WSPR

I tried a new mode last night … WSPR. Essentially a way of checking propagation. “WSPR implements a protocol designed for probing potential propagation paths with low-power transmissions.  Normal transmissions carry a station’s callsign, Maidenhead grid locator, and transmitter power in dBm.  The program can decode signals with S/N as low as -28 dB in a 2500 Hz bandwidth.  Stations with internet access can automatically upload their reception reports to a central database called WSPRnet, which includes a mapping facility.  To see a live version of the map pictured at top right, click here.”

WSPR Results
WSPR results on 9/15/2017

Above you can see the results of my efforts. I was transmitting 5 watts with my 31-foot vertical on 20 meters and 40 meters (mostly 20 meters). It does give you a good idea where you’re being heard.

73 de Dick N4BC

WSJT-X 1.8.0 rc2

The latest release candidate of the WSJT-X software incorporating FT-8 mode has been released (rc2), and it seems to have cured my power output problem. I worked several stations on 20, 17, and 15 meters this afternoon and everything looks ok — JT65, JT9, and FT8 all worked great.

The bands seem OK today … much better than the recent past. Hopefully I’ll be able to get on later this evening to see who’s about. It’s a dreary day outside with thunderstorms in the forecast so that might put a damper on later operations but hey … that’s ham radio, isn’t it?

73 de Dick N4BC

More FT8 Stuff …

OK, I played with the new mode for a while last night, and feel a little better talking about it now. FT8 is a new mode with a lot of interest. Twenty meters at times was wall-to-wall with signals on my waterfall, without a space to squeeze in … definitely lots of people trying it out!

As I mentioned before, it’s FAST! If you’re used to JT65 or JT9 modes, it’s a screamer. It’s almost unnerving to try and keep up. Remember when you were scrambling when you first started learning and using the JT modes? Well, this is that experience on steroids. It’ll get more calm as I get more familiar with it.

I did notice a couple of anomalies while I was operating. JTAlert-X (2.9.10, the compatible version) sometimes seemed to not populate the boxes with the decoded callsigns. Not always, but sometimes. Another odd thing was the auto-sequencing ( a new feature) worked well, except for one solitary station that tried to work me twice. In response to his signal report to me, WSJT-X should have replied with my signal report to him. WSJT-X kept transmitting the “RRR” exchange. Every single other one of the 13 QSOs that I had last evening performed flawlessly. Not sure if it was the software or something he had wrong, although I would suspect the latter. We need to remember that this is a release candidate software, not the final, polished software. They’re still ironing out the kinks, and a few glitches are to be expected. Overall, this is a gem of a program.

It’s a learning curve, but worth the effort. Another arrow in the quiver to nail the elusive QSO. My congratulations to K1JT (who, by the way, I worked on FT8 last night) and his crew for their hard work! Well done!

73 and see you on the bands,

Dick N4BC

 

Updates

I did get on yesterday afternoon, using JT-9 and had propagation into the US and Europe. My signal reports were not great, but were obviously sufficient for QSOs. I was hearing them much stronger (in most cases) than they were hearing me. I have GOT to get out this weekend and try to get my Cobwebb antenna put together and raised. Now that the weather is improved, I really don’t have any excuses. I guess it’ll REALLY upset me if it doesn’t perform better than my homebrew wire vertical!

I’ve been looking at the SARK-100 MINI-60 Antenna Analyzer and AM impressed. I have a MFJ-295 and it works fine, but a graphical analyzer (with BlueTooth now, as well as USB!) and functional PC and Android software is almost too good to pass up at the price point (~$140). If I keep on like this, I’ll eventually talk myself into springing for it. That’s how it usually winds up!

Well, back to work … later!

73 de Dick N4BC

In a Real Rut

I seem to have settled into a rut lately. I get home from work, turn on the rig, and work a few JT-9 contacts, and then shut down. I think I need a bit more spice in my life :-). I hereby resolve to try and inject more variety into my ham radio practices. This weekend, I think I’ll do a bit of PSK and a bit of CW, and MAYBE even a little SSB. If it wasn’t so darned hot and humid (106 deg. heat index), I might even venture a little antenna work and generator servicing.

I’m at work right now waiting for the HVAC guy to show up and service the failed A/C unit at one of our radio sites. I don’t like to see high-temp alarms at my sites!

I just finished up a week long class today on Motorola Networking Essentials. I learned a lot and am looking forward to more classes this summer. These classes are a result of us updating our analog trunking system with a new P25 digital trunking system. It’s all IP-based, so networking is an integral part of the infrastructure.

73 de Dick K4FTW

Elmering

I worked with Tom, WE4TOM, to get his PSK31 up and running. We only live a couple of miles apart, at most, but it was great when I finally saw his transmission on my waterfall and printing out on my screen.

We had tried a couple of times over the past two weeks to get something going. He could copy my transmissions, but I wan’t getting a whisper from him. I still don’t know what he did to get it working, but after a couple of iterations, HE DID! Sometimes you have to keep banging away at the problem until you get a break.

