Category Archives: Kits

Ramsey Electronics discontinues Hobby Kit Group

Ramsey-KitRamsey Electronics recently announced the following on their website:

ramsey-logo-tinyFor more than 4 decades, the name Ramsey Kits has been synonymous with some of the neatest and the greatest electronic products and hobby kits for the do-it-yourself hobbyist. In those 40+ years, we always thought “outside the box” when we designed a new kit, making us known worldwide as the number one hobby kit manufacturer.

Back in the early 70’s it all started with the infamous “LED Blinky Kit” as our first kit. As the standard first kit sold to schools, scouting groups, and individuals, that one single kit became the very first electronic soldering kit experience for hundreds of thousands of hobbyists. And from that very first kit with only 10 components in it, the 16 page manual was written to delve deep into the circuit to cover how and why it works, in a fun and very easy to understand format. This practice followed over all these years, some 311 products later, earning us praise from everyone from teachers, educators, and engineers, to school children, scouts, and do-it-yourself hobbyists.

While our Hobby Kit Group was busy churning out the kits and products you’ve become so familiar with, our Professional RF Test Equipment Group was busy achieving similar milestones in that industry. From the largest manufacturer of RF pager test equipment, the world’s largest pager test training school, the world standard for cost effective communications service monitors, to our patented RF Isolated Test Enclosures, Ramsey Test has become equally synonymous as the most trusted RF Test Enclosure manufacturer worldwide.

The rapid changes in technologies have made it difficult for the do-it-yourself hobbyist. You just don’t go out and build yourself an 802.11ac wireless router these days! You buy one at the corner big-box store for fifty bucks! One of my favorite kits I personally built was a 25” Heathkit GR295 color TV! It was considered ahead of its time for TV’s, and you had to build it. You just can’t do that today either.

Therefore, following our well respected predecessors like Heathkit, KnightKit, Eico, and others in the past, we are discontinuing our Hobby Kit Group January 1, 2016.

We are extremely proud of our 4 decade heritage of being the leading hobby kit manufacturer worldwide, and consider it an honor that we helped hundreds of thousands of hobbyists make their entry into electronics. We end our heritage with a smile, not a frown, and say thank you, to all our customers and fellow hobbyists.

For our existing Hobby Kit customers, for hobby kits purchased through the end of 2015, our premier tech and warranty support will continue as usual throughout the 2016 warranty period.

To help our Hobby Kit customers obtain some great deals in remaining hobby kit inventory, it has been relocated to Amazon’s fulfillment warehouses, and may be purchased directly at Amazon where you can take advantage not only of low close-out prices, but of their free 2nd day delivery with your Prime membership. The Ramsey Test RF Test Equipment Group is unaffected by this change, and remains to be the leader in RF isolation test equipment throughout the wireless industry.

If you came to this page looking for Ramsey Kit products, we urge you to check with Amazon, you will find some great deals.

If you have any questions or comments about the end of our Hobby Kit legacy, feel free to use the email response form below.

Once again, we feel honored that you trusted Ramsey Kits over these past 4 decades to learn about electronics. All of us in the Hobby Kit Group urge you to continue your pursuit. Some of the nation’s top electronic engineers, scientists, and entrepreneurs started by learning and building hobby kits… pass it on to your kids!

Best regards,

The Ramsey Electronics Hobby Kit GroupRamsey Electronics® | 590 Fishers Station Drive Victor, NY 14564 | 800-446-2295

Click here to search Amazon for Ramey Kits.

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DIY Kit for Aircraft Band Monitoring

Aircraft-Band-RadioThere is an interesting kit being sold on eBay designed specifically for aircraft monitoring of 118-136 MHz (meaning it could also cover a number of ACARS frequencies). The receiver is being sold as a DIY kit, a completed kit, or an assembled kit and enclosure. Prices range from ~$16 to $38 plus shipping from Hong Kong. I purchased a kit and enclosure, as building it is part of the fun for me. I will let you know how the construction goes and how the receiver performs after I get the kit together. Delivery time is estimated to be between 2 and 3 weeks, typical of things coming from Hong Kong.

