Category Archives: CW

Video: Tuning the Ten-Tec Argonaut VI

As Ten-Tec was setting up at the Dayton Hamvention last Thursday, I was able to meet with their engineer (John Henry) briefly and had a little time to play with the new Model 539 Argonaut VI. As I tuned around the CW side of the 20 meter band, I recorded a short video. I’m sharing this with you here, but must ask your forgiveness for its quality and glitches; I want to make it clear that this material was recorded on my Android phone in some haste.

Moreover, this video does not do justice to the Argo VI’s audio, which is exceptional.  In fact, I can’t tell a difference between its audio and that of the Ten-Tec Eagle, both of which have very low noise floors and simply gorgeous audio fidelity.

Now, just a small taste of what this receiver can do…

Thoughts on the Elecraft KX1 and comparing with the Ten-Tec HB1B

My Elecraft KX1

I’ve been meaning to write a post about my Elecraft KX1, because, of all of the rigs I own, it’s the most-often-used, thus the clear favorite in my stable. But:  this morning, I read John Harper’s (AE5X) excellent assessment of the Elecraft KX1 vs. the Ten-Tec HB1B. He provides some significant numbers to consider when comparing these two lightweight CW-only QRP rigs, and makes a great case for elevating the newcomer HB1B over the KX1–at least, for some readers.

I’ve had my Elecraft KX1 for over three years, and, in all honesty, absolutely love it.  But, let’s face it: if I didn’t have one, if I had never touched nor used one, I would be seriously tempted by the HB1B–for its price, for the fact that Ten-Tec sells it (I’m a long-time Sevierville radio fan), and for the fact that it’s not a kit. Oh, yeah:  and because it works very well.

However, having used the KX1 for so long, I know that the HB1B (at least in its current state) could not replace my KX1. But before I explain why, I would like to make some strong points in favor of the HB1B.

YouKits HB1B Four Band QRP Transceiver
The Ten-Tec HB1B

The Ten-Tec HB1B

At least on paper, the HB1B has better filtering, a better display, and generally speaking, more bells and whistles than the KX1. Best of all, it comes fully assembled.

Why is this last point an advantage–? For a number of talented QRPers reading this, building the kit is the best part!  I know, I get it…And to tell the truth, I want to be like you kit-builders out there!  But I am only now getting into kit building, and building my confidence in kit-building.  I’m sure there are many others out there like me. For these QRPers, please note: the KX1 is not a beginner’s kit. I did not build mine. When I bought my KX1, I purchased it from a KX1 beta tester and professional engineer. The soldering and overall build quality are top-shelf.

Moreover, no matter how great an Elecraft radio is, it’s only as good as the person who built it. If the builder does sloppy work, your rig’s longevity and performance may suffer. Since you’ll likely be taking the KX1 with you everywhere, and it’ll experience a fair amount of movement (aka, hard knocks), this is especially important.

If, like me, you’re not prepared to take on building a KX1, fear not!–you should simply purchase from someone who knows their stuff: Elecraft can suggest some builders (including the amazing Don Wilhelm, W3FPR) or you can simply purchased a used KX1 fully-assembled. Or, you can simply purchase the fully-assembled HB1B.

So, why do I not find the HB1B enticing?

Yes, the Ten-Tec HB1B comes ready to roll. Still, could it replace my KX1?  I don’t think so. Two HB1B deal-breakers for me:

  1. As AE5X mentions, there is no internal antenna tuner option.
  2. There is no way (at least, on this version) to attach paddles directly to the rig.

Portability + Simplicity = QRP Fun

Why are these features so important? Well, my KX1 has an ATU, four bands, and an attachable paddle. One of my favorite things to do with my KX1 is, while traveling, to pull it out of its Pelican case, toss a 28′ wire into a tree, and lay a ground wire. As I stand there, I can hold the KX1, tune the antenna (easily 40M and up, with the internal ATU) and work stations my favorite way: while standing up.  I can also (if I like) sit for a moment, then jump up again, walk a bit, and generally move freely–just not possible with sit-on-a-table units.

My Elecraft KX1 fits nicely inside the Pelican 1060 case. There's even room to fit an external Whiterock paddle.

Additionally, everything I need fits inside a Pelican 1060 case. The Kx1 itself is an all-in-one unit–nothing external to attach, unless I want to. Oh, and I can also operate the KX1 with gloves on in below-zero conditions.

Anywhere QRP

Why would I want to operate standing up? Fact is, where I go, I’m only operating for thirty minutes or so, and in places where there’s no convenient spot to settle down or get too comfortable. In many cases, I’m operating on a whim–when I can grab a few minutes in a busy itinerary, or on a hike or day trip. With the Kx1, this is remarkably easy to do. I can have my KX1 on the air in four minutes or less, in most cases–and that includes the time to hang a wire–!  Packing up is also quick. This kind of operation feels as free as flying a kite.  Spontaneity at its best.

