Category Archives: New Products

New from Heathkit: the Explorer Jr TRF AM radio receiver kit

The Heathkit Explorer Jr. (Image Source: Heathkit)

Yes, the legendary Heathkit company is back and their first kit is a simple Tuned Radio Frequency (TRF) AM/mediumwave analog receiver: the Explorer Jr.

I knew Heathkit was back in business and under new management, but hadn’t heard any updates as of late. Their president, Andy, just sent a message to the “Heathkit Insiders” group explaining what the team has been up to:

“We’ve designed and developed a wide range of entirely new kit products. We authored the manuals for these kits, complete with the beautiful line art you rely on, preserving and respecting our iconic historic Heathkit style. We developed many new inventions and filed patents on them. We relocated Heathkit, and set up a factory, and a warehouse, and offices, in Santa Cruz, California, near Silicon Valley. We built the back office infrastructure, vendor and supply chain relationships, systems, procedures, operations methods, and well-thought-out corporate structure that a manufacturing company needs to support its customers, to allow us to scale instantly the day we resume major kit sales. All this effort enables us to introduce a fleet of new kits and helps ensure Heathkit can grow, prosper, and continue to bring you great new products for a very long time.”

The Insiders’ message goes into much more detail–I would encourage you to contact Heathkit about joining this group.

The big news in this message was the launch announcement of the Explorer Jr. kit which can be ordered from their website now. The price is $149.95 plus shipping. Heathkit anticipates a 30-day shipping time for the first set of orders.

Here’s a description of the kit from their website:

A Radio Kit Whose Time Has Come.

Again.

When Heath started designing & selling do-it-yourself airplane kits shortly after the Great War, the state-of-the-art in radio was the Tuned Radio Frequency (TRF) design.

A TRF radio was a great deal. If you had a great deal of money. A TRF receiver became a fixture in the homes of families around the world, receiving the news and music AM broadcasts of the day. A family AM radio was a big investment — $100 to $625 in 1929 dollars. (With inflation, that’s $1,400 to $8,700 in today’s dollars.) Of course, at that price radios also were beautiful. They were made of fine wood, and designed to last. Radios were a visible and attractive furnishing you could be proud to have in your living room or parlor.

Heathkit’s TRF radio is a great deal. And a great deal of radio. This Explorer Jr^TM radio is modeled on the original TRF designs, but better. You get to build it yourself. It’s safe and simple enough for beginners to assemble and understand. But it receives AM broadcast stations with performance superior to the vintage radios of 1930.

With the number of Heathkit enthusiasts out there, I suspect this first run of kits won’t last long. The kit trim is available in six colors: Silver, Cranberry, Cucumber Green, Plum Pie, Sapphire Blue, and Tangerine.

Click here to view and order the Explorer Jr on Heathkit’s webstore.

DXtreme Reception Log X

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SWLing Post sponsor, Bob Raymond (NE1I) at DXtreme, writes:

I’m pleased to announce that the latest version of our logging software for radio and TV monitoring enthusiasts is now available:

www.dxtreme.com (Version 10.0).

Please find the full product announcement below:

DXtreme Reception Log X (Version 10.0)

DXtreme Software™ has released a new version of its popular logging program for radio monitoring enthusiasts: DXtreme Reception Log X™ (Version 10.0).

Like other logging programs, DXtreme Reception Log X lets listeners and DXers log the stations they’ve heard. But unlike other logging programs, Reception Log X provides advanced features that can add a new dimension to logging activities.

New Features in Version 10.0

Afreet Ham CAP1 Integration — Lets users run short- and long-path propagation predictions from the Schedule Checker, Reception Log, Countries, and Transmitter Sites windows. Reception Log X sends key data to Ham CAP which, in turn, displays a chart showing the signal-to-noise-ratio prediction by time and frequency and a Mercator projection showing the current propagation prediction for the path between the user and the target station.
Improv ImagingTM — A dedicated tab on the Reception Log window, Improv Imaging lets users associate ad hoc images with log entries. Users can capture from their screen, scan from their image scanner, or paste from the Clipboard any images they want to associate with a displayed log entry, such as screen captures of stations received on digital applications, waterfall displays, Amateur TV pictures, Ham CAP maps showing propagation conditions at the time of reception, etc. An Improv Image Explorer lets uses peruse their collection of Improv images, and call up the log entries with which they are associated.
Preview QSL Image Viewer — Is now larger and expandable on the Verification tab of the Reception Log window, and the new QSL Image Explorer lets uses peruse their collection of QSL images, and call up the log entries with which they are associated.
Colorful User Experience Enhancements — Lets users set the foreground and background colors of heading and data rows on grids throughout the program — one set of foreground and background colors for odd data rows, and another for even data rows — making it easier to view schedules on the Schedule Checker, log entries on the Last Log Entries grid and window, and data in Reports.

