Category Archives: Radios

A “knobs and switches” oldster investigates the SDRplay RSPdx . . . Wow!

By Jock Elliott, KB2GOM

It is hard to imagine a less spectacular looking piece of radio gear than the SDRplay RSPdx. It is literally a black box. Aside from the printing on top of the box, the most exciting thing about the RSPdx are the two red plastic covers on the antenna connectors on the side. There are no switches, no knobs . . . you can’t do anything to it except connect an antenna (or antennas) on one side and a USB cable on the opposite.

But once you connect the USB cable to your laptop and fire up the SDRuno software (that you have previously downloaded and installed), you are now in command of a listening post that covers from 1 kHz to 2 GHz.

We’ll get to the important stuff in just a minute, but first a little background.

For an oldster retrocrank like me, a proper radio has knobs and switches . . . preferably a knob or switch for every job. Lately, however, I have noticed that a lot of DXers and ordinary listeners are reporting good success with SDRs – software-defined radios. So I started to wonder about them.

There are three elements to a software-defined radio like the SDRplay RSPdx:  the SDR box itself, which is the part of the system that actually receives the radio signals; a Windows computer (laptop or desktop), which provides the command and control for the SDR; and whatever antennas are required to receive the signals that the listener would like to hear. And, just to be absolutely clear, you need all three elements for the SDR system to work at all.

With my curiosity about SDRs rising, I inquired of Thomas, SWLing’s Maximum Leader, whether SDRplay – one of SWLing Post’s sponsors – might like me to take a look at one of their SDRs. Their answer was an emphatic Yes, and I had an RSPdx in my hands just a couple of days later at no cost to me or the SWLing Post.

I have to admit I had some trepidation about the process of bringing the RSPdx online because any time you have three different elements from three different sources that must work together for a system to function properly, there is always the possibility that some of the elements might not “play well together.”

Installation is easy and fast. Connect the RSPdx to the computer using a USB A-male to B-male cable (which the user must supply; often called a printer cable), then connect the antennas using the appropriate cable. In my case, I connected an MFJ 1886 Receive Loop to the Antenna C connector and an off-center fed dipole to the Antenna A connector.

To SDRplay’s great credit, they have produced an excellent video for first-timers and folks not familiar with SDRs — https://youtu.be/Oj_-dOLVzH8 . I recommend watching it, perhaps a couple of times, before you get started.

When you first fire up the SDRuno software, you will see the main panel:

Click on the “RX” button, and the Receive panel will be displayed. After you slide it over, it will look something like this:

Click on SP1 or SP2 in the main panel, and one of the peak displays will appear:

Finally, click on the PLAY button in the main panel, and whatever frequency you have selected will begin to play. Continue reading

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Paolo’s review of the Eton Elite Satellit

Many thanks to SWLing Post contributor, Paolo Viappiani, who shares the following guest post:


ETON Elite Satellit: an expensive flop 

by Paolo Viappiani, Italy 

Introduction 

After various and sometimes conflicting announcements that have created strong expectations in radio listening enthusiasts, ETON has recently launched on the extra-European market (basically in the United States) what should have been its “top of the range” portable, the Elite Satellit model . Aesthetically (and also functionally) inspired by the previous E1 model, the new portable radio should have been free from the defects of its predecessor, in particular as regards the “sticky” coating of the plastic case but also with respect to other technical drawbacks repeatedly reported by users (display contrast and shading, etc.).

The new Elite Satellit was announced to look practically identical to the E1 model and to use the same cabinet, but with various additions and improvements: RDS, FM-HD reception, Air Band, etc. A frequency resolution of 10 Hz in the shortwave bands, a PBT (Pass-Band Tuning) facility, a large LCD display with the possibility of changing its background color were also provided.

It is therefore obvious that its release was highly anticipated, and the resulting expectation gave rise to numerous pre-orders of the radio in the United States, where the main distributor was (and still is) the well-known Universal Radio company owned by Fred Osterman [1].

Unfortunately, the initial boom in sales of the ETON Elite Satellit was followed by many return requests due to the poor performances of the radio and the numerous defects encountered by users, also reported in a lot of videos and negative reviews on the Internet [2].

Fred Osterman himself, disappointed by the performance of a radio that he should have sold as an excellent portable, began to test the individual devices in his own laboratory and to return to ETON all the units that did not meet the declared specs (basically the vast majority of those received for sale) [3]. All this caused great confusion at ETON, which was forced to somehow remedy its errors (mainly due both to a very approximate alignment of the circuits and to an almost non-existent final quality control).

