Monthly Archives: July 2016

Saying Goodbye to Lou Josephs

Lou Josephs (Photo: Jonathan Marks)

Lou Josephs (Photo: Jonathan Marks)

It is with sadness we pass along this message from Jonathan Marks concerning Lou Josephs:

I am afraid Lou passed away Sunday morning. But his wife Susan would like to pass on the thanks to those people who sent him best wishes via SWLing.com and shared memories with him. He heard them and perked up. 

Picked some clips from the archive and added tributes from Vasily and Jim. 

http://criticaldistance.blogspot.nl/2016/07/lou-josephs-media-visionary-and-great.html

Jonathan Marks

Our thoughts and prayers go out to his family and all who loved and admired Lou ~

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Night of Nights XVI: July 12, 2016

Chief Operator Richard Dillman at Position 1 (Source: Maritime Radio Historical Society)

Chief Operator Richard Dillman at Position 1 (Source: Maritime Radio Historical Society)

Update: Please read Brian’s update regarding frequencies.

SWLing Post contributor, Brian D. Smith, writes:

“Thought I’d forward you this information on the annual “Night of Nights” event on July 12 (U.S. local time)/July 13 UTC, which provides an opportunity for shortwave QSLs – assuming the listener understands Morse code!

I’m sure you’re familiar with this one-night-a-year happening, in which maritime radio stations rise from the dead and transmit Morse code messages again for a few hours.

As a guy who honed his CW sending skills by listening to these stations’ constantly repeating messages, I have a sense of nostalgia and gratitude toward these stations, which helped me obtain my first Novice license, WN9ICB, at the age of 15 … less than 2 months after I taped the WWV recording that I submitted.”

Many thanks for the notice and sharing your nostalgia! Brian also forwarded an announcement from the Maritime Radio Historical Society of America. The MRHS describe the event:

It’s that time of year again. Time to honor all those ops who came before us by preserving their skills, traditions and culture through on the air operations.

Why 12 July? Long time True Believers know the story. But it may be worth repeating for new arrivals and to remind everyone of the traditions we hope to keep alive.

On 12 July 1999 some very tough looking grizzled old radio pioneers had tears in their eyes as the last commercial Morse code radiogram was sent. It was the end of an era. And as the last beeps faded away into the static they witnessed the end of the career to which they had devoted their lives.

These men – and some women – had stood watch over the airwaves on shore and at sea. Theirs was mostly the business of maritime commerce. But when their ship was in peril they were called upon to send the most electrifying three letters in radio, S O S, knowing that all their fellow radio operators would press their earphones close to get every scrap of information and bring aid to their stricken ship.

Once, our coasts were dotted with great Morse code radio stations, all communicating with ships at sea. They’re all gone now… all except one, the one they called the Wireless Giant of the Pacific, located at Point Reyes.

On that sad day in 1999 another event took place. The Maritime Radio Historical Society (MRHS) was formed. We made it our life’s work to honor the men and women of wireless by restoring that wireless giant. One year and one minute later the giant’s voice once again spanned the oceas as we picked up the thread and kept the faith with our colleagues of the air.

Every year since, in an event that became known as the Night of Nights, Morse code station KPH has returned to the air, joined by KFS and the station of the MRHS, KSM.

This year our friends and colleagues at USCG station NMC have labored mightily to bring that storied call sign back to life on Morse code for the evening along with NMQ in Cambria, CA..

And station NMW in Astoria, OR will be on the air as well.

Stations WLO and KLB will join us again as hey have in years past.

This is a global and local event. Hundreds of listeners around the world will be waiting with their earphones on, waiting for the signals of the great station to once again arc over the dome of the Earth to their receivers.

You can be with us in person!

The frequencies for this event are numerous! I have listed the USCG (NMC) frequencies below, but please check the MHRS newsletter for MRHS and other maritime station frequencies.

Again, Brian, thanks for the heads-up!

Happy listening, everyone!


