Ontario Hamfest yesterday

Glad I went to the Ontario Hamfest yesterday — I won the Superprize! It is quite super; it’s an ICOM V80 2m HT. Built like an absolute tank; it feels heavier than my Kenwood TH-D72. Thanks to Burlington Amateur Radio Club for organizing the event, and to Radioworld for donating the prizes.

(If I want to get a little grinchy on this, the prize ticket said it was going to be a V82, a much pricier dualband HT, but hey! a free radio …)

It was an enjoyable event, if small by comparison to Hamvention, but then, everything is. Was pleased to see an Arduino/µC vendor at the show – Bill, of Aztec MCU Prototyping. Bill had some of his Omega MCU Systems boards for sale, which mostly feature ZIF sockets for rapid prototyping. I bought the Arduino-compatible (in software, if not pinout) Omega-328U board, and the PICAXE-based D-Axe. So that means I have even more types of µCs to learn!

One year of amateur radio: what works

So I’ve just got my digital mode setup working again. It seems that somewhere, somehow, a driver for the SignaLink USB decided to stop working, and at best I got no signal on transmit and a very very quiet one on receive. Now my mind’s back in radio mode, I realise there’s a ton of stuff I’ve bought and found to be of variable utility. This is the good stuff:

  • Rigblaster Pro: this audio interface is far larger and far more expensive than it needs to be, but I got it used for a good price. Coupled with a $3 (!) USB sound card, it makes a sensitive and controllable sound device. I think I now prefer serial PTT-controlled audio interfaces to the SignaLink’s vox-style “Make a noise and I’ll transmit it” mode. It means you won’t accidentally tx system noises. That’s worth having another USB cable lurking about.
  • LDG autotuner: because of the wild and pointless diversity in radio interfacing, LDG makes a bunch of autotuners for specific radio models. Mine just works, and will tune my mini-G5RV from 10 to 80(ish) metres.
  • Big external meter: a cheap LDG meter is way better than the fiddly bar graph on the front of my FT-857D. I have it set up for signal on receive, and perhaps slightly unusually, AGC on transmit. Since I have a tuner and run almost entirely digital modes, it’s important that my signal doesn’t distort, so seeing AGC and being able to tweak it is important.
  • Heil Pro-Micro headset: this is comfy, and keeps the family sane. I have the footswitch too, which really helps to run nets.
  • Quarter-wave dual-bander HT antenna: The rubber ducks that all my HTs have are a bit rubbish. A simple replacement antenna allows me to talk through fairly distant repeaters from my sheltered back garden.
  • WinKeyer USB: I’m just starting morse. The WinKeyer kit was so well put together it was a delight to build, and seems to be an utterly sound keyer.
  • Fldigi: the digital mode program. Reliable, full-featured and free. It basically runs all the time on my shack computer.
  • Chirp: I can program all my HTs and my HF rig with this. It’s truly great, and miles better than proprietary programming software.
  • PSKReporter: a few minutes after calling CQ, I can see where in the world I’ve been heard. This automatic reverse-beaconing site is magic, and I’m amazed that a lot of digital users don’t even know it’s there.

My one annoyance about having a Linux-based shack is that ham radio is still very stuck in using serial ports. None of my computers have hard-wired RS232 ports, so I rely on USB serial adapters. These mostly work well, but Linux has a habit of shuffling the allocations around, so what was /dev/ttyUSB0 controlling your rig today might be ttyUSB1 tomorrow. You can get around this (if the software supports it) buy using long serial device names from /dev/serial/by-id/, which don’t change. They don’t change, that is, unless you have two Prolific serial interfaces that don’t have serial numbers set, so I can only have one attached at a time. Annoying.

confuzzled: fldigi seems to be interfering with itself …

Fldigi used to work fine, but recent updates may have caused me to drop off the face of the (radio) earth. What it seems to be doing — and I don’t find this at all plausible — is causing interference with its own audio stream when its window has focus, but receiving perfectly when the program window is hidden. As Fldigi is a highly interactive program, this is not much use.

Here’s an audio sample showing what I mean: fldigi-psk14070-VA3PID-201206092107z. It’s about 45 seconds long, a sample of the 20m PSK31 band this afternoon, and comprises:

  • 0-15 seconds: fldigi’s window is in focus. None of the traces in the waterfall resolve to meaningful text.
  • 15-30 seconds: I changed focus to another program. The waterfall traces snap into focus; QSOs become readable. The conversation at 2383 Hz goes from line noise to a very clear “…  73 73  Jim and thanks for ans[w]ering the cq …”
  • 30-45 seconds: fldigi’s window is back in focus, and all decoding is cut off.