Here is a picture of an assembled board:

swl-aircraft-kit

If anyone has experience with this kit let us know your results!

Robert Gulley, AK3Q, is the author of this post and a regular contributor to the SWLing Post. Robert also blogs at All Things Radio.

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Dave’s Sproutie SPT Beacon

The Sproutie “SPT” Beacon. (Photo source: Dave Richards)

The Sproutie “SPT” Beacon. (Photo source: Dave Richards)

Dave Richards (AA7EE), has just published a brilliant post about his new beacon: the Sproutie SPT Beacon.

Click here to read Dave’s post with detailed instructions for building your own
low power, legal beacon
!

Dave’s beacon is located on 13,558 kHz–he would love your reception reports. Dave notes in his post:

“If you hear the SPT beacon on 13,558 kHz, please send a report – either to the e-mail address listed on my QRZ account [look up call AA7EE], or as a comment underneath this post. Reception reports will be very eagerly received. One gentleman in Seminole County, FL, reported that the area around the SPT frequency was a cacophony of noise in his area, and he stood no chance of hearing it. Those kinds of reports are useful too.  If you put your own HiFER beacon  on the air, do introduce yourself on the LWCA message board, and John can include you on the list of known active HiFER beacons.

Readers: let’s give Dave some reception reports! Though I live on the opposite side of North America, I will certainly be listening!

Dave, thanks again for publishing such an informative and detailed post! You’ve inspired me to build my own beacon.

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New kit by NM0S: the 4S-Tuner/Antenna Coupler

4stuner_panelDave Cripe (NM0S) has designed yet another QRP kit for the 4 State QRP Group: the 4S-Tuner/Antenna Coupler.

Description (per Four State QRP Group):

This excellent random wire antenna tuner is the classic T-Match design which is known for wide matching range and smooth operation. Dave has added a nice wrinkle – the SWR indicator employs TWO leds, not the normally seen single red LED. A green one indicates output power with a red one indicating reflected power. The beauty of this arrangement is that the operator sees the output power peaking as the SWR goes down, just like a power meter with dual meters – very intuitive. This makes tuning easier and leaves no doubt that it’s tuned for maximum power output. For a high SWR the red LED is at full brightness and the green LED is off. At 2:1 both are at equal brilliance. At 1:1 the green is full on and the red is off. The small size is perfect for portable operations. Add this dandy little tuner to your portable ops go bag, or use it at home. It’s equally at home on a picnic table, in a tent or camper, as well as on the operating desk in your shack.

Specifications and Design Features

  • Wide tuning range: 80 meters thru 10 meters. Tested on EFHW and 100′ wire.
  • Maximum Power Throughput: tested at 10 Watts.
  • Low loss large toroid
  • Twelve taps for small inductance step selection.
  • Low insertion loss when matched.
  • Enclosure Size: 3″x3″x2″.
  • Pittsburg Construction.

Shipped price is $51.00 (US), $55.00 (Canada), $60.00 (Outside US/Canada).

Dave Cripe designs excellent kits for the ham radio community; they’re easy to build, fun and functional.  If this kit is as popular as his past kits, the first run will most likely sell out in short order.

 Click here to check out the 4S-Tuner/Antenna Coupler at the Four State QRP Group website.

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

HeathkitExplorerJr

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.

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National RF 75-NS-3 receiver kit

NationalRF-75-NS_2

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!

75-NS_3

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.

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Video: Stephen’s Poldhu Radio Kit

Radio-Kit

Many thanks to SWLing Post contributor, Stephen Cooper, who recently shared a video on the SWLing chatroom:

I’m a sucker for cute radio kits, so I purchased one of these from the UK-based seller on eBay as well. There are two kit packages: one with the receiver only, another with the receiver, amplifier and speaker. Shipping is free–even to the US–and pricing is fair (19 – 25 GBP or roughly $30-38 US)

Click here to search eBay.

Readers: if you haven’t checked out the SWLing chat room, I would encourage you to do so! There’s almost always someone there and, many evenings, readers share reception reports in real time. Click here to check out the chat room.

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