AmateurRadio.com

Ironically – Building the Elecraft K3 has let me to reflect. This K3 project is special to me and has drawn some interesting questions. I have been asked by several people including friends and coworkers and some outside my family what I did on my vacation days and when I tried to explain that I was working on building a Ham Radio – Elecraft K3 which I knew they would have no idea about the brand but I always take shot at it.

The reaction has been staggering – so you are building something that is taking days if not weeks to do that you could have purchased all put together and ready to use by someone else. On top of that you are setting up camera and blogging about it. What a waste of time seems to be the consensus.

The joy of building something – anything it doesn’t have to be a Heathkit, Elecraft or even a Lego set (which I enjoy building as well) is a primal instinct for me. I like to create, build, see a result and when I’m able to use this radio on the air knowing that I had large part in the assembling is going to make me even more proud to use it.

I am capturing this memory for me, writing about it for me and I want to share with others so maybe they will consider building something whether it is this radio or not to enhance their life. Setting up a camera, editing footage, blogging and building all takes time certainly and I know over 7000 (by my serial number) have built an Elecraft K3 before me. Maybe they have done this – maybe not – maybe they will enjoy looking back at someone else’s experience. Maybe no one will watch or read…. That’s entirely possible as well… But the project is mine ☺ I will still have the memory.

Life is short and sometimes you have to savor experiences – let them burn a memory for you that you will have for a long time. This is one for me… I know I could have bought this radio built, I know I could put it all together in a day very quickly (possibility ☺) and I know some will never understand…

Nick N1IC

To see my full build story: http://nicktoday.com/elecraft-k3-and-n1ic-my-build-page-1

X1M QRP SSB/CW Transceiver Kit

I’ve been watching this little thing for a few weeks.  They showed up on the Kight Radio Store web page and after a few days, when I decided to pull the trigger, they had sold out.  Today they are back in stock, and one of them is on its way to me (hopefully).  Construction is described as easy assembly which I gather makes it similar to the KX3 kit.  Here are the features and specs from Kight Radio:

Transceiver: X1M [v2.01] 
Frequency range: 0.1 ~ 30mhz transceiver;
Modes: ssb / cw
Power output: 5 Watts (max);
Operating voltage: minimum 9.6v (dc), max 14.5v (dc);
Operating current: 0.35a (min), 1.2a (max);
Preamplifier;
Memory 100 channels ;
RIT function;
Automatic internal CW keyer
Back-light  on/off
Keyboard can be locked;
Dimensions: 97 * 40 * 155 (mm)
Weight: 0.65
Receiving sensitivity: better than 0.45uV
Frequency stability: better than 0.5ppm
Frequency accuracy: better than 0.5ppm (boot 5 minutes)

An interesting additional feature says this equipment can be connected to HAM RADIO DELUXE software.  The user can choose any ICOM equipment, but the IC-718 is recommended.

The text also states that the version they are shipping to the USA is set up to transmit only on the Amateur bands.

I’ll let you know how it goes.

RoIP stands for Radio over the Internet Protocol and you can use this technology to connect remote radios over any distance, easily.

There are, of course, very complicated and elegant communications systems that do this already such as Echolink, D-STAR, Tetra and DMR/Mototrbo, but tonight I homebrewed my very own, modest private link in half an hour – and you can too!

If you have a rig with a packet data port and an external sound interface, such as a Signalink USB, then all you need is some software and a mobile phone, for example.

Above: Signalink USB and FT-817 set to 2m FM calling….

I used a fantastic free app called Zello. Zello is a walkie talkie emulator for your smartphone but also has a PC programme counterpart. The clever bit is that it has a VOX function with several adjustments for sensitivity and delay. My project enabled me to talk remotely over 2m using my smartphone!

Above: Zello app ‘PTT’ button

So, by pressing ‘PTT’ on my smartphone and making a direct call to my computer, the VOX switch was activated on my Signalink USB interface and my FT-817 transmitted. When the squelch was opened on my ‘817 by the station I was talking to (and this is the clever bit) the Zello programme on my computer used its VOX feature to transmit back to my smartphone.

 

 

 

 

 

 

 

 

Above: Zello VOX settings on PC and  Zello GUI on Windows XP

Now I know that Ham Radio Deluxe can be established to give full remote control over my rig, but that’s for another day. This is one solution to automatically link two radios that anyone can do.

This afternoon Hanz, W1JSB and I met at the Franklin Falls Dam. Our plan was simple… lift a half wave wire with a kite and work some DX on 20 meters. We managed to work Belgium and the Ukraine… but it wasn’t all clear sailing.

We sat at a picnic table several hundred feet above the river. A stiff breeze lifted the kite about 80 feet into the air. We attached the far end of our 33 foot wire to a loop in the middle of the kite string. We connected the near end to the Par matchbox and then to the rig… an HB-1B running 4 watts. It wasn’t vertical, but it was a respectable sloper.

After a few calls, I worked ON8VP in Belgium. Peter gave me a 559 and we finished a quick exchange. His signal was strong, and I have no doubt that had the wire been vertical, I would have been stronger to him. But I was pretty happy to make a contact.