I’m running fldigi 3.21.43-1~kamal~precise from the Ubuntu Amateur Radio Software Updates repo. Hardware is a Thinkpad R51 (a bit old), latest Ubuntu 12.04 LTS, a FT-857D into a Signalink USB, and the audio’s being handled by PortAudio. I’m stumped!

Update: It was a volume thing. Linux had decided that I didn’t need my main system volume above 10%, so fldigi was picking up noise only.

knock yourselves out, guys …

I’m not quite sure why anyone would want to use the sort-of Arduino-compatible HamStack — billed as a microcontroller platform especially for amateur radio operators —in preference to developing amateur radio applications for Arduino, but chacun à son thingy. The PIC-based [I'd link to the PIC info page, but Microchip is giving me an internal server error] platform may have a few more IO pins than the stock Arduino, but:

  • development tools are expensive
  • there’s no cross-platform support
  • no direct USB support, either.

Some folks may already have gone to the expense of a PIC-based toolchain, but for beginners, it could be prohibitive. Maybe better to develop and improve radio applications for Arduino.

signals

Built a simple Function Generator with Frequency Counter over the last couple of nights. It’s pretty basic — 0-~500kHz, 0-12V, Sine or Triangular waves — but good enough for my test needs. The frequency counter is basically an Arduino repackaged to feed the attached LCD. The counter isn’t super accurate, but is within 1% of what my multimeter says.

The kit has a fairly high voltage requirement for DC (>= 15V), but this was solved by a quick trip to Active Surplus. $11 bought me a 15V power supply (which delivers around 19V open circuit) and the right kind of barrel jack.

(Talking of neater meters, I didn’t know mine could support the Bluetooth Adaptor reviewed here. Dad’s old Avo couldn’t do that!)

silly scope

It is a truth universally acknowledged, that a single ham in possession of a good fortune, must be in want of a oscilloscope. At Hamvention, I bought slightly more of an oscilloscope than I needed, a Rigol DS1102E.

After calibrating the probes, I cast around for something to measure. Aha! There lay an Atari Punk Console (previously) ready to show the world what its waveforms look like.

Surprsingly clean output here.

Ahh, the notorious APC “squelch-fart” noise. The poor little speaker hasn’t a chance of reproducing this, so it collapses into spasms.

A noisier high frequency signal from the APC.

The Rigol is pretty easy to use. These images were captured via its USB screen dump feature; no need for an oscilloscope camera here!

Hamvention 2012

So I went to Hamvention for the first time. I knew it was a big deal when I tried to book a hotel a couple of weeks before, and everything within 25km was full. Even my dodgy distant motel was full of hams, and the Perkins next door couldn’t handle the breakfast rush.

Hamvention is huge. Radio amateurs from all over the world come to Dayton to meet, look at the shiny new stuff, buy things they can actually afford, and paw over the junk valuable items in the fleamarket. The fleamarket’s the size of a small European country.

One obnoxious item I must get out the way is the amount of anti-government sloganeering on trucks, shirts and hats. I could do without that. For a hobby that wouldn’t exist without strong government regulation (and users sometimes go crying to government when someone doesn’t play by the rules), anti-government sentiment seems inane. Okay, that’s my rant over.

The fleamarket is basically where a lot of things that really should be snoozing away the millenia in a landfill come out every year to get aired. Sure, there’s some neat stuff in all those stalls, but you’d have to rummage and bargain. I was only there for a day and a half, and I’m trying to cut down on junk, so I was mostly in the fleamarket for the lulz. Here are some of the things I saw:

teletype

A real teletype

tesla coils

Tesla coils

geiger counters

Geiger counters, lots of ‘em (all non-functioning)

line launchers

n8prk‘s line launchers. Every few minutes he’d launch a marshmallow, which disappeared into the sky with a satisfying “Foomp!”

cavities and repeaters

Duplex cavities and repeaters. The big tanks at the back are for the 10m band.

too many antennas

Too many antennas, sorry.

enigma machines

Real wartime enigma machines. I think the price sticker said $90,000.

old apple tech

Old apple tech.

compact UHF cavities

Tiny UHF repeater cavities from Paladin RF (aka Honest Bob Morton of Maple Leaf Communications)

nixies!

Nixies!

good stuff, or junk?

Good stuff, or junk?

WB4APR's old school mono solar

WB4APR’s old school monocrystalline solar modules

WB4APR's solar spinny thing

WB4APR’s solar spinny thing

WB4APR's charge socket

WB4APR’s charge socket on his Prius.

WB4APR's prius

Bob WB4APR’s prius. Bob’s quite well known for creating APRS: Automatic Packet Reporting System.

WB4APR's prius

WB4APR’s prius, from the rear.

wire recorder

A wire recorder. Julian Koster would be proud!

old ataris

Old Ataris.