NMC (Transmit Bolinas, Receive Pt. Reyes)

Frequency            Transmitter                         Antenna

472.0                    Nautel ND2500TT/6           173′ monopole tower
500.0                    Nautel ND2500TT/6           173′ monopole tower
6383.0                  Rockwell-Collins RT-2200  Omni-directional
8574.0                  Rockwell-Collins RT-2200  Omni-directional
17220.5                Rockwell-Collins RT-2200  Omni-directional

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“Mystery” reel-to-reel tape of shortwave radio broadcasts

Reel-to-reel

Several weeks ago, an SWLing Post reader (sorry–I’m missing your name in my notes!) sent me the following YouTube video. The video is essentially a review of the Pioneer RT-707 reel-to-reel tape deck. The reviewer is using a “mystery” tape of shortwave radio broadcasts in the deck.

You’ll recognize a number of broadcasters in his audio clips:

Click here to view on YouTube.

I’ve actually asked this YouTube reviewer if he would digitize the tape so that I could add it to the shortwave archive. I love lost and found recordings like this.

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A review of the BST-1 car shortwave radio

BST1 FM1

The following article originally appeared in the June 2016 issue of The Spectrum Monitor Magazine.


The BST-1 receiver.

The BST-1 receiver.

Last year, I was approached by die-hard shortwave radio listener Fred Studenberg, who had an idea that at first seemed outmoded, but soon had me intrigued: he wanted to design and build a car radio. Well, a car shortwave radio.

Studenberg described his ideal car receiver. It seems he’d abandoned the idea of making a radio along the lines of a Sony, for example, that takes the place of an existing car radio. Rather, Studenberg, with singular purpose, envisioned something quite unique: a little black box shortwave that could be easily installed in the back of a vehicle, transmitting audio from the shortwave receiver to the car’s system via an FM transmitter link. One would tune the car radio to an FM frequency––say, to 88.5––and listen to the shortwave receiver which would be located at a convenient location, near the mobile antenna, somewhere in the car (in the trunk, under a seat, etc.).

I was doubtful…and for good reason. To begin with, I’ve never used an effective audio FM transmitter link in a vehicle. They’re all rather mediocre, and usually inject noise––or, are simply too weak to be effective. Secondly, I imagined it would be frustrating to remotely operate a little black box stashed in the trunk of your car without some form of display feedback at hand, showing frequencies and so forth. Plus, I concluded, wouldn’t it be a pain to install? And how would you control such a shortwave receiver? To top it off, I just couldn’t imagine such a system coping with the RF-noisy environment of an car. The more I thought about it, the less feasible it seemed. I hated to disappoint Fred with my concerns.

I needn’t have worried. Thing was, Studenberg had already developed said car shortwave radio, and even had a video of it being used in his own car:

And this video silenced my concerns: remarkably, it appeared Studenberg had managed to overcome each of my doubts. I was impressed, and interested.

All Studenberg wanted to know was, might any other SWLs benefit from such a device?

I thought of all the commuters and frequent travelers out there, with a penchant for shortwave and a shortage of time in which to enjoy it. Are you kidding? I thought. What SWLers wouldn’t give to turn a tedious traffic jam into a shortwave jam session?

Fast-forward to this year, when Studenberg put his BST-1 on the open market. And in late February, he kindly sent me a loaner BST-1 to evaluate.

Installation

As many regular readers know, this has been a particularly busy winter and spring for me, so I had to delay installing the BST-1 in my car. I was sure it would require dedicated time and likely a bit of troubleshooting to get the shortwave working as intended.

But recently I finally had a moment to install the BST-1. And I quickly I realized that, yet again, I had been fretting over nothing. My Toyota minivan was actually well-suited to installation of the BST-1, since it has a hinged hatchback door, a dedicated 12VDC plug in the rear, and even a small niche in which to tuck the BST-1.

The BST-1 is also supplied with a 12VDC cigarette lighter plug. If you have a minivan or SUV with an auxiliary DC port, powering the BST-1 will require no tools.

The BST-1 is also supplied with a 12VDC cigarette lighter plug. If you have a minivan or SUV with an auxiliary DC port, powering the BST-1 will require no tools.

The radio’s proud papa also sent a Model CBST-1 mobile shortwave whip antenna with the BST-1. The antenna came with the steel whip and base, a trunk lip mount, and antenna feed line terminated with the appropriate connector. [Note: this whip is surprisingly short!]

The supplied shortwave radio steel antenna whip is short and effective. It should mount on most vehicles with little problem.

The supplied shortwave radio steel antenna whip is short and effective. It should mount on most vehicles with little problem.

