Category Archives: New Products

The Tecsun S-9900: A new high-performance shortwave portable?

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[Update: Please check out this post about the Tecsun S-9900.]

[Update: Also see this post that includes an image of a Tecsun PL-990. I will try to confirm if one or both of these radios may indeed be produced this year.]

Many thanks to SWLing Post contributor and producer, Scott Gamble, who notes the following tweet from @katsu3_uc on Twitter:

Shortly after publishing this photo, Katsu added the following message (this translation via Google Translate):

“I apologize apparently I have put a photo of the prototype stage. However, it seems that there will be no doubt that a new model will be released from TECSUN at the 70th anniversary of the People’s Republic of China, so we will tweet from time to time if there is final information.”

This radio prototype looks a lot like the classic Grundig Satellit 700:

I’ve known for some time that Tecsun has been working on a “high-performance” shortwave receiver and that it would be released by end of year. If this is it, they’re ahead of schedule!

Rest assured, I’ll be checking out this receiver as soon as it’s available! Check out @katsu3_uc on Twitter and, of course, we’ll post updates here on the SWLing Post. Simply follow/bookmark the tag: Tecsun S-9900

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Hamvention Highlights: The QRP Labs QSX 10 watt, general coverage, low-cost HF transceiver kit

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Hans (G0UPL) of QRP Labs holding a QSX transceiver prototype at the 2019 Hamvention

Each year at the Dayton Hamvention I enjoy checking out the latest radio products and services. This year (2019) I found an exceptional number of innovations and will share these in Hamvention Highlights posts. If you would like to check out 2019 Hamvention Highlights as I publish them, bookmark this tag: 2019 Hamvention Highlights

The QRP Labs QSX Transceiver

Hans (G0UPL) of QRP Labs was, without a doubt, one of the most popular guys at the 2019 Hamvention — especially within the QRP community. In fact, at the Four Days In May (FDIM) vendors’ night his table was so busy I didn’t bother trying to force my way through the crowd to speak with him.

As luck would have it, our own table for ETOW was directly across from QRP Labs table at the the Greene County Fairgrounds so, in the end, I spent some quality time with Hans over the course of the Hamvention.

I’ll also make prediction: if the 10 band QSX transceiver delivers what it promises, it will be a serious disruptor in the ham radio transceiver world! This is a good thing. Why?

The QSX is a feature-packed, all-mode, high-performance, affordable, QRP transceiver.

The QSX will have a 24-bit Analog to Digital Converter (ADC) and a 24-bit Digital to Analog Converter (DAC). It will be a fully stand-alone unit and, since it’s an SDR and sports robust DSP, when connected to your PC, it will be recognized as a high-performance sound card. This equates to nearly native digital mode integration without the need for an external sound card interface.

The QSX Prototype Back Panel

The QSX Transceiver will be a through-hole kit with the surface-mounted components pre-installed on the circuit boards. This means the kit should be accessible to anyone with soldering skills.

Hans has even managed to include a mini spectrum display on the front backlit LCD panel.

The price? Around $150 US in total for the transceiver kit, 10 band filter module and enclosure. Unbelievable!

If Hans can pull this off — and I feel pretty confident he can — the QSX will set a new bar for QRP transceiver pricing and performance.

If you’d like more details about the QSX transceiver, check out the following resources sent to me by SWLing Post contributor, Pete Eaton:

The 10 band QSX will sport a general coverage receiver and although though the modes supported currently don’t include AM, Hans plans to add AM for at least reception purposes. This could make for a high-performance stand-alone SDR field radio for HF broadcast listening.

Of course, I also see the QSX transceiver as an accessible entry radio for new ham radio operators who are nervous about forking out $800+ for a new HF transceiver.

I will certainly grab the 10 band QSX transceiver kit when it becomes available and review it here on the SWLing Post. Stay tuned!

If you would like to follow other Hamvention Highlights, bookmark the tag: 2019 Hamvention Highlights

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Hamvention Highlights: Affordable diversity reception with the SDRplay RSPduo

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Each year at the Dayton Hamvention I enjoy checking out the latest radio products and services. This year (2019) I found an exceptional number of innovations and will share these in Hamvention Highlights posts. If you would like to check out 2019 Hamvention Highlights as I publish them, bookmark this tag: 2019 Hamvention Highlights

Diversity reception with the SDRplay RSPduo

Last year, during the 2018 Hamvention, SDRplay announced the RSPduo, a 14bit dual-tuner SDR. We posted a review of the RSPduo on the SWLing Post.