Advanced Features

Schedule CheckerTM — Lets users import schedules from Aoki, EiBi, and
FCC AM web sites and display that schedule data according to the filter criteria they specify. A list box lets users switch between the schedules at will. And, depending on the schedule type, users can filter schedule information by band, frequency, station, country, city, state, time of day, language, antenna direction, and target area. When the What’s On Now? function is activated, the schedule refreshes automatically at the top of each hour for Aoki and EiBi schedules.

For each schedule item, Schedule Checker queries the Reception Log X database to let users know – by means of user-defined, foreground and background display colors – whether they need to monitor a station for a brand- new or verified country. Schedule Checker also displays bearing and distance, runs Ham CAP propagation predictions and DX Atlas azimuth plots2, tunes supported radios to schedule frequencies when double-clicking schedule items3, and starts log entries for scheduled stations.

Last Log Entries Grid— Located on the Reception Log window, the grid shows up to 5000 of the most recent log entries added. Its records can be sorted, and double-clicking records displays detailed data on the Reception Log window.Users can resize the grid columns and scroll horizontally to columns that do not appear initially. But because the names of stations and NASWA countries can be quite long, users can also display a larger, resizable Last Log Entries window. A Properties dialog box lets users change the order of columns, the number of log entries to display, and the foreground and background colors and font attributes of grid headings and data rows system-wide.
Reception Reports — Users can create customized paper and e-mail reception reports plus club report entries for reporting catches to clubs and magazines.
Social Media Posting — When users add or display a log entry, Reception Log X prepares a post announcing their DX catch and displays it on the Social Media Post tab. From there, users can drag the post to their favorite social media web site(s) to share their catch with others.Using the Script Editor window, users can create and edit social media scripts that format social media posts to their liking. A browse button lets users select the script they want to use. Three scripts come with Reception Log X.
Direct Print SWL and Address Labels — Users can prepare SWL and Address labels for direct output to their printers, and print labels one-at-a-time or in any number up to the maximum number of labels on each page of label stock.
Rig Control — Retrieves the frequency and mode from supported radios and permits tuning from the Schedule Checker and Reception Log windows.
Multimedia Features — An embedded Audio facility lets users maintain an audio archive of stations heard. An integrated QSL ImagingTM facility lets users scan, display, and explore QSL and e-QSL images.
Performance Reporting — Produces reports that track the performance of the user’s monitoring station, and lets users FTP those reports to user-provided Web space for remote access. Reports integrate with DX Atlas to generate pin maps.
Support for Monitoring Amateur Radio Operators — Users can retrieve call sign and address information for monitored hams from optional Web services (HamQTH.com, BuckmasterTM HamCallTM, and QRZ XML Logbook Data) and send automatic eQSL requests to monitored hams via www.eQSL.cc.
Documentation — Includes on-line Help and a Getting Started Guide.

Operating Systems, Pricing, Contact Information

DXtreme Reception Log X runs in 32- and 64-bit versions of Microsoft Windows® 10, 8.1, 8, 7, Vista®, and XP. It retails for $89.95 USD worldwide for electronic distribution. Pricing for CD versions and upgrading users is available on our Web site. All prices include product support by Internet e-mail. For more information, visit www.dxtreme.com or contact Bob Raymond at [email protected].

Bob, thanks for sharing your product announcement and thank you for sponsoring the SLWing Post!

Click here to visit DXtreme or here to download the PDF of this product announcement.

Jeff’s Updated Sangean PR-D4W Review

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Many thanks to Jeff McMahon, from the Herculodge, who shares an update to his Sangean PR-D4W review.