Admittedly, my minivan’s hinged door doesn’t work perfectly with lip-mounted brackets—but after some trial and error, I found just the place to mount it where the door wouldn’t damage the base of the antenna. The feed line was easily long enough to cover the span from the top of the door to the receiver.

As for the receiver, it really was a cinch to install: I simply connected the antenna feed line, plugged in the supplied 12 VDC power cord (note that, alternately, there are also twelve VDC pigtails that can also be used) and placed the BST-1 in the back pocket compartment of the minivan.

I’m sure some vehicles will lend themselves to an easy installation like mine, while some may actually be a bit more difficult. Regardless, I do think the installation process is very easy compared with, for example, installing a mobile ham radio transceiver.

I turned on my car’s power, tuned the radio to the default FM frequency, and after a brief spot of tuning, recognized the unmistakable vociferations of Brother Stair—a sure sign that we’re (a) in North America, and (b) on the shortwaves!

Operating the BST-1

If, like me, you’re the type of person that likes to dive into a new product without referencing a manual, you may need to dial down your impulsivity a little to experiment with the BST-1. While the remote control—a two-button key fob—is extremely simple to use, it’s important to learn how it interacts with the BST-1 receiver.

Key fob

Studenberg’s tuning system is amazingly multifunctional, permitting the tuner to keep his/her hands on the wheel––and car on the road!––while simultaneously pursuing the SWL hobby.

Studenberg unlocked a total of twelve functions on a two-button key fob by employing a clever system of short or long presses.

The BST-1 Key Fob

The BST-1 key fob includes a handy quick reference tag

With a short press of the top or bottom button of the key fob—essentially a quick “click,” like you would use to unlock a car door, and which can readily be done while driving—you can single-step tune in 5 kHz steps, or cycle through preset memories.

Long presses, though, are where you unlock the bulk of the BST-1’s functionality. This was a little confusing to me at first, so I’ll explain how the long presses work:

After pressing and holding the top or bottom button, you’ll hear an audible feedback beep. As you hold the button down, you cycle through one, two, three, and four selections, each marked, again, by an audible beep, thus: beep, beep-beep, beep-beep-beep, and finally beep-beep-beep-beep. Each sequence has a slightly different tone to enable you to better distinguish them.

For example, if I want to toggle the AM filter between narrow (voice) or wide (music), I press and hold the bottom button until I hear one beep, then two beeps, then three beeps: as soon at the three-beep sequence is heard, I let go of the button, and the filter will toggle.

As another example, if I want to store a frequency in memory, I’d press and hold the top button until I heard a sequence of four beeps, then let go.

The commands are logically arranged, in that the most common functions are associated with the shortest key presses. Here’s the complete list of remote functions, courtesy of the BST-1 Owner’s Manual (PDF):

Top Button

Short press (click) – Single step PRESET channels or tune in 5 KHz steps in TUNE mode

1 Beep Toggles sensitivity between HIGH and LOW sensitivity

2 Beeps Sends frequency in Morse code and toggles S-Meter update on/off and toggles squelch on/off

3 Beeps Quick to tune Preset Channel 50, WWV at 5 MHz.

4 Beeps If in TUNE mode, stores currently tuned frequency (Morse code “S”). If in PRESET mode, it will delete the channel. To prevent accidental deletions, this delete function must be executed twice. The first activation will display the message “R U SURE” and send the Morse code “?”. The second activation will delete the channel and then display the message “DELETED”.

Bottom Button

Short Press (click) – Starts scanning up or down in PRESET and TUNE mode

1 Beep Toggles tuning direction up or down

2 Beeps Toggles between PRESET or TUNE Mode

3 Beeps Toggles receiver bandwidth between SPEECH (3 KHz) and MUSIC (5 KHz)

4 Beeps Starts scanning of FM transmitter among 4 frequencies : 88.3, 88.5, 88.7, 88.9 MHz.

It took a couple of days to get used to the commands I used the most (tuning by steps, scanning, memory scans, and changing the filters/sensitivity) mainly because I was driving while using the BST-1.

Several models of shortwave portables, like my Grundig G3, have RDS which allows me to easily set BST-1 station memories. Note that RDS is a standard feature on most vehicles sold today--sadly, my 2008 model minivan lacks RDS.

Several models of shortwave portables, like my Grundig G3, have RDS which allows me to easily set BST-1 station memories. Note that RDS is a standard feature on most vehicles sold today–sadly, my 2008 model minivan lacks RDS.