Next, I heard UY6IM in the Ukraine calling CQ. As the wind faltered and the kite lowered, Roman answered my call and gave me a 559. Then it happened.

The kite dropped below the hillside and most of the wire lay on the ground. Roman couldn’t hear me send his report. Fortunately, he didn’t hear me swear either. Darn it… (OK… Dam it.) Hanz raced down the hillside to recover the fallen kite. Right away it lifted into the sky again. By this time Roman was calling CQ again. I answered… gave him a 599 and called it quits after he acknowledged the report. Right after that, the kite dropped once again. It was frustrating.

Hanz wanted to give it a try, so I ran down and tried to get the kite airborne once again. No luck. We packed up. Of course, as soon as we did, the wind came up again. The experiment was fun, but I think I’ll stick with trees.

Hanz W1JSB and I hiked down to the Pemigewasset River today. It was our first radio outing of the year… and it was fantastic! We worked Germany, Romania, Slovak Republic and Wisconsin.

We walked down the steep hill into the Corps of Engineers flood control area along the road. In the winter it’s used only by snowmobiles, cross-country skiers and sometimes horseback riders. The snow is just starting to melt. We’ve had two days in the mid-40s. The brook is showing signs of life. It’s grand.

We walked in about a mile and turned toward the river into a field. We found a little bare spot of ground near some bushes and decided to set up there. I flung the water bottle with the antenna line into a tree and Hanz pulled it up.

We used the HB-1B at 4 watts on 20 meters with a 33 foot end fed wire. I took the first turn and right away heard OM1ADX calling CQ. Martin in the Slovak Republic had a beautiful signal. He gave me a 559. Hanz made a video of the QSO.

View it here.

After that, Hanz took over. He worked two stations in a row toward the lower end of the band. First he called DL6LBI in Germany. Ingo answered him right away and gave Hanz a 579. The Wisconsin QSO Party was in full swing so there were plenty of WI stations for the asking. Hanz worked K9LGU. The really interesting QSO came next.
Hanz went up to 14.060 and heard a very weak station calling CQ. It was Catalin in Romania… YO8RIX and he was only running 500 mw with a K1 and a loop antenna. Amazing.

It was so much fun to get out in the warm sunshine and operate again. The winter’s been long. On the walk back Hanz and I talked about some of the places we plan to hike to with our radios this summer. There will be lots of good exercise and radio expeditions ahead.

Graphene Supercapacitor

This is a small article I wrote for our office newsletter.  Major implications for portable Amateur Radio equipment and emergency communications.

Batteries.  They have become a huge part of our everyday lives.  Think of how many devices we use that need to be recharged regularly.  Cell Phones, iPads, laptops, digital cameras, cordless vacuums, electric razors, and now cars too.  Tesla and other pioneers in the electric car industry are slowly moving toward technology that resolves a lot of the capacity issues in their devices, with some models now reaching a 300 mile range.  The iPhone has become another great example of what engineering can do for battery capacity, with newer models able to go for a day or more between charges with normal use.  Capacity is no longer the issue it once was.  Charging time is now what’s holding battery technology back in applications like cars, industrial machinery, and tools.  Even using one of the Tesla Superchargers takes about 30 minutes to charge a Tesla S to 50 percent capacity, and most cell phones still take an hour or more for a full charge.

The answer to this problem may lie in a substance called graphene.  Graphene was invented in 2010 at the University of Manchester, UK.  The two scientists who came up with the process were awarded the Nobel Prize in Physics.  Graphene is a single layer of carbon, forming a thin sheet, one molecular layer thick, and has amazing properties both physically and electrically.  Graphene is extremely conductive, and shows promise in the field of electronics, helping to create faster and smaller semi-conductors, as well as many other practical uses.

The original method to create graphene is extremely low-tech, and not very practical.  The Scientists at the University of Manchester were able to pull a single layer of carbon molecules off of a piece of graphite by using Scotch Tape.  This proves to be impractical on a large scale though, and a new method was needed.  Last year at UCLA, researchers found a way to make graphene out of graphite oxide dispersed in water using low powered lasers.  The lasers they used however, were the ones in an ordinary DVD burner.  By coating a DVD with graphite oxide, and burning it on the label side using LiteScribe technology, they were able to create sheets of graphene, opening the door to a cheap method of creating this substance.

The real surprise came when one of the researchers attached a square of graphene to a light bulb, and managed to keep it lit for 5 minutes, after a charge time of only a few seconds.  What they had stumbled on, was a new way of creating something called a super capacitor.  Capacitors store electricity like batteries do, but charge and discharge rapidly, sometimes many times a second.  A super capacitor combines the properties of both a battery and a capacitor, giving us a component that can charge rapidly, but behave like a battery once charged.

Thanks to the new method of creating graphene, this technology is closer to reality than most.  Imagine being able to recharge device in seconds instead of minutes or hours.  The possibilities this brings to the computer and auto industries are fantastic.  It also opens up the idea of cordless, rechargeable devices to a host of new industries.  Keep an eye on this, as it is going to change the way we look at portable devices, and energy storage.