AmateurRadio.com

During last year's fall season, VE7CA (Markus), VE7BDQ (John) and myself were getting prepared to venture into the nanowave world....that part of the electromagnetic spectrum that lightwaves of various wavelengths call home.


Over the course of many months, I had become intrigued by the lightwave experimentation being done by amateurs in the UK and particularly those being done by Roger, G3XBM. Like many of the UK builders, Roger had been building and testing simple low-power LED lightwave transmitters along with simple receiving systems. It was fascinating to follow his progress thanks to his daily blog (read his '481tHz' optical postings here) which documented every detail...both failures and successes. Even though not amateur radio per-se, to me it represented the best of what is so wonderful about our hobby and experimental homebrewing in particular. Unknowingly, Roger had me hooked and eventually I started to seriously contemplate building a lightwave system.

What finally pushed me over the building-brink was an amazing series of articles by Stuart Wisher (G8CYW) published in Radcom magazine and now available for download on Yahoo's "UK Nanowave Group". This four-part series was full of ideas, schematics and inspiration. I would challenge any homebrewer to read them without wanting to start building almost immediately! The group itself is an excellent source of circuits and up-to-date information regarding the latest activity amongst the UK amateur 'nanowavers'.


Now.... just having a lightwave system would not be much fun without having someone else to talk to. My first challenge was to find someone, preferably another ham, with whom I might be able to communicate once I had a system built and....they would need to be a homebrewer as well since none of this stuff was available 'off the shelf '. I contacted Markus (VE7CA), a very skilled homebrewer and sent him the series of Radcom lightwave articles. I did the same with John (VE7BDQ), another ardent builder and the main motivator (although he never knew it at the time) in me becoming hooked on ham radio as an early teenager. Both immediately called 'all-in'....our nanowave project was off and running!


Steve McDonald, VE7SL, is a regular contributor to AmateurRadio.com and writes from British Columbia, Canada. Contact him at [email protected].

The Adventure Tuner Kit from SOTABEAMS is an affordable small project suitable for beginners and pros who will end up with a useful wire antenna tuner. According to SB:

It’s an L network tuner – but with a difference: the L network is bi-directional to increase the matching flexibility of the tuner. Both sides of the L network can be used for the antenna or the radio. It’s got co-ax socket on both sides of the network too so it can be used to extend the useful tuning range of narrow-band co-ax fed antennas – such as making an 80 m dipole usable across the whole band.

The inductance is provided with switched inductors giving a range of 0 – 5.6 uH in 0.1 uH steps. Hyper-bright LEDs indicate antenna current to aid tuning. They are in circuit all the time to give you reassurance that your system is working at peak efficiency. The typical matching range of the Adventure Tuner is 3.5 – 30 MHz.

It looks like another swell Saturday morning project melting solder followed by radio adventures from the field and shack.

What’s not to like?

Filed under: Ham Radio Tagged: kits, news

Jeff Davis, KE9V, is a regular contributor to AmateurRadio.com and writes from Indiana, USA.

Yesterday, at this time, the bands were humming (relatively) with Skeeters, WES’ers, and WAE’ers, just to name a few. 24 hours later, during a later lunch break ……. not much of anything.  This is where I was picked up by RBN:

Larry Makoski, W2LJ, is a regular contributor to AmateurRadio.com and writes from New Jersey, USA. Contact him at [email protected].

Judy went blueberry picking this afternoon in Ashland, New Hampshire. I went along. She picked blueberries; I worked Russia, Germany, Greece, Denmark and Arizona!

I tossed a 30 foot wire over a maple branch and sat down on the grass with the KX3. What a perfect way to spend an hour. Here’s my log:

11 Aug-14 1954 14.020 RA/UY6IM CW 599 599 Russia
11 Aug-14 1957 14.032 DM200TSV CW 579 599 Germany
11 Aug-14 2002 18.071 SV2CQB CW 569 599 Greece
11 Aug-14 2008 18.075 OZ2TF CW 559 599 Denmark
11 Aug-14 2012 14.009 NN6T CW 569 599 AZ

All the DX contacts were quick exchanges, but the last QSO with Glen NN6T in Kingman, Arizona was the most fun. Glen and I actually had a QSO, and I promised to send him a photo of my operating position. He sent, “UR QRP is doing very good.” That was a relief because the bands seemed a bit shaky today.

Judy picked nine quarts of the most luscious blueberries I ever tasted. I had a great time making a few QSOs. Nice combination.

Jim Cluett, W1PID, is a regular contributor to AmateurRadio.com and writes from New Hampshire, USA. Contact him at [email protected].

When I first heard about the ARRL’s centennial operation, I was mildly curious but hardly enthused. As most know, the League is sponsoring a year-long operating event in which ops in all 50 states will be on the air a week at a time, signing W1AW/X, where “X” is the call district.