Unfortunately, despite the precautions adopted “hastily” by ETON, most of the “overhauled” devices that were returned to Universal Radio continued not to comply with the specifications, so that Fred Osterman, who is a good technician and a very honest dealer, decided to cancel most of the orders received and to sell the very few radios found to be in good working order within the United States only, (see again note [3]). I myself placed an order from Universal Radio for an ETON Elite Satellit on August 8, 2022 (Order ID: #8992932, retail price $599.99 plus shipping and import customs duties), but Fred was forced to “drastically cut” the orders received and to cancel mine too, due to the impossibility of satisfying the many customers on this side of the pond. However, my desire to have an example of the ETON Elite Satellit in my hands, in order to be able to see, test and judge the new radio it was really great, and great was also the wish to realize if the many negative impressions circulating on the web were or were not justified and true.

So I decided to look for other ways to buy the “latest cry” of ETON. The opportunity presented itself to me, almost unexpectedly, by visiting the American site of Amazon [4].

The purchase and the arrival of the radio; my first impressions 

I therefore ordered an ETON Elite Satellit portable radio on the Amazon.com website on January 17, 2023 at the price of $698.16 (including shipping and customs duties). I report in Figure 1 the screenshot concerning my order #113-3575479-2262609 which, as it appears, was delivered to me on January 23, 2023, after only five days; this demonstrates the truthfulness of my statements.

Figure 1: A Screenshot of my Amazon.com order dated January 17, 2023.

The shipment was delivered to me by UPS courier in the usual Amazon packaging in a plastic bag (Figure 2).

Figure 2: The UPS label and the Amazon plastic bag.

Inside the envelope was a cardboard box containing the radio, in understandably less than perfect conditions (Figure 3).

Figure 3: The cardboard box of the ETON Elite Satellit.

Figure 4: The contents of the radio box.

Once the package was opened, the contents of the box looked like in Figure 4: two shock-absorbing spacers held the device in position (inserted in a plastic bag) and its AC power supply (into a white box, and obviously with a 117V input voltage). There was also the “User Guide” in a paper version and a “mini-guide” to listening to short waves; completely absent was the CD that used to be enclosed in the box of the previous E1 version of the radio.

Continuing with the operations, I came across a sort of brown plastic cover intended for the protection of three sides of the radio (front, top and back) which can be held in position by some magnets and is provided with two circular holes in correspondence with the tuning knobs and volume of the radio (Figure 5).

Figure 5: The ETON Elite Satellit radio and its “case” (?)

I omit to make comments on this “protection”; I only say that in my opinion it is useless (and ugly too) and I believe that the gentlemen of ETON could have wasted their energies otherwise; but maybe someone likes it too…

Figures 6 and 7 show the front and back of the portable radio as soon as it has been removed from the protective plastic bag. Note the almost identical appearance of the cases of the Elite Satellit and of the previous E1 model.

Continue reading

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Wlodek repairs a near mint Sony ICF-SW7600

Sony ICF-SW7600 (Source: Universal Radio)

Many thanks to SWLing Post contributor, Wlodek, who has been quite busy repairing vintage receivers and ham radio gear during the Russian invasion of Ukraine. Wlod’s neighborhood in Kiev experiences frequent blackouts, thus much of his soldering work must be done while mains power is available.

Wlod just shared the following video documenting a recent repair he did on a new-old-stock Sony ICF-SW7600.

Wlod notes:

One of [my last repairs] was new old stock Sony ICF-SW7600 restoration. One guy watched my past videos and wanted one for himself. I don’t know where he found it in such excellent external condition, but age and typical problems require it to be prophylaxis.

The first turn on and it does not receive the station at all. These receivers have a known problem of leaking electrolytic capacitors. They also need to be alignment.

I demonstrate how to safely remove old capacitors.

Click here to view on YouTube.

Thank you so much for sharing this with us, Wlod! What a beautiful portable in near mint condition! 

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Making a good thing better: The C.Crane CC Skywave SSB 2

Last month, C.Crane sent me (and the infamous Jock Elliott–read his review here) a pre-production CC Skywave SSB 2 portable shortwave radio.

In full disclosure and to be clear: these pre-production units were sent to us free of charge by C.Crane who is a long-time sponsor of the SWLing Post.

Back in October, I was very pleased to see that C.Crane had updated the CC Skywave SSB to version 2 in their latest product catalog.

If you’ve read the SWLing Post for long, you’ll know that the CC Skywave SSB is my choice travel and EDC radio. I prefer it over any other portable I own (and I do have quite a lot) because it’s so insanely useful, efficient, lightweight, compact, and durable.

I’ve taken the CC Skywave SSB and the original CC Skywave on more travels that I could possibly remember.

What’s so great about the Skywave series?

I’m a one-bag traveler.

Me, at Charlotte-Douglas International waiting for a flight to the Winter SWL Fest in 2019.