At the time, SDRplay mentioned that the RSPduo could eventually be used for diversity reception.

Diversity reception is the ability to combine or select two signals, from two (or more) antenna sources, that have been modulated with identical information-bearing signals, but which may vary in their fading/noise characteristics at any given instant.

In short, diversity reception gives one a powerful tool to mitigate fading and noise, and to improve a signal’s overall integrity.

Andy and Mike with SDRplay demonstrated SDRuno’s diversity reception functionality and noted that it will soon roll out as a free upgrade to SDRuno, SDRplay’s open SDR application.

I should note here that the SDRplay booth at the 2019 Hamvention was incredibly busy—no doubt, because the RSPduo must be one of the least expensive, most accessible, ways to experiment with diversity reception. Case in point: the new Elecraft K4D transceiver will support diversity reception, but the price is about $4,700 US; the RSPduo can be purchased for $280 US.

Based on the demonstration, this feature will be quite easy to use and I love how it has been implemented in the SDRuno GUI (graphical user interface).

To learn more about the RSPduo, check out SDRplay’s website or read our review. Of course, when SDRplay releases the diversity reception upgrade to SDRuno, we will make an announcement!

If you would like to follow other Hamvention Highlights, bookmark the tag: 2019 Hamvention Highlights

Hamvention Highlights: The Ten-Tec Model 588+ OMNI VII+

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Each year at the Dayton Hamvention I enjoy checking out the latest radio products and services. This year (2019) I found an exceptional number of innovations and will share these in Hamvention Highlights posts. If you would like to check out 2019 Hamvention Highlights as I publish them, bookmark this tag: 2019 Hamvention Highlights

The Ten-Tec OMNI VII+

The Ten-Tec OMNI VII+

The Ten-Tec booth had more activity this year than I’ve seen in many years. The company is certainly showing signs of entering proper production again and innovating.

According to the T-T representative I spoke with at Hamvention, the company’s focus is on improving/upgrading many of their legacy products like the Eagle, Argonaut, 100 Watt Amplifier,  and the OMNI VII. Iterative improvements will eventually be made to the full product line. Upgraded gear will have an added “plus” to the model name.

Ten-Tec’s featured model at Hamvention was the OMNI VII+—their flagship transceiver.

According to the Ten-Tec website, pricing starts at $2,699 US ($3,078 US configured with an internal ATU) and there are a number of units in stock, ready to ship.

The new OMNI VII+ Features (via the Ten-Tec website):

  • NEW! the 588+ has an All aluminum front face, side feet and side carry handle.
  • NEW! dedicated rear panel pan adapter output jack
  • HF 6 Transmit coverage on 6 through 160 meters, 100 watts output, even on 6. General coverage receives from 500 kHz to 30 MHz continuous plus 48 to 54 MHz. SSB, CW, AM, FM, Digital modes. Dual VFOs with SPLIT and REVERSE functions.
  • Full function Color Screen STN transmissive color LCD display with CFL backlight, 320 240 pixels.
  • Legendary QSK CW includes adjustable rise and decay times. User adjustable at the touch of a knob for hard or soft keying according to your taste. Built-in keyer can be used in Curtis A or B modes, adjustable 5 63 WPM.
  • 17 selectable transmit bandwidths from 1000 4000 Hz. DSP generated to give your SSB audio a well-rounded sound tailored to your voice characteristics. A low-frequency roll off provides further control.
  • RX EQ and TX EQ in 6 dB octave filters selectable in 1 dB steps from high pitched at minus 20 dB to essentially flat response at 0 dB to bassy at plus 20 dB.
  • DSP Noise Reduction, automatic notch, and manual notch reduces interference from undesired carriers and random noise. Manual notch range 20 4000 Hz center, 10 300 Hz width, gt 50 dB rejection.
  • Band Sweep gives you a snapshot of the entire band in seconds. Find the pileups or scout for a clear spot automatically without touching the tuning knob.
  • Broad range Auto Tuner identical tuner as used in the ORION II, matches most antennas up to 10 1 SWR HF only. 100 Tune Memories. Order your OMNI VII with or without this option.
  • Three antenna connectors Two SO 239 transceiver outputs, plus a third SO 239 connector for auxiliary receive only antenna. Antenna switching is front panel selectable.
  • Updates by Flash ROM Serial port interface for local rig control via PC and for Flash ROM updates available via the Internet. Commands are a superset of those used for the Jupiter. To obtain the very latest version of the OMNI VII, visit our firmware download the software below. Connect the radio to a serial port on your PC and you are up to date in a flash. Easy!
  • Quad band-stacking registers and 100 memories
  • Optional Model 302R remote encoder keypad works with the OMNI VII. Plug it in and control selected features sitting back in your easy chair.
  • Aluminum chassis construction and steel outer case makes the rig an easy traveler at only 5 inches H x 12 inches W x 14.75 inches D. Weighs just 14 pounds
  • 8 pin mic connector
  • 70 MHz IF up conversion
  • 455 kHz 2nd IF with Collins Mechanical filters

One of the unique features of the OMNI VII+ is that it sports Collins mechanical filters—likely the only modern transceiver that can make this claim.