While driving alone, obviously I couldn’t divert my attention from the road to read the included reference guide attached to the key fob, so I had to simply take a bit of time off the road to review the manual.

Performance

Studenberg’s tuning system is amazingly multifunctional, permitting the tuner to keep his/her hands on the wheel––and car on the road!––while simultaneously pursuing the SWL hobby. My very first day on the road with the BST-1, I was pretty impressed with its performance.

The BST-1 has the same form-factor of most SDRs: a black box. The small size and light weight make it ideal for stashing under a seat or in your vehicle's trunk.

The BST-1 has the same form-factor of most SDRs: a black box. The small size and light weight make it ideal for stashing under a seat or in your vehicle’s trunk.

Of course, “mileage may vary” depending on your particular vehicle and receiver installation, but in my case the BST-1 proved to be a fairly quiet receiver on the road. I heard no significant RF noise due to the car’s ignition or engine, and the FM transmitter audio link worked very effectively. I live in a relatively rural area with only a few broadcasters in the BST-1’s 88.3 – 88.9 MHz transmitter range. There is, however, a fairly strong broadcaster on 88.9, but surprisingly the BST-1’s FM transmitter is strong enough that my car’s FM receiver blocks it. Not bad!

Additionally, the shortwave audio is unexpectedly good through my car’s audio system. The 5 kHz/3kHz bandwidth selections are appropriate for decent audio fidelity; indeed, the 5 kHz filter actually sounds more like a 7 kHz filter to my ears.

In terms of sensitivity, the BST-1 exceeds my expectations. The sensitivity is ample enough to receive almost every domestic shortwave broadcaster, strong international broadcasters, and time stations like WWV and CHU Canada. To be fair, I’m sure the sensitivity is being hampered somewhat by the fact the receiver must operate in a mobile environment with the accompanying local interference, but it’s still quite capable.

In the time I’ve been using the BST-1, I’ve logged the following stations here in eastern North America while mobile:

  • WRMI
  • Radio Australia
  • Radio Havana Cuba
  • HM01 (Numbers Station)
  • WWCR
  • WTWW
  • China Radio International
  • All India Radio
  • WBCQ

Of course, here in North America (during the daytime especially), you’ll hear a lot of the Overcomer Ministries via various private/religious broadcasters. Most of the time, these broadcasts are received as clearly as a local AM broadcaster.

In terms of selectivity, the BST-1 is effective. For about ninety percent of my listening, it rejects adjacent signal interference. In extreme cases—like that of Radio Australia (9,580 kHz), which experiences regular interference from China Radio International (9,570 kHz)—it struggles. But in truth, only the very best of my receivers—typically ones with selectable sync detection—can mitigate most of CRI’s spurious emissions. In other words, I’m pleased I’m able to listen to Radio Australia with the BST-1 despite the noise from CRI.

Click here to view a video I made listening to Radio Australia while waiting 20 minutes in construction traffic.

The BST-1 is unlike any other receiver I’ve reviewed here on the SWLing Post. So let’s get to the point: is it worth the purchase?

What the BST-1 isn’t

If you’re looking for a receiver to snag rare and weak DX while mobile, you will be disappointed. Expectations should be kept in line on this point. Especially while your car is running, the BST-1 simply doesn’t have the characteristics of a DX receiver (low noise floor combined with excellent sensitivity and a super stable AGC, for example).

And frankly, the process of band-scanning in 5 kHz steps seeking an elusive weak-signal station would not be fun.

What the BST-1 is

Simply put: the BST-1 is a lot of fun! Without breaking the bank, the BST-1 can bring many of your favorite broadcasters, and the SWL experience, to your vehicle. Once memories are loaded, it’s a simple process to scan them manually or automatically. And at night? You may very well snag serious DX here and there—especially if parked in an area far away from urban radio interference.

In short, the BST-1 is simple to use, unobtrusive, and, frankly, does what it’s designed to do: permit you to SWL in your car.

BSTFM2

If your vehicle’s radio has RDS, you’ll have full access to the BST-1 display information.