KX-3 is the new hotness

The Elecraft KX3 is the new hotness (if you wear a cap). I had to fight to even get a glance at this thing.

various bugs

Various morse bugs. I ended up buying a Code Warrior Junior.

a very purple Hilberling radio

A very purple (and very expensive) Hilberling radio.

Begali testbed

Begali testbed.

London, Gerry from the Unseen Bean's helper

London, Gerry from the Unseen Bean’s helper. It is good coffee.

tubes

Tubes, or valves.

more tubes

More valves, or tubes.

petrol engine from a Maytag washing machine

Petrol engine from a Maytag washing machine from pre-REA days.

hams dream in heathkit green

Hams dream in Heathkit green.

you couldn't afford a hallicrafters

You couldn’t afford a Hallicrafters then, and you probably still can’t.

too big, and too many solar panels

Too big, and too many solar panels.

civil defence radio

Civil defence radio, basically a 2m AM(?) HT. If anyone says that tubes are better than solid state, show them this.

edison cylinder

An edison cylinder, playing “Blue Ridge Mountains of Virginia”. It sounded good.

yaseu green

Yaesu green

more enigma

More Enigma.

russian data burst encoders

Russian data burst encoders. I remember a news piece on these around 1974; was there a spy bust in the UK then?

two nagras

Two Nagras for Nesey. You might not be able to see the tiny one inside the big one’s case.

too too many antennas

Too too many antennas — don’t be that guy.

QRPme kit

A QRPme kit. I sat in on the QRP session. Interesting, but clutter-inducing. MUST SHUN!!!

QRPme kit 2

QRPme kit 2

QRPme PIC kit

QRPme PIC kit

too many APRS users

Too many APRS users. Seriously, 144.39 sounded like the frog chorus being sick all the time.

I only met one ham I’d worked; Joe (KJ8O) of the Feld Hell Club. I’ve only had my licence for a year, so not really a big surprise. Mad props to Russ of Linux in the Ham Shack for correctly guessing my accent, possibly a first.

I have to say that the event was extremely well organized. They’d teamed up with Dayton Transit to have buses from the free parking to the event. I didn’t have to wait once, though it was clear that most hams aren’t habitual bus riders. I enjoyed my time in the sorrowful midwest; I might go back every other year.

VE3WE CW beacon

If you tune to 28.265 MHz, you might hear this: VE3WE CW Beacon. It’s only broadcasting at five watts, so if you’re really far, you might not hear it. The message it is transmitting is “SCARBOROUGH AMATEUR RADIO CLUB BEACON, REPORTS TO WWW.VE3WE.ORG 73″. It does this once a minute.

There’s a reports page: CW Beacon « Scarborough Amateur Radio Club. Although I basically live next door, I’ve sent mine in.

TCA is online

Radio Amateurs of Canada may seem a bit slow at times, but they’ve quietly gone and put their magazine The Canadian Amateur online. It has a decent interface, definitely up there with Exact Editions‘ work:

The files are downloadable as PDF, too. They look pretty decent on my e-reader:

(and yes, that is really an article about making a contact over 121km using a 5mW laser)

I don’t think any of the editions before 2012 will be going online. It would be nice, but RAC is severely limited in resources. The almost total lack of fanfare is a contrast to the ARRL’s digital QST, which is much announced but not actually available yet …

JT65 on Ubuntu, finally

I’d been trying to get JT65 to work in Ubuntu for a long time. K1JT’s package is fiddly to set up, and the version in the repositories is ancient. I’d had minor success with the Windows version of JT65-HF under Wine, but it wasn’t very stable, and any attempt to switch programs (something I, Capt. Micro-Attention-Span, do a lot) caused it to crash.

Thankfully, I found W6CQZ’s compiled version for Linux, which installed and ran almost without hitch. What you need to do is make your rig’s audio interface the default sound card, and then JT65-HF should pick up the interface and use it straight off:

That’s gnome-control-center confirming that JT65-HF is using the sound device. You do have to be a bit careful not to send computer audio across the airwaves when you do this, though.

The one good thing that is built into Ubuntu is that you don’t have to worry about clock synch like you do on Windows. Ubuntu pretty much keeps the system clock on perfect time, and Jt65 expects everyone to be synchronized. Doing this on Windows is much harder than it needs to be.

It’s a great mode. This is how I was heard earlier this evening:

They heard me in Australia, on 12W!

Update, 2012-06-17: W6CQZ’s binary won’t run under Ubuntu 12.04 LTS, so I had to bite the bullet and build from source. I grabbed the SVN repository, and followed M1GEO’s instructions Compiling WSPR. It’s still fiddly to choose which audio device (I use Pulse, and can use the same number for both input and output). See, lookit; signals!

 

yay! a completed SSTV QSO!

Yay! KA4UPI in Dublin, GA heard me, and replied.