The good news is that Jeff continues to be impressed with the PR-D4W and ranks it above the venerable C.Crane CCRadio-2E in almost every category. At $64.50 on Amazon, the PR-D4W is a much better value.

Follow this link to his review:

http://herculodge.typepad.com/herculodge/2015/10/sangean-pr-d4w-review-with-fm-wire-antenna-upgrade.html

Jeff gives high marks to the Sangean PR-D4W

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My pal, Jeff McMahon, over at the Herculodge, has just posted a video review of the Sangean PR-D4 portable radio. In summary, he writes:

“It’s a great radio with top FM, AM, and speaker sound. It blows away my C.Crane Radio-2E. Lack of illumination, however, makes it less than ideal as a bedside clock radio.”

Wow! I’m most impressed that Jeff places the PR-D4W (which retails for $69 on Amazon) above the venerable CCRadio-2E (which retails for $169 on Amazon) in terms of AM performance.

I just checked and it appears that Universal Radio also retails the PR-D4W for $69.95.

Follow Jeff at the Herculodge and on YouTube.

National RF 75-NS-3 receiver kit

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National RF, of California, has introduced a new “semi-kit” receiver: the RF 75-NS-3. Here’s an excerpt from the product description page of the National RF website:

National RF’s 75-NS-3 receiver is a complete super-hetrodyne mini high frequency receiver, designed specifically for the short-wave listener, electronics enthusiast or radio amateur, who wants to use their hands and build a radio. The receiver is offered as a semi-kit in which the electronic assembly is loaded and functionally tested at the National RF facility. The customer must then go to the grocery store (yes…the grocery store!), procure a can of [Spam] lunch meat, eat it or give it to the dog, and then proceed to drill and paint the can, in order for it to become the receiver’s enclosure! […] Detailed drilling instructions and final assembly instructions are provided as part of the kit. All other parts required for completion of the receiver are provided as well. Recognizing that the finished assembly looked somewhat like the fabled Collins receiver of the ‘60s, the 75S-3, (particularly when the can is painted a light gray) National RF engineers dubbed it (with tongue firmly planted in cheek, of course) the 75-NS-3! Although we have had fun packaging this receiver in a lunch meat can, it is nothing to turn your nose at! Its performance and portability will surprise you, and it is an ideal radio to bring with you on any trip!

The receiver architecture is that of a single conversion super-hetrodyne receiver, that is capable of receiving AM, SSB, or CW. The receiver incorporates a dual gate FET as an RF amplifier with manual peaking and gain controls. A ceramic filter is used in the IF section with a front panel switch that controls a broad or narrow IF response. Other front panel controls include audio drive, BFO setting, and a band switch for the HF bands. The 75-NS-3 has internal receive frequency coils that are switched at the front and rear panels. The frequency range of the receiver, over three band set positions, is 3.5 through 12 MHz. This allows reception of several international short-wave bands, the 80, 60, 40, and 30 meter amateur radio bands, and of course, WWV time and frequency standard stations at 5 and 10 MHz.

For those who simply want a lower cost receiver to monitor the shortwave frequencies, National RF offers two variants of the original receiver: the 75-NS-1 and the 75-NS-2. Both are based on the design and circuit of the 75-NS-3, but do not have the band switching and frequency range of the 75-NS-3 receiver. The 75-NS-1 covers between 3 and 6 MHz, including the 80 and 60 meter amateur band. The 75-NS-2 covers between 6 and 12 MHz, including the 40 and 30 meter amateur bands. Both units have the fixed ceramic resonator band width set for about 6 KHz. And, of course, they are both designed to fit in the tasty potted meat can!! All other specifications presented apply to both of these models as well.

Pricing of the 75-NS-x versions:

Type 75-NS-1 Mini HF Receiver Semi-kit (covers 3 to 6 MHz) $189.95
Type 75-NS-2 Mini HF Receiver Semi-kit (6 to 12 MHz) $189.95
Type 75-NS-3 Mini HF Receiver Semi-kit (band switched from 3.5 through 12 MHz in three switched positions) $269.95
Shipping and Handling to within the US $10.00 each

Click here to view on the National RF website.