Summary

Invariably, all radios have strengths and weaknesses; here’s a list of my notes from the moment I put the BST-1 on the air:

Pros:

  • Simple installation for a mobile radio
  • Ample sensitivity & selectivity
  • Little ignition/alternator noise in tested installation
  • Surprisingly good audio via FM transmitter link
  • Remote control/key fob (see cons)
    • Non-distracting while driving
    • Easily-to-learn common commands
    • Responsive beeps and “click” sounds to aid tuning
  • Two ways to connect to a DC source: 12V plug or traditional two-wire
  • Two AM bandwidths
  • Two sensitivity settings
  • Appropriate 5 kHz steps for broadcasting tuning
  • RDS tags work amazingly well (see con)

Cons:

  • Remote control/key fob (see pros)
    • Learning curve for infrequently used functions
    • Audio feedback only (no visual feedback) if your car’s radio doesn’t have RDS capability
    • Only two buttons control twelve functions
  • Limited tuning functionality (5 kHz steps up/down with band scan and memory scan)
  • No SSB
  • No sync detection

BST-1-Receiver-Label-Alt

In conclusion, I’m so glad I finally installed the BST-1. If your vehicle has a RDS capabilities, the BST-1 will feel like a fully-integrated part of your mobile audio system. Even without RDS–like my situation–it still packs a lot of punch and is impressively engineered for distraction-free operation..

I must admit, it’s awfully magical to be driving down the highway here in the States, listening to, for example, Radio Australia, some 15,700 km away… So if you travel or commute regularly, and you love SWL, this little mobile shortwave receiver might be just made-to-order for you, too.

At $179.50 plus shipping, the BST-1 costs about the same as a decent portable shortwave receiver–a good value in my book!

Click here for BST-1 ordering information.

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Searchable archive of RFE/Radio Liberty broadcasts to USSR 1953-1995

RFE-RadioLiberty

Many thanks to SWLing Post contributor, Martin Kraft, who shares the following:

Here’s something for the history buffs, an online searchable archive of Radio Free Europe/Radio Liberty broadcasts to the USSR from 1953-1995:

http://www.radioworld.com/article/radio-liberty-munich-period-russian-broadcasts-available/278953

This is brilliant, Martin! I just started searching through the recordings at the Open Society Archives–an impressive collection. Thanks again!

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Guest Post: Patrick compares four receivers

Many thanks to SWLing Post contributor, Patrick Canler who writes to us from France and shares the following guest post which he translated into English:


4 rec

The number of receivers on the market is quite large, and all are sold to be the “best”. I have thought it useful to compare materials using them in the shack as a neophyte SWL; going beyond the features in the brochures to talk about everyday utility. This article does not pretend to do “scientific” testing of the four receivers–skills and special equipment are needed and some specialized laboratories already do it.

The four receivers cover thirty years of electronics manufacturing; four different brands with their own technology and specifications. Over such period, technologies and innovations have evolved. One of the questions I had was: “Does efficiency give any receiver an advantage?”.

The Contenders:

NRD-535 from Japan Radio Company.

nrd535

A reference of the 90s! It received 5 stars from WRTH (which publishes annually the almanac “World Radio and TV Handook”). The NRD-535 has conventional construction with an electronic card per function and discrete and analog filters.

This is a home station receiver, weighing in at 10 kg. The NRD-535 ceased to be produced in 1996, and its value second hand is growing due to its reputation.

AR7030 from AOR

ar7030

Designed by the engineer who developed the LOWE receiver line, the AR7030 is also famous for its reception. It uses special ergonomics and a hybrid of software menus and conventional controls. Quite small, it is easily transportable, due its design that already uses SMC but keeps the analog filters.

IC-R75 ICOM

ICR75

Modern device, classical format and renowned–the R75 is the only receiver tested that is still in production [Note: it was recently removed from production]. It uses CMS, combines analog and DSP filtering (the DSP option is present on the device under test). Its ergonomic design is intuitive and so too are controls and menus.

1102S RADIOJET Bonito,

SDR windows

The 1102S RADIOJET is the only unit in this comparison that is produced in Europe!
The Radiojet includes the latest developments in technology, its performance is simply stunning on the data/spec sheet. The application includes many tools (spectrograph, digital filters, IF and AF recorders, decoder, list of broadcast stations, etc.). It brings together all the SMC receiving electronics in a small box that can fit in a pocket.

SSDR box

The commands and tools are assigned to a software (highly evolved) that runs on the PC which is connected the SDR. The power of the PC also brings graphics, memory, recordings etc.