Part of that functional synergy comes from the fact that there are no additional components to hook up (i.e., no external tuner, external paddles). With the HB1B, I would be forced to either build a set-up, so that I could stand and hold the transceiver, tuner and paddles, or I’d have to…sit down.

Wayne’s inspiration for the KX1

Thinking back to a Dayton Hamvention several years ago, I seemed to remember that Wayne Burdick, N6KR (co-founder of Elecraft) was inspired by just this sort of off-the-cuff operation. To confirm this, I asked Wayne, just this morning, if I was on track with that. He offered this very thorough (and insightful) response:

I had been designing portable QRP gear for my own use for many years, including the “Safari 4″ (documented in three issues of QEX magazine in 1990). The Safari-4 was 3x5x7”, but it was fully self-contained, including an attached keyer paddle, internal 1-Ahr gel cell and manual antenna tuner, wattmeter, SWR bridge, and 4-band coverage. But it was too large for backpacking. Later, I designed some far smaller rigs with very good performance for NorCal and Wilderness Radio, including the SST, NC40A, and Sierra.

Then I started Elecraft with Eric, WA6HHQ. After we had success with the K2 and K1, I pitched the idea of a smaller version of the Safari-4 to Eric.

There were two inspirations for this. Back in the 70s, W7ZOI (Wes) created his “Mountaineer”, which was a crystal-controlled 40-m QRP rig that was very simple to use, very small, and self-contained, in that battery and paddles were built in. But it had no VFO, no ATU, a single band, and no frills. Taking what we’d learned in the K2 and K1 designs, I figured we could pack a great radio into this same size using updated technology. It had to cover at least 40 and 20 meters, and the idea was to use latching relays to minimize current drain and simplify band switching. We also used a DDS chip for the VFO–not quite as pure as crystal control, but just as stable, and totally adequate for a portable radio.

The other inspiration was my idea for an attached, but easily removable and mechanically reversible, keyer paddle. This became the KXPD1. I literally woke up at 5 AM with this idea. I realized immediately that this was the enabling technology for a hand-held radio, and I got busy with the design.

Having spent time camping and hiking with other rigs, I also knew that the ATU had to be built in. This allows the use of ad-hoc, wire-in-a-tree antennas, which is the secret to quick setup. It was a challenge creating an ATU that’s just 1 x 5″, but it worked. We spent weeks refining the rig and the ATU to work with typical field antennas, adjusting the component values to cover 40 and 20 meters. When we added the 30-m module, we found that it handled this well, too.

Most of my KX1 operation involves not even sitting down. I literally stop on the trail at a scenic overlook, pull the daypack around and extract the rig, toss a wire into one or two trees, and I’m on the air. I love this kind of operation. I’ve gone so far as to operate while sitting in a tree (an “inverted vertical”–a dangling wire–works amazingly well). Having to futz with add-ons can be fun, too, but it discourages “instant” operation. I like to quote Ade Weiss, W0RSP,  from his book The Joy of QRP: “If there is a place, and you can get to it, you must operate from there.”

You can’t overlook performance and features, either. The KX1 is stable in all operating environments and draws only about 35 mA. It includes a variable-passband crystal filter that can be widened out to copy AM and SSB signals, and can even do cross-mode (transmitting in CW while receiving LSB or USB). It has a full set of frequency memories and CW message buffers. For blind hams (or when you’re too tired to keep your eyes open), the KX1 has a 100% Morse-audio-feedback system. I tested this firmware with my eyes closed, and the result was very well-received by the blind amateur community.

Thanks for the history, and your inspiration, Wayne. Love it!

The KX1's Tuning, RF, AF and Filter knobs are very easy to operate--even with gloves on!

When you hold and operate the KX1, this legacy is all too apparent. Thoroughly thought through–down to a built-in LED lamp for logging–and, without a doubt, the original inspiration for several radios that followed: the HB1B, the MFJ 92XX series, and the Hendricks PFR3.

My guess is that the next generation of HB1B will have some of these clever features.

In the meantime, if you’re in the market for an inexpensive, CW-only, very portable QRP rig, and you’ve no plans to embark upon impromptu operation, the HB1B could be your rig. Based on my experience with Ten-Tec, if they sell it, they’ll give you excellent customer service. That is the beauty of these two choices, both Elecraft and Ten-Tec are excellent companies to do business with.

I only think I’d give up my KX1 for…the new KX3, and I’m not even convinced I’d do that, yet. The KX1 has become my little travel buddy. Time will tell, though. Check back here–if I’m wooed by another QRP radio, I may eat my words.