Thanks to KE5RS‘s Live SSTV page, I can see what I was sending – or at least, how it was received in Leander, TX by KE5RS:

This was sent in response to this:

Here’s what I send:

compared to what was heard in Texas:

Choosing images to send is difficult. The number of cheesecake images is a bit distressing. For good, free images, I use Wikimedia Commons; the one I’ve used for my CQ call is File:Burrowing owl smile.jpg.

SSTV is a fun little mode. I was saddened to hear that its creator, Copthorne Macdonald VY2CM, passed away late last year.

SSTV is go (sorta)

Luc gave a really good introductory talk about SSTV last night at the radio club. I’d had no luck at all running qsstv on this Ubuntu box, so I thought I’d try MMSSTV under Wine … and it worked!

I picked this image up from N5HIC on 14.230 MHz. Sure, I need to fix the sync, so my images aren’t slanted. I also don’t seem to be able to transmit, since it fails with a “Can’t open sound card (3)” error. But it’s a start!

Worked All States – by my standards, at least

So I’ve managed to talk to at least one person in every US state. This is Quite A Big Deal for a new(ish) ham. To be more specific, I’ve done this using one mode – PSK31 – which makes it slightly better nerd-tuned.

But you’re going to just have to take my word for it now. In order to get a certificate, I have to get the 50-ish responds to log their details either on eQSL or ARRL’s Logbook of the World. And this is a bit more difficult.

On eQSL, I’m at 49/50. My lone North Dakotan QSO was from someone mobile from out of state, and eQSL doesn’t handle that well. North Dakota is very sparsely populated, and there’s very seldom anyone on the air from there. Every time I look on PSK Reporter, the emptiness of the state glares at me …

LotW is more of a problem. It says I still have ten more states to go. While it’s a very elegant system, the setup process for LotW is just a bit too complex for most people.

So here are my maps:

VA3PID Worked All States

VA3PID Worked All States: West

VA3PID Worked All States: Central

VA3PID Worked All States: East

I’d like to apologise to Vermont, whose presence is rather noted by its absence from the map. I’m actually surprised that more states ended up with all of their QSOs appearing inside, as:

  • Towns tend to be by rivers, so that’s where you’ll find more hams
  • Rivers often mark state boundaries
  • Ham locations are given as grid squares, which are a few kilometres across
  • Rivers are wiggly, and don’t respect arbitrary boundaries.

Absent making a blocky, 8-bit like political map, we’ll have to make do with these failings sometimes.

keep it short, keep me sweet

Most of my radio communications use a text mode called PSK-31. It’s popular and survives a lot of interference, but fast it isn’t. I tested sending 1000 random characters, and it took 5′ 33″. That’s about this speed:

Because the mode is so slow, I prefer to keep my transmissions and macros short, stopping just shy of Morse’s telegraphically incomprehensible VY FB CPY OM. My heart sinks when I’m in a QSO, and I see the beginning of a huge piece of macro text being fired at me. A one-way long conversation (like the dude who sent the entire wikipedia article about his hometown) isn’t a ragchew, it’s a barrage. If someone started wittering on at you for 15 minutes without a chance for you to say anything, no-one would want to talk to them. So please, check your macros, think before you type, and we’ll have more and more pleasant contacts.

QRM Cat

Was having a nice chat with Gary, WB0RUR, this morning on 40m PSK-31. His signal was clear, he’s a very experienced operator — yet he was jumping all over the waterfall with every transmission. I couldn’t understand why, but after his signal jumped, stopped, started, moved again, I caught a very brief TX: “QRM … cat

Gary explained:

“Sorry about that … he stepped on the keyboard and stopped my transmission and also bumped the VFO … so I’m probably moving all over frequency.”

QRM would be a great name for a cat.

Chirp, the universal HT programmer

CHIRP is rather good. It replaces all the horrid proprietary HT programming software with one cross-platform, cross-radio solution. It allowed me to program my new Kenwood from data from my Wouxun. It uses transparent file formats, and can import from everything. It’s great!

Update: Whoa! It can now program my FT-857D! I just uploaded all the repeaters within 50km, and there’s a bunch going on on a few of them.

24 hours after sending 286 digital QSL cards …

Of the 286 secure digital QSL cards I sent, 8 were undeliverable. I’ve had 25 responses so far:

  • Fourteen positive
  • Three wondering if I hadn’t seen their confirmation on eQSL/QRZ/LoTW
  • Two that don’t accept QSLs of any kind
  • One language issue; I have “Report” when “RST/RSQ” might be clearer internationally
  • One completely neutral
  • One auto responder
  • One with no record of a QSO in their log
  • One saying their callsign has been hijacked and that they are no longer an active ham
  • One negative

Of the positive ones:

  • Two have also sent real QSL cards (thanks, guys, but really, you shouldn’t have …)
  • Two asked how I did it.

Pretty good and quick response, I thought.