Well, it has been 52 years since I earned WAS, I thought. So I decided to see if I could work each W1AW/X state for a new certificate.

Then I decided to work each state several times each just to be sure I was “in the log.”

And as the first round neared the end (each state will be on the air for a full week at least twice during 2014, usually two states each week), I thought to myself, “Self, why don’t you see if you can work them on all modes?” I need practice in pile-up and contest operating on the digital modes and especially RTTY.

 

Suddenly, this little centennial thing has become a lot of fun and a thrilling challenge! I’ve heard other guys say the same thing. I’m way down the list on total QSOs (3000-ish somewhere) and just cracked the top 15 in my state, mostly due to my late and lackadaisical start. But now I spend far more time than I should chasing W1AW.

I have a new book due at the publisher’s, have just started a new ham radio book, have a 10-month grandson I want to teach the Morse code, I need to be getting ready for the Huntsville, Alabama, Hamfest this weekend, college football season is about to start, and…Wait!…W1AW/1 in Vermont was just spotted on 12-meter PSK31.

Excuse me. I gotta run…

73,

Don N4KC
www.n4kc.com
www.donkeith.com
(Author of the new book RIDING THE SHORTWAVES:
EXPLORING THE MAGIC OF AMATEUR RADIO)

Don Keith, N4KC, is a regular contributor to AmateurRadio.com and writes from Alabama, USA. Contact him at [email protected].

KX3 bathed in light from my red headlamp

The kids are starting back to school this week, so we thought we would get in one more family outing before life gets crazy.  So last week we went camping from Wednesday morning until Saturday morning.  Its great to be at the campground during the week – almost nobody else is there!

It rained every night – the days were hot and humid.  We spent most afternoons out on the lake in my Dads boat he loaned to use – nice and cool with lots of swimming and tubing.

Friday night I had time to play radio!  I setup the KX3 running on internal batteries on the picnic table.  Hooked up the portable QRP antenna that I lashed up to the canopy and I was off to the races.

I used my headlamp with a red light to see what I was writing and the radio controls.  This worked exceptionally well – and kept the bugs away.  I have used the white light before and it really draws in the bugs!

When I turned the rig on it was on 20 meters – I expected it to be dead since it was about 03:45 UTC (10:45 PM local) – but I immediately heard signals.  As I tuned around, I was hearing DX everywhere!

I listened to some of the exchanges, and could tell it was a contest – RST and Serial was the exchange.  Turns out it was the Worked All Europe HF Contest.

So I dove into the mix and started pouncing!  Wow it was fun….

UA7K – Russia (I think, could not find in QRZ)
UW2M – Ukraine (1,172 miles per watt)
UT0U – Ukraine (1, 134 miles per watt)
AI6O – California
K1XM – Massachusetts
UY5ZZ – Ukraine (1,115 miles per watt)
RW1A – Russia (1,091 miles per watt)
RM5D – Russia (1,091 miles per watt)
YP9W – Romania (1,139 miles per watt)
HA8VV – Germany (1,055 miles per watt)
S57DX – Slovenia (1,054 miles per watt)
HG7T – Hungary (1,091 miles per watt)
HG8R – Hungary (1,115 miles per watt)
DJ5MW – Germany (1,004 miles per watt)
SN6A – Poland (1,019 miles per watt)

I finally shut it down at 05:21 (12:21 AM local time) – but the band was still hoping.  I did tune around 40 meters and heard some signals, but the antenna just needs to be longer for good 40 meter operation.

What a blast!  Almost everyone came back to me on the first call – only 3 times did I have to repeat my call.  Everyone I called, I worked!

It was fascinating to think about working Russia and Ukraine with all the tensions in that part of the world right now – guys are still having fun playing with the radio.

I am really enjoying dipping my toe into these contests – it is a great way to work a bunch of stations – and some DX to boot.

Nick KE0ATH working 2 meters

Nick (KE0ATH) also did some operating on 2 meters using a collapsible portable J-pole that we built together.  He had a blast.  He is working on putting together a go-box 2 meter station for camping and outdoor adventures.

Be sure and check out, and subscribe to my YouTube channel – I am working on several more videos – stay tuned!

Burke Jones, NØHYD, is a regular contributor to AmateurRadio.com and writes from Kansas, USA. Contact him at [email protected].

from Tim, W3ATB.  Not only a beautiful location, but an answer to those new to portable QRP ops who are wondering, “How do they do it?”

Thanks, Tim and I’m glad you enjoyed yourself! THAT is the whole point of this event – for folks to get out and enjoy themselves (Skeeter bites, and all!).

Oh ….. I also added Tim’s blog to the blogroll. Make sure to check it out!

72 de Larry W2LJ
QRP – When you care to send the very least!

Larry Makoski, W2LJ, is a regular contributor to AmateurRadio.com and writes from New Jersey, USA. Contact him at [email protected].