By the way, as I mentioned at the beginning of this post, the inspiration to finally write down my thoughts on the KX1 came from John Harper (AE5X) who has an excellent QRP blog that you should certainly add to your favorites!  And thanks, again, to Wayne, both for his response, and for his original ideas that continue to make QRP so liberating.

Andy’s 6N7 Tube QRP Amp

In this Glowbug Times article, Andy shows us his very cool homebrew tube amp. Andy shares his motivation:

Once upon a time I’d decided to join a Big Guns Gang and made a Super-Duper Powerful Vacuum Tube QRP amplifier for my 800mW QRPP homebrew telegraph vacuum tube transceiver “3T” (I promise to write a separate article or two about this three tube transceiver project later). It was not an easy decision to me because for that legendary time I’d almost a year used the QRPPpower of less than a watt[…]

Read Andy’s full article here. Make sure to browse the many other articles he has published–his attention to design detail is simply inspiring.

Try your hand at Straight Key Night (SKN)

Photo courtesy: ARRL

For many, the CW event of the year is Straight Key Night (SKN). This is the time of year that you dust of the straight key and hit the bands with fellow hams who are using the most time-honored tradition  for sending CW.

Regardless of your sending and receiving skills on CW, SKN has a lot in store for you. Since this is a non-contest event, fellow operators are more patient with making contacts and more likely to rag chew. For many, this is the first time they’ve used their straight key since the previous year’s SKN, thus CW speeds are more comfortable for the novice across the band.

Straight Key Night is held every January 1 from 0000 UTC through 2359 UTC. 

The ARRL has a great article about SKN–check it out and get pumped for a full day of straight key bliss.

Elecraft now accepting orders for the KX3

The Elecraft KX3

It appears that Elecraft is now accepting orders for the KX3 QRP tranceiver that we first mentioned on QRPer.com during the 2011 Dayton Hamvention. Order are expected to be shipped in February 2012.

The kit version of the KX3 will be priced at $899.95 US, while the factory assembled and tested version will sell for $999.95 US.

Here are full details from an email via Elecraft’s Wayne (N6KR) and Eric (WA6HHQ):

Some of the [KX3] options can be ordered now, while others (including the internal 2-m module and 100-W external amplifier/ATU), will be available later this year.

The basic KX3 includes:

  • 10 watts output typical (13.8V) on 160-6 meters. (Up to 5W using internal batteries)
  • All modes (SSB, CW, Data, FM, AM)
  • Many features from the Elecraft K3, including the same full-size LCD
  • Advanced DSP features, including PSK31 and RTTY text display, noise reduction, auto-notch
  • Built-in 8-AA-cell battery holder
  • USB serial cable for firmware upgrades and for use with logging/contesting software

Available options include:

  • KXPD3 precision attached keyer paddle
  • KXFL3 dual-bandwidth roofing filter module for SSB/CW/Data modes
  • KXAT3 internal wide-range automatic antenna tuner
  • KXBC3 internal NiMH battery charger
  • MH3 hand mic with UP/DN VFO controls
  • RS232 control cable (optional replacement for supplied USB cable)

In addition, a custom-designed KX3 dust cover is available (please contact ElecraftCovers@gmail.com ).

Delivery of both the basic KX3 and options subject to availability. As always, we invite suggestions for new features, improvements and accessories.

For more information ontheKX3, including pictures, specifications and videos, see our KX3 Page: http://www.elecraft.com/KX3/kx3.htm

NAQCC Sprint Tuesday Night

The NAQCC Sprint is a monthly event that caters to the CW veteran, the CW newcomer, straight key and bug fans. All are welcome to participate (this includes QRO); but you must use QRP power levels to compete for awards.

The sprint will be held Wednesday, October 12, 0030-0230Z (Tuesday PM, EST).

For rules and general information, please check the NAQCC’s website.

The NAQCC has a great newsletter and monthly events open to all. You can join the NAQCC for free–for life–by visiting their membership page!

Ohio QRPers take break from Field Day to smoke some texters

In the spirit of a segment from The Tonight Show with Jay Leno which aired in 2005, Marion County, Ohio, amateurs staged a face-off between CW operators and local texters to draw public attention to their 2009 Field Day event.

And it worked.

Mind you, neither CW op [my good friend and fellow RAT, Mike Hansgen (K8RAT) and Bill Finnegan (NR8I)] knew the event was taking place and thus, did not practice beforehand.

Read the full article here.

The perfect key to use when you’re in a pinch.

I think this homebrew key by Laurent Dumas (F8BBL) is simply amazing. It’s portable, easy to make from spare parts lying about the house and can serve you well if you’re in a pinch. (Sorry, I just can’t use this pun enough).

Admittedly,  I think there would be some serious operator fatigue if you tried to use this key in a contest. But for emergencies–it certainly fits the bill!

If you can’t see the embedded video below, simply click this link.