I’m happy to see that Ten-Tec is innovating and manufacturing again. Certainly a highlight from the 2019 Hamvention!

If you would like to follow other Hamvention Highlights, bookmark the tag: 2019 Hamvention Highlights

Click here to check out the Ten-Tec website.

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Hamvention Highlights: The Palstar TR-30A EMP, an EMP-hardened HF transceiver

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Each year at the Dayton Hamvention I enjoy checking out the latest radio products and services. This year (2019) I found an exceptional number of innovations and will share these in Hamvention Highlights posts. If you would like to check out 2019 Hamvention Highlights as I publish them, bookmark this tag: 2019 Hamvention Highlights

And now for our first highlight…

The Palstar TR-30A EMP

I’ve long been a fan of Palstar, a US company known for their fine antenna tuners and the classic R30 series HF receiver.

At the 2013 Dayton Hamvention, Palstar showcased a prototype HF transceiver called the TR-30. I posted a note about this at the time on my ham radio blog, QRPer.com. The TR-30 never seemed to make it to the market, but that’s not surprising considering the Elecraft KX3 and a number of other QRP transceivers were released the following year.

This year when I approached the Palstar booth, I found a new prototype transceiver: the Palstar TR-30A EMP.

This TR-30 iteration will, without a doubt, have a unique place in the radio market since it has been designed to withstand electromagnetic pulses (EMPs). To be clear, I know of no other transceivers on the ham radio market that are EMP hardened.

Post readers might recall a primer we published about how to protect your gear from EMP pulses (click here to read).  I believe taking some simple precautions to protect gear from natural or man-made EMPs is simply a sound practice. In fact, I keep one complete rig stored in an EMP-proof container as described in our primer.

The Palstar TR-30A EMP requires no external EMP shielding or special handling/storage. It will be natively EMP-proof, even while hooked up to an antenna and without an RF ground attached.

I spoke with Paul Hrivnak (N8PH), President and CEO of Palstar, at Hamvention and he shared a few details about the Palstar TR-30A EMP:

  • The transceiver will be general coverage and will be able to operate on all of the HF ham radio bands.
  • It will have a very simple set of functions–at this point, he doesn’t even plan to have dual VFOs.
  • The output power will be 20 watts.
  • The front panel controls will be very simple and intuitive.

The TR-30A EMP’s unique internal antenna tuner will–if I understand it correctly–be able to match pretty much any load.  It will have manual controls, but will be digitally controlled. Paul said that the ATU is being designed so that a satisfactory match can be found for any make-shift field antenna. I can’t wait to check it out for myself because I hold Palstar in high regard when it comes to antenna tuners.

Of course, from the ground up, the TR-30A EMP will be hardened against EMPs.

He hopes the Palstar TR-30A EMP will be in production by the end of 2019 and retail for $1,100 – 1,200 US.

Of course, I will post any news and updates about the Palstar TR-30A EMP here on the SWLing Post. I will also plan to review and evaluate the transceiver when it hits the market.

If you would like to follow product updates, please bookmark the tag: Palstar TR-30A EMP

If you would like to follow other Hamvention Highlights, bookmark the tag: 2019 Hamvention Highlights

Click here to check out Palstar’s website.

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Please consider supporting us via Patreon or our Coffee Fund!

Your support makes articles like this one possible. Thank you!

The Airspy HF+ Discovery: A new high-performance SDR

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At the 2019 Hamvention, I stopped by the Airspy.US booth and checked out the specifications of Airspy’s latest SDR: the Airspy HF+ Discovery.

At first glance, the Discovery looks a lot like the Airspy HF+ but even smaller and sporting performance upgrades. Keep in mind, I consider the Airspy HF+ (the Discovery’s predecessor) to be one of the best HF SDR receivers on the market–certainly the best sub $200 HF SDR–so of course the Discovery has piqued my interest.