When I fly, I take only one carry on bag that’s so compact it can fit under the seat in front of me in any type of commercial aircraft.

I firmly believe there is no freedom like one-bag travel. While others are stressing over where to stow luggage, how to carry it all, or why their checked-in luggage didn’t arrive at the destination, I’m cruising through the airport and to my destination unhindered.

The key to successful one-bag travel is only carrying what you need, and focusing on items that are multi-function.

Me? I need a good multi-band radio.

The CC Skywave SSB is the most comprehensive compact portable I own. It’s truly a “Swiss Army Knife” of a receiver. Here are the bands/features I appreciate:

  • AM/Mediumwave (9/10 kHz steps selectable)
  • FM broadcast (with expanded FM range when in 9 kHz step mode)
  • Shortwave
  • AIR band (to listen to Air Traffic Control and Air comms)
  • Weather Radio with alert (this functions brilliantly in the US and Canada)
  • A proper clock and alarm (that can display in 24 hour time!)
  • It uses two common AA batteries that can even be internally-recharged if NiMH
  • It even has a squelch feature for scanning, say, the AIR band

All of this and it’s also one of the best-performing compact radios on the market. It’s a capable radio for portable DXing right out of the box (or you can hot-rod it like Gary DeBock does!).

Side note: the CC Skywave’s weather radio reception is better that any other radio I’ve tested including dedicated weather radios. Continue reading

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A review of the Tecsun H-501x portable shortwave radio receiver

I was recently searching for my review of the Tecsun H-501x on the SWLing Post to send to a reader when I realized I had not yet published it here! Let’s fix that…

The following review of the Tecsun H-501x was originally published in the November 2021 issue of The Spectrum Monitor magazine. Enjoy:


A review of the Tecsun H-501x

by Thomas (K4SWL)

Last year [2020], we were treated to a group of new shortwave portables from Tecsun:  the PL-990, PL-330, and the H-501.

Although all of these models garnered attention from shortwave listeners, one model in particular seemed to draw the most interest, the Tecsun H-501.

No doubt, much had to do with the H-501’s size––a large format portable––and especially the twin stereo speakers, that no doubt sparked the interest of those of us who owned (or wished we owned) the venerable Grundig Satellit 500 or 700 with its reputation for robust audio.

Tecsun was also very clear during their product announcement in 2019 that the H-501x is the flagship portable for the Tecsun line.

H-501 versus H-501x

Note that the product being evaluated in this review is the H-501x; the latest “export” version of the H-501.

The differences between these two models is fairly modest. The “x” model gives the user a slightly lower frequency floor in longwave and shortwave, and finer FM tuning (50 kHz as opposed to 100 kHz) when the AM tuning steps are set to 9 kHz as opposed to 10 kHz.

The differences are so modest between the H-501 and H-501x, I wouldn’t be worried if you already have the H-501. I would simply encourage you to only purchase from a reputable Tecsun distributor so you can be confident you’re not receiving one of the very early production runs of the H-501 that was only distributed domestically within China. Some of these early domestic models didn’t have all the refinements of the latest H-501 versions. I would encourage you to only purchase the H-501 or H-501x from a reputable distributors like Anon-Co, Waters and Stanton, Tecsun Radios Australia, and Bonito.

Unique features

Besides the large dual speakers of the H-501x, there are a number of other unique features and design choices that truly set the H-501 series apart from other Tecsun models.

 

Firstly, the H-501x uses two 18650 Lithium Ion batteries housed in two separate battery compartments. Both batteries can be internally charged, but here’s the interesting part: each battery seems to be somewhat independent of the other. When you engage battery charging, you must select, via a mechanical switch on the back of the radio, “Battery A” or “Battery B.” Only one battery can be charged at a time, and thus only one will power the radio at a time.

More than once, I’ve been listening to the H-501x and the battery indicator started flashing, signifying a low battery. I simply switched the battery switch to Battery B, and, voliá:  I have a full battery again! This reminds me of a college friend’s VW Beetle that had a spare fuel tank…with this unique feature, when you were running low on fuel, you’d kick in the spare fuel tank and then make plans to refuel the main tank soon. Of course, with the H-501x, both these “fuel tanks” are also generous ones, in that the batteries last for a good while.

I find that the play time of each battery impressive given the size and audio amplification used in the H-501x. I had worries that the unit’s need for two batteries could suggest a short battery life, but fortunately this hasn’t been the case, no matter what mode I’ve used (FM, AM, shortwave, or Bluetooth).

However I will note here that the supplied switching power supply will inject noise if you try listening to AM or shortwave while charging. This hasn’t affected FM reception, though.