Why these four rigs?

In the beginning, and it was it which led me to be SWL, I acquired the RADIOJET based on its announced characteristics: sensitivity of “secret services”, adaptable to all cases with filters, graphics tools–“Star Wars equipment” is not it! Later I learned about 50 MHz and at the same time I was struggling to exploit the Radiojet SDR.

A good opportunity to purchase an ICOM R75 brought me back to conventional radio ergonomics. As time passed, I felt my listening skills improved with these 2 receivers and the receiver syndrome grew! A Kenwood R5000 joined the others for its VHF potential and HF reputation.

Then I discovered an NRD-525 on Ebay at a fair price point (rare)–it joined the group of receivers. The latter two were sold and replaced respectively by an AOR 7030 and by NRD-535. I really enjoyed the 525, but the 535 is even better.

In use, the RADIOJET and R75 have always posed problems with settings and sound quality. Kenwood reassured me about the fact that we could get some nice reception without fighting against the controls. validated by the AOR, the NRD 525 & 535. Perhaps I did not understand the manipulation of digital filters???

Now to the shack!

The four receivers are placed side by side, but arranged so as not to disturb each other (eg. the display of the ND535 disrupted the RADIOJET).

The antenna is a 25m random wire oriented East/West with 9:1 balun and its own ground. The passage from a receiver to the other is done by a conventional antenna switch.

All the tests were performed in one evening for constant conditions, there was a fairly present QRM which, was not too bad for comparison purposes. The tests were made in SSB or AM. Preliminary tests had shown that the results in digital modes (PSK31, JT65, ..) relied more on the decoder performance of the PC rather than the receiver. The tests increased from the lowest frequency detected this evening (Europe 1-163 kHZ) to the highest (Foreign Broadcast =15,545 MHz).

The highest frequencies, up to 30 MHz, were deserted in phone, at least for my installation.
The procedure was:

  1. Signal is detected from the spectrograph SDR: it typically “sees” almost inaudible signals.
  2. The candidate frequency is tuned on all four receivers
  3. I listening to all of the signals on all receivers, seeking to get the maximum performance, using all possibilities (notch, passband, IF Shift, integrated amplifiers, attenuator, etc.)
  4. Results are reported in the table below.

One can notice rather quickly:

  • that age is not a handicap
  • the number of functions is not always an advantage
  • 1102S RADIOJET
    Performance and capabilities above the rest (on paper) and requires being connected to a PC. At the present time, on an old Celeron 2Gb ram, the RadioJet’s application never saturated the CPU. The band spectrum display allows one to find the QSO, to filter theoretically perfectly, but it does not always equate to the understandability of the signal or give a pleasant audio. And the number of software features and functions complicates the signal manipulation. The sound is still a little metallic, perhaps due to the signal processing software. Its small size makes it a unbeatable mobile receiver for travel, functions are incredibly useful for those who master the RadioJet application.
  • AOR AR7030
    Inherently simpler at face value–the AR7030 is ultra easy to use. It makes it easy for the user to find and tweak a candidate signal. It’s intuitive and has essential functions only. It has well-designed electronics. The AR7030 is also best receiver tested for handling strong signals without overloading (broadcasts stations or nearby hyper-kilowatted amateur radio operators) which seems to prove that it is designed for these stations. Its limit is the lack of adaptive notch filter types to clean the noise, which is still quite present when the QRM is there. (The newer version 7030+ has added features to help). Finally, it is the smallest stand-alone, portable and with 3 options of antennas connections.
  • ICOM R75
    The R75 climbs up the frequency band all the way to 50 MHz, the only receiver tested with this frequency range. It enjoys an excellent reputation, and can be equipped with a DSP (digital signal processing) on audio. The DSP provides adaptive noise reduction and automatic notch, but has a relative effectiveness which is not always successful in clarifying the signal. Sometimes it adds an unpleasant “rattling”. In use, the interface is pretty intuitive–mixing commands by buttons and menus. Twin pass band tuning (PBT) is effective and allows for IF Shift and/or notch. The speaker is (very) small and gives an aggressive/harsh sound. This receiver is relatively small in size and lightweight. It has a mobile stand and is designed for a 12-14V power supply.
  • JRC NRD-535
    The NRD-535 is the oldest tested–indeed, it was already discontinued before the other receivers were in production. A solid and reliable construction, good ergonomic with conventional front panel controls, good sensitivity, and a decent sized speaker have earned it status as a benchmark in its time. Very sensitive, it extracts the signals and, once found the right filter, gives it pleasant audio. Some signals are not completely cleaned but it does rarely less than others. The NRD-535 is designed for home use: it is heavy, almost 10 kg, and is contains several circuit boards which should not be too exposed to excessive shocks, especially considering they’re over 20 years old.