I wanted to get the scoop directly from the source, so I contacted Youssef Touil with Airspy and asked for more insight. What follows is Youssef’s reply:

This new release of the HF+ aims to improve the overall performance in highly demanding situations while fully automating the gain and filtering control. This frees the operator from the RF front-end details and keeps the focus on the actual signals.

The new filters are implemented using a combination of static LC filter banks and other RC filters implemented in silicon. This considerably improves the overall behavior in a crowded band, while still giving a very low noise floor. Also, the very nature of the Polyphase Harmonic Rejection mixer combined with the integrated IF filtering and the high dynamic range Sigma-Delta ADC act like a roofing filter in a heterodyne system. This architecture is quite original with still very few commercial implementations attempted.

A lot of attention went to improve the far-range IIP2 and IIP3 in practical receive scenarios. Other radios just opt to increase the noise figure of the radio to hide the IMD problem, but this also reduces the sensitivity. We opted not to go this way and fix the problem at its root and preserve the maximum sensitivity benefit. The new intercept points protect the front-end from images originating from various IMD scenarios while still using the maximum gain. The LF and VLF bands also benefited from these improvements.

The PCB layout was also improved to get rid of most of the digital noise. The new PCB has 6 layers filled with ground plans and a metal shield can soldered on top of the RF section. This might look overkill for a HF/VHF radio, but given the MDS we are aiming at, it’s really necessary. The older PCB was 4 layers only.

The radio weighs less than 30 grams and fits inside a 45 x 60 x 10 mm volume (ex. The SMA connector). Given the achieved performance and the form factor, we expect it to interest a lot of our SIGINT partners who are already using the first HF+ design.

As you know, when it comes to high performance, the big players still opt for heterodyne systems in the actual RX path and only use direct sampling for the “eye candy” panoramic view. This was confirmed by Yaesu (FTDX101D) and Elecraft (K4). The reason is evident: Good mixers are still better (and scale better) than state of the art ADCs. I think our Polyphase Harmonic Rejection mixer-based SDR architecture is a step in the right direction, where both goals are achieved without compromises, and in the most economical way. The first version was kind of a revolution for us, but the “Discovery” is the consolidation of a lot of polishing opportunities we discovered since the first release.

Thank you for the details, Youssef–it sounds like a lot of innovation and iterative upgrades have gone into the Discovery receiver design.

Of course, I will plan to grab the HF+ Discovery and review it here on the SWLing Post. In the meantime, check out the excellent RTL-SDR website where Carl has posted a short preliminary review of a pre-production HF+ Discovery.

Click here to check out the HF+ Discovery at Airspy and place a pre-order ($169 US). 

Taking the new Mission RGO One transceiver to the field!

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SWLing Post readers might recall that last year at the 2018 Hamvention, I met with radio engineer, Boris Sapundzhiev (LZ2JR), who was debuting the prototype of his 50 watt transceiver kit: the Mission RGO One (click here to read that post).

Since last year, I’ve been in touch with Boris, and we arranged to meet again at the 2019 Hamvention so I could take a closer look at the RGO One, especially since he has started shipping the first limited production run.

The RGO One delivers everything Boris promised last year and Boris is on schedule, having finished all of the hardware design and having implemented frequent firmware updates to add functionality.

Excellent first impressions

I’ll be honest: I think the RGO One was one of the most exciting little radios to come out of Hamvention this year. Why?

First of all, in contrast to some radios I’ve tested and evaluated over the past two years, I can tell immediately that the Mission RGO One was developed by an active ham radio operator and DXer.

Here are some of the RGO One features and highlights as taken from the preliminary product manual (PDF):

    • QRP/QRO output 5 – 50W [can actually be lowered to 0 watts out in 1 watt increments]
    • All mode shortwave operation – coverage of all HAM HF bands (160m/60m optional)
    • High dynamic range receiver design including high IP3 monolithic linear amplifiers in the front end and diode ring RX mixer or H-mode first mixer (option).
    • Low phase noise first LO – SI570 XO/VCXO chip.
    • Full/semi (delay) QSK on CW; PTT/VOX operation on SSB. Strict RX/TX sequencing scheme. No click sounds at all!
    • Down conversion superhet topology with popular 9MHz IF
    • Custom made crystal filters for SSB and CW and variable crystal 4 pole filter – Johnson type 200…2000Hz
    • Fast acting AGC (fast and slow) with 134kHz dedicated IF
    • Compact and lightweight body [only 5 lbs!]
    • Custom made multicolor backlit FSTN LCD
    • Custom molded front panel with ergonomic controls.
    • Silent operation with no clicking relays inside – solid state GaAs PHEMT SPDT switches on RX (BPF and TX to RX switching) and ultrafast rectifying diodes (LPF)
    • Modular construction – Main board serves as a “chassis” also fits all the external connectors, daughter boards, inter-connections and acts as a cable harness.
    • Optional modules – Noise Blanker (NB), Audio Filter (AF), ATU, XVRTER, PC control via CAT protocol; USB UART – FTDI chipset
    • Double CPU circuitry control for front panel and main board – both field programmable via USB interface.
    • Memory morse code keyer (Curtis A, CMOS B); 4 Memory locations 128 bytes each