Video: Stephen’s Poldhu Radio Kit

Update: Sangean ATS-405 review

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After publishing my initial review of the Sangean ATS-405 on July 25, I contacted Sangean and requested a sample radio for comparison purposes. Back story: there were some receiver performance issues that I suspected may have been tied to my particular ATS-405 unit. Sangean kindly dispatched another ATS-405 which I received last week. The following is an update to my initial ATS-405 review.

In truth, there were two main reasons I wanted another unit to compare to my initial review radio:

I wanted to see if the new unit showed improved performance–sensitivity, selectivity, and, specifically, noise floor–in comparison with the first review unit tested
I noted strong DSP “birdies” (noises) on 800 and 1600 kHz on the test model, while several of our readers commented that their ‘405s did not feature birdies

Shortwave sensitivity/selectivity and noise

I noted in my initial review that the initial ATS-405 had an ever-present noise, a sort of low-volume static hiss. The noise floor, while not high, certainly seemed to be higher than other comparable shortwave portables, and was most noticeable when tuned to marginal/weak stations. I suspect many listeners may not notice it unless they compare it with other portables.

Fortunately, my new review unit’s noise floor seems to be slightly lower than that of my initial review unit. [Perhaps this unit’s board is better soldered–?] The noise is still there, but can be better mitigated by judiciously using narrow filters and the three-position audio tone control.

I suspect this is a noise somewhere in the audio amplification chain, because I find it less noticeable with headphones, and more pronounced via the ATS-405’s internal speaker.

In terms of sensitivity and selectivity on the shortwave bands, I believe my new unit is identical to that of the initial review unit. That is to say, the ATS-405 is not an especially sensitive shortwave receiver, but fairly average, and thus will fit the bill for most but not for the discriminating weak-signal hunter. Frankly, even my $46 Tecsun PL-310ET does a better job of pulling in weak stations.

I’ve tried tinkering with the AGC settings and soft mute–very cool features!–in an attempt to improve sensitivity, but alas, these only help the quality and stability of the received signal.

Birdies

Immediately after opening the box of the new ATS-405 sample, I popped in a fresh set of AA batteries and tuned the Sangean to 1600 kHz AM. [If you read my initial review, I noted a strong DSP birdie on 1600 and (to a lesser degree) on 800 kHz].

At first listen, I was happy to note that the new unit lacks the wild DSP noise that overwhelmed my favorite local station on 1600 kHz.

As I listened more carefully, though, I did note a metronomic “chick” sound that was also present but partially buried in the noise on my initial ATS-405.

Below, I’ve embedded audio comparing the two receivers:

Initial review unit:

New review unit:

Listening to these samples, I realize I may have had the filter set to the middle position on the first sample and the wide setting on the second (hence, the brighter tone).

To further demonstrate the difference between the two, I made this short video; I start with my initial review unit, then switch to the new review unit provided by Sangean:

Note that this was recorded at least 100 feet from my house on the tailgate of my pickup truck. DSP birdies on 800 kHz sounded very much like the 1600 kHz sample, save the noise level on the latter is slightly lower and there are no broadcast stations in the background.

None of my other portables have digital noises or birdies on 800 and 1600 kHz.

So, the bad news: I do still hear a noticeable (and slightly annoying) internally-generated noise on the new review unit. The good news: it isn’t as objectionable as that on my initial review unit.

Summary

In short: I stand by my initial review of the Sangean ATS-405.

While the new ‘405 review sample seems to perform better than the initial ‘405 sample, I find the discrepancy somewhat marginal, especially since I spend the bulk of my time on the shortwave and mediumwave bands.

I’m not a fan of production runs where units vary so greatly from one to another, making accurate testing difficult. Therefore it’s quite possible you might receive a unit that performs better than those I tested…but unfortunately, the opposite is also true.

So, if you’re a Sangean fan, if you don’t mind the birdies on mediumwave, and if you mostly listen to strong shortwave stations, you may entertain purchasing an ATS-405. The keypad layout is almost identical to previous Sangean models.

To be clear, of course, this radio’s negatives above have been viewed under a microscope; the ATS-405 is not a “bad” receiver, it’s just not that exceptional. Other than the added mute/AGC/squelch features, when compared to its predecessors, it’s really not a better iteration.

In conclusion? For the $90 US price, I believe there are better receivers out there–such as the Tecsun PL-600 (which, as a bonus, has USB/LSB reception–and saves you $10, to boot).