Summary

My ranking is as follows:

  1. JRC NRD-535 for its ease of use and ability to dig out a usable signal from the QRM.
  2. AOR AR7030 for its simplicity, portability and the fact that it extract good sound/audio quickly, even if a little noisy at times.
  3. Bonito RADIOJET for its small size and its extensive feature set. It is ultra-mobile with a laptop.
  4. ICOM R75 does the job and covers a wide frequency range. But lags in performance relative to the other receiver tested, with a “nasal” sound and a DSP that does not keep its intended promises.

About digital filters: the SDR and ICOM have them, the possibilities are extensive and allow adaptive filtering that others do not with analog filters. By cons they give a dry sound and sometimes add “snap” under whistles. Listening is overall less pleasant in comparison.

Receivers Advantages + / Disadvantages –

Bonito RADIOJET
+ Top technology, visual and many new features over the others on this point
– Complicated, metallic sound, emphasizing the sometimes painful receiver interaction with a computer mouse

Icom R75
+ Great value at the present time
– Audio and imperfect signal cleaning

AOR AR7030
+ Simple and effective
– Ideal companion if it had a notch filter: noise is present

JRC NRD-535
+ Effective sensitivity and clean audio
– Older technology, less portable

Note that this is a personal opinion: a computer geek will certainly get the most of performance and possibilities from an SDR like the Bonito RadioJet.

The NRD-535 shows its age, will one day reach the end of its useful life despite its robust construction. ICOM can cover up to 6m remaining mobile and has a good filter possibilities (DSP). The AOR is easy, fast and gives a correct listening, general purpose. It is the only one to pass the VLF.

The ideal then?
* RADIOJET for sensitivity,
* The RADIOJET for tools/features and functions
* AR7030 for the lower bands
* Icom for the higher bands
* NRD-535 for ergonomics
* AOR for portability

Personally, I use the NRD-535 for DXing (due to superior audio), the AR7030 for digital modes,
the RADIOJET to visually search for signals, and to sometimes clarify the signal even better and because it’s ultra-mobile and always in my PC case.

73,
Patrick F61112


Thank you, Patrick!

I should mention that I think you did a fine job translating your article into English for us! I would not be as successful writing an article in French!  

I’ve never owned a JRC of any sort. If I ever found an NRD-535 for a good price, I would purchase one without hesitation. I’ve never spent much time on the AR7030 either. It’s simple “Lowe-like” front panel is quite appealing for field use. I found that the RadioJet audio is quite nice when paired with a good set of headphones. 

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Radio Northern Ireland this weekend!

rninewqsl

Many thanks to SWLing Post contributor, Jordan Heyburn, who writes:

Radio Northern Ireland is going to be broadcasting to Asia and we hope that the propagation gods will be on our side and take us to Australia and New Zealand. Radio Northern Ireland will be broadcasting via the Shortwave Service in Armenia on Saturday 9th July at 2300 UTC on 17490khz. The show which is being beamed out towards Asia and Australia is a special pre recorded show just for this relay with SSTV at the end of the show in Scottie 2 mode! Have your decoders ready for this!

If you get a reception then why not send us a reception report to [email protected], if you have the correct reception you will be in receipt of a shiny new Radio Northern Ireland QSL. A donation of $2 is preferred to cover postage and this can be sent through paypal to the same email address.

If you wish to hear us on Shortwave at any time we can be found on multiple frequencies which are listed below.

Shortwave Service via Germany – 6005khz 1900 UTC (Saturday)
WRMI – 15770khz 2100 UTC (Saturday)
WRMI – 11580khz 0130 UTC (Sunday)
WRMI – 9955khz 0130 UTC (Monday)

I hope you enjoy the show and let us know where in the world you are listening from!

Best Regards,

Jordan Heyburn

Thanks for the heads-up, Jordan! We’ll be listening!

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