The fold-out metal bail on the H-501x is very large. This shouldn’t have surprised me, but it did. The H-501x is tall and wide, but not very deep––only marginally deeper than, say, the PL-880. The bail needed to be low-profile, but also support this mini “wall” of the radio while in use. The metal wire bail is handy and certainly does the trick, although there’s only one tilt position, and when it’s deployed, the radio effectively has a large footprint. This might limit where you can set it if the surface––say, a bedside table––is small. Not a problem for me, but worth noting. Continue reading

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Do you use a general coverage transceiver as your primary shortwave radio?

If you’ve been reading the SWLing Post for long, you’ll know that I think the Icom IC-705 is a brilliant radio for shortwave, mediumwave and even FM DXing. I mention this in my IC-705 review.

Indeed, I realize that I may even use the IC-705 as much as I use some of my excellent computer-connected SDRSs (Software Defined Radios). The IC-705 is actually an SDR, too, just one that is self-contained, stand-alone, and powered by a rechargeable battery. It’s just so convenient and easy to use–plus it has very useful built-in recording/playback functions.

I also use my Elecraft KX2 for SWLing–although not designed for broadcast band listening, it does a pretty amazing job especially if your primary goal is weak-signal work. Elecraft attenuated the mediumwave band on purpose, thus MW DXing with the KX2 is not feasible.

Do you use general coverage transceivers for SWLing?

Truth is, modern general coverage transceivers tend to be based on SDR architecture these days, thus incredibly capable and versatile as a broadcast band receivers.

I’m curious: do you primarily use a general coverage transceiver for SWLing? If so, why and which make/model? Please comment! If you prefer a dedicated receiver over a general coverage transceiver, please consider sharing your thoughts as well!

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Which radio? How to avoid analysis paralysis…

I’ve been running the SWLing Post for fourteen years (!!!) and during that time I’d say that one of the top three questions I receive is a variation of “Which radio is better?” followed by a list of radio makes and models.

Sometimes that question is easy to answer because the reader is new to the world of shortwave, they only have two choices, and one is an obvious winner.

In truth, though, that’s very rare.

Most of the time–and I’m speaking from having received hundreds of these questions–I’m asked to choose between a list of radios that the reader has thoroughly researched, uncovering radios DXers and enthusiasts consider to be the best in price class.

They’ve already read numerous reviews, created spreadsheets comparing features/specifications, and they’ve weighed all of the pros and cons by price class.

But they can’t decide.

Analysis paralysis

We’ve all been there, right?

We’re ready to invest a bit of money in a new radio and there are many good options, but there’s no one stand-out…no “perfect” radio with everything we seek.

It’s a slippery slope.  We start our research with some obvious choices. We can’t decide which is best, so we broaden our research, we take deeper and deeper dives, but the more we research, the more confused we become.

Sound familiar? (Trust me: you’re not alone.)

I remember receiving an email once from someone with a list of two dozen sub $150 radios on a multi-tab spreadsheet.They had every feature and specification listed for comparison. They wanted to know which of these radios was “the best.”

I can’t answer this questions for a very good reason.

It’s all about personal preference

My favorite radio from a list of twenty four will likely not be your favorite radio.

Enjoyment of a radio has everything to do with you as the radio’s operator.

Ask yourself, “What’s my main goal–?”:

  • DXing?
  • Weak signal work?
  • Band-scanning?
  • Pirate Radio hunting?
  • Travel?
  • Emergency communications?
  • Casual broadcast listening?
  • Digital mode decoding?
  • Scanning?
  • Mediumwave DXing?

Look at your options with this goal being given the priority.

A rather simple way to avoid analysis paralysis

If you’ve thoroughly researched multiple options, the likelihood is that overall performance between the models is comparable. Sure, some models might have better AGC, better sync, finer tuning, a better encoder, or better sensitivity, etc. but the overall performance package is similar else there’d be no difficult decision to make.

My advice is to pick the radio that you believe you’d enjoy the most.

  • Do you like the display and large encoder on one? Does it look like the sort of radio you could cuddle up to late into a cold winter evening? Go for it!
  • Do you like the compact size and features of one? Does it look like a radio you could pack away for an international flight then use on a mini DXpedition in a foreign country? Grab it!
  • Do you like the comments you’ve read about the robust audio and speaker of a particular model? Pull the trigger!

I’ve been communicating with a reader over the past few days that is stuck in analysis paralysis. No doubt, this is what prompted this post.

Here’s what I told him this morning:

All of the models we’ve discussed are good ones and have overall excellent performance. I would simply pick the one you think you would enjoy using the most.

[Keep in mind that] DXing is a skill.

A skilled DXer can accomplish a lot with almost any radio! It’s easy to fall in the trap of options overload. Just find a good deal on a radio you think you would enjoy and go for it! 

I suppose another way of stating it would be if you believe you’re stuck in analysis paralysis, follow your heart instead of your head.

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