 on radio with NO extra coax lead into the radio at right (Thanks to Dennis Walter of Bonito for that tip)

Before Hamvention, I wanted to try out AM broadcast.  I wanted to know more about this “FSL” antenna a well-known eccentric from Ireland (Graham Maynard FSL) developed before he passed away a few years later.  So read up and bought a whole bunch of ferrite rods and tried different configurations.  Well, my particular design did not work all that well because I did not follow directions for winding wire into a balanced design.  So, I added all those ferrite rods to the 2 foot HWV (inside a 3 inch thin-walled sewer PVC pipe).  The antenna is louder down to about 3 MHz with a stronger signal (including noise) than without.  I do not have measurements, and find it too time consuming to document.  Maybe one day, I will compare and document by sliding the ferrites out on the 3 inch PVC and measure actual signal levels.  The ferrite sleeve seemed to pick up MORE noise and radio signal than without it.  So, if you need more signal strength in a small package below 7 MHz, then the idea seems to have merit.  But since it increased noise as much as radio signals, it has limited usefulness to me.  I do have another project where I will put ferrite bars onto a tuned medium wave loop antenna (Tecsun AN100) that is much more portable and directional.  The bars and loop were both relatively inexpensive from eBay.  The ferrites change the tuning lower, so I have to figure out how to make it tune higher again…….

Photo of unfinished MW loop project.

Photo of unfinished MW loop project.

Summary

Evolving understanding of dealing with major problems like overwhelming noise and limited space have led to unexpected additions to my SW Listening Station:

  • A 2 foot long, 4 inch diameter helically-wound-vertical antenna (HWV) with way too much wire on it (and now inserted with 102 160mm Russian ferrite rods on a 3 inch diameter “sleeve”). Originally built because of its portability.  Can now be mounted on a carbon fiber photo tripod with a 7 foot 3/4” PVC pipe through the center length
  • A magnetic balun from LNR (designed by Parfitt) attached at the feedpoint of the antenna
  • A proprietary galvanic isolator from Bonito attached right at the radio’s antenna terminal
  • A “boat anchor” Dentron Super Tuner attached to the HWV feedline to help tune it
  • An unfinished MW loop antenna with more ferrite bars
  • An unused, homemade toroidal Super RF Choke
  • Clamp-on ferrites everywhere in proximity on wires and power leads
  • Re-arranged power strips and wires as needed for easier shutoff in functional groups

For shortwave, I still pick up mostly noise on many bands.  With the uncalibrated S-meter on the ICF-2010 – 49 meters is around S1 (before about S3).  31 meters is MUCH improved and is now listenable to stronger stations (S2 instead of S7 noise!).  Even 19 and 16 meters is improved from S6 to S7 down to about S3 now – noise still too annoyingly loud to understand any language being spoken however.  And forget about DXing from this location!  Will have to go camping again soon.

BUT, listening now to Voice of Greece, Radio Nacional Brasilia, or Radio Romania International is a much cleaner sounding experience than just a couple of months ago.  They are there to re-discover and appreciate, even though many speak a foreign language and I do not understand a word they are saying!  Also, there is the odd observation (like just this morning), that I can actually learn to enjoy listening to Country Music if it is the unique sounding Australian flavor!!

Do I miss cable TV??  Not a bit!!

Future investigations

  • Employ the Dentron Super Tuner in various configurations to find any improvements (currently attached to the coax of main feedline from the EF-SWL, it is helping tune different SW bands (not sure why it helps, does not make sense, must be a mismatch between coax and balun)
  • Obtain old book(s) on counterpoises
  • Get a Linear DC power supply for use with all the EVIL RF-spewing devices that use 5 volts. Maybe this one:  (Tekpower 3Amp Linear)
  • Replace any cheap/old RG58 cables with LMR-240 or similar
  • Finish the AM loop w/ferrites so I can take it places
  • Perhaps an ultra low-noise outdoor amplifier for the HWV, depends on counterpoise experiments: (Wellbrook ALA100M-2)  (I don’t want to spend that much money now)
  • Somehow use a noise antenna with a better phaser: (DX Engineering NCC-1) (gulp, don’t want to spend THAT much money now also!!!)
  • Get some relief from background noise using a really robust noise blanker. I don’t want to spend on the portable radio, would rather get something like the Bonito 1102S or an ELAD model both supposed to have excellent audio quality and excellent DSP noise blankers.  But that means getting a cheap laptop to run it and replacing the Sony.  MOAR big bucks…. but not right now
  • Maybe a real loop antenna, BUT it has to be remotely tunable and remotely turnable and small enough to HIDE. MOAR big bucks, sigh….

TomL from noisy Illinois, USA



Many thanks for sharing your experiences, Tom! Also, it was great meeting you at the Hamvention this year.

I must say that there is something to be said for brute-force experimentation when it comes to mitigating radio interference. I hope you keep us posted as you continue to experiment and improve upon your unique listening system.

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