What really sets the Mission RGO apart from its competitors is the fact that it’s compact, lightweight (only 5 lbs!), and has a power output of up to 50 watts. Most other rigs in this class have a maximum output of 10 to 15 watts and require an external amplifier for anything higher.

The RGO One should also play for a long time on battery power as the receive current drain is a modest 0.65A with receiver preamp on.

The RGO is also designed to encourage a comfortable operating position. The bail lifts the front of the radio so that the faceplate and backlit screen are easily viewed at any angle.

The keypad is intuitive and–hold your applause!–all of the important functions are within one button or knob press!

The front panel design is simple and clean. There are no embedded menus to navigate to change filter width, power level, RF gain, keyer speed, mic gain, pre amp, or audio monitor level. Knob spacing is excellent and I believe I would even be able to operate the RGO while wearing gloves.

Even split-operation is designed so that, with one button press, you can easily monitor a pile-up and position your transmit frequency where the DX station last worked a station. (This is similar to the Icom XFC button). The user-interface is intuitive; it’s obvious to me that Boris built this radio around working DX at home and in the field.

Speaking of the field…

Parks On The Air (POTA) with the Mission RGO One

At my request, Boris has kindly loaned me one of the first production run units to test and review over the next few months. I intend to evaluate this radio at home, in the field, and (especially) on Field Day. By July, I should have a very good idea of how well this Bulgaria-born transceiver performs under demanding radio conditions!

I had planned to begin my RGO One evaluation after returning home from Hamvention, but I couldn’t resist taking it to the field, even though the propagation forecast was dismal.

The first leg of my journey home from Hamvention took me to Columbus, Ohio, on Monday, so I scheduled a Parks On The Air (POTA) activation of Delaware State Park, K-1946.

Delaware State Park (POTA K-1946) in Delaware, Ohio.

My buddy Miles (KD8KNC) and I met our mutual friend Mike (K8RAT) at the park entrance and quickly found a great site with tall trees, a little shade, and a large picnic table.

We set up the RGO One and, for comparison, my Elecraft KX2 for the POTA activation.

I won’t lie: band conditions were horrible. Propagation was incredibly weak, QRN was high, and QSB was deep. Yuck!

Still, this activation gave me a chance to test the RGO One in proper field conditions.

I was limited to SSB since the only CW key I had with me, the paddle specifically designed to attach to the front panel of the Elecraft KX2, wouldn’t work with the RGO One. In addition, I was limited to 25 watts output because the antenna I deployed, the LnR Precision EFT Trail-Friendly end-fed antenna, can only handle power up to 25 watts.

Although I had never operated the radio before, I was able to sort out most of its functions and features quickly.

The receiver audio was excellent and the noise floor seemed quite low to my ears. The internal speaker does a fine job producing audio levels that are more than ample for a field setting.  Still, I prefer operating with a set of earphones in the field–especially important on days like this when propagation equates to a lot of weak signals.

Although I failed to make a total of ten contacts to claim a proper POTA activation, I was pleased with offering up K-1946 to seven lucky POTA hunters/chasers. I simply didn’t have enough time available to work three stations more at such a slow QSO rate.

Of course, my signal reports were averaging “5 by 5” and were never more than “5 by 7” regardless of which rig–the RGO One or the KX2–I was using. The reports on the RGO One transmit audio reports were great.

Stay tuned!

I will publish my first review of the Mission RGO One in The Spectrum Monitor Magazine, most likely in August or September.  In the meantime, I will post updates here as I put the RGO One through its paces. I’m especially excited about using it during Field Day with my buddy Vlado (N3CZ) to see how it holds up in such an RF-dense environment.

And now that the POTA bug has bitten me?  Expect to catch me on the air with the RGO One over the next few weeks!

If you’re interested in following the Mission RGO One, bookmark the tag: RGO ONE.

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