So Tom … guess what I’ve got for you? That’s right – a shiny new QSL card. I’ll deliver it at the next Club meeting. Great job of figuring out HRD and DM780. Here’s a preview …

Office Lens 20160623-210240

 

73 de Dick

More Digital Thoughts

Well, I’ve been using JT-65/JT-9 for several days now, and I do have a few thoughts to share. It’s amazing being able to copy a signal you can hardly see on the waterfall or hear. As a weak-signal mode, it is really unsurpassed. I’ve been using 5 to 10 watts output and find that more than sufficient in most cases. Using WSJT-X software from K1JT, it’s almost foolproof once you’ve got a few QSOs under your belt.

For me, the biggest negative is the limited ability to actually say anything of consequence. With a 13-character limit on your message — well, that’s not a lot of chat time. But all this has been said before, and it is what it is. Within the constraints of the format, it works exceedingly well.

It’s been a while since I’ve dabbled in the more verbose digital modes, so I’m going to try to get back to the “keyboard” modes for a while (PSK-31/63, etc. While the JT-x modes are great for propagation research (pskreporter) and snagging some new ones relatively easily, I think I prefer the more free-structured keyboard-to-keyboard, give and take of the more conventional modes.

73 de Dick k4ftw

DIgital and Low Power Stuff

I finally got around to setting up WSJT-X and JT Alert on the new laptop, and found quite a bit of action. I worked 18 stations (mostly Europe and the US) in a couple of hours on 20 Meters. I seemed to have a lot more luck on JT-9 than on JT-65. Sort of like watching paint dry, but I did fill in a few missing digital Grid squares, prefixes, etc in the meantime.

QCWA Chapter 119 activated Fort Monroe National Monument recently, and although I couldn’t lend a hand with the operation due to a prior commitment, I did manage to work them on CW. I haven’t heard how they did number wise, but it was a beautiful day to be operating portable.

We’ve found a site for W4MT, our 146.73 repeater. We lost our previous site and had been searching for a new location for quite a few months. In the interim, we’ve been having our Tuesday evening club net on the WN4HRT repeater.

Overall, the bands have not been the greatest, but the digital modes offer an opportunity to make contacts with lower power. I made those 18 contacts this evening using 10 watts to a vertical tied to the clothesline pole. Nothing sophisticated about that, folks! Where there’s a will, there’s a way. Don’t forget, CW was the original digital mode.

73 de Dick K4FTW

Back Again

I seem to show up here apologizing for not posting in a while quite often. What is it they say? “Good intentions pave the highway to Hell” … or something like that. Anyway, I have been somewhat productive. I’ve been experimenting with a homemade magnetic loop antenna for QRP operation, and it looks promising. I am AMAZED at what I can hear and work with a 13-ft loop of wire at ground level on twenty meters. Sure, it’s obviously not as good as a beam at 75 feet, but I can get on the air and communicate with it.

I also finally gotten around to loading FLDigi onto the new laptop. I expected a lot more trouble, as I remembered that there were problems when I first started using it. I must say, WIndows 10 cooperated wonderfully. The setup seemed to go much easier, too. Maybe experience counts for something.

I’ve been lurking on 20 meters in the digital portion of the band (14.070+) and reading the mail. Just trying to get a feel for QSO content and so forth. The last time I really was serious about RTTY/PSK/DIgital/etc. was when I was operating as VQ9RB on Diego Garcia. Those were the good old days … hamming pretty much every night from the club station, and a great bunch of guys. Some now Silent Keys and others still very much alive and kicking. It was a good mix of people, too. Navy guys who were fluent in CW and Merchant seamen (mostly Radio Officers who, in those days, were REALLY CW ops). Satellite communications on ships was fairly new, and CW was still required. Me, I was one of the few there that did CW only for fun! For all the others, it was job-related.

I think the first time I ever did RTTY was when I was VQ9D or S79D in the Seychelles. I had a Commodore 64 computer with a plug-in module on the backside that generated the keying signal. Worked great.

Well, enough reminiscing. Look for me again around the digital frequencies. I’d be pleased to have a chat.

73 de Dick K4FTW

Computer work

Well, I was going to be good and get that 80M antenna up in the air last night, but rain and thunderstorms took care of that idea. The weather is supposed to continue this way for the next couple of days, so I decided to do some work in the shack. I needed to back up the laptop, since the last time that was done was in April. I saved an image to my 1TB external drive, so that’s done now. I also made an image of my newer Dell Venue Pro 7140 11-inch tablet, just in case.

I think I’ll keep the laptop at Windows 7 and not upgrade to 10 right away. Most of the hams that have tried the Windows 10 previews find that almost all the ham software that I use runs fine under Windows 10, but I think I’ll wait a bit before I do something drastic.The Win 8.1 tablet is already in the queue for the upgrade at the end of July, though.

I am having an issue with the laptop and a very slow boot, however. The drive activity light really does a lot of blinking, which tells me that it’s getting accessed a lot. It takes 5 minutes or so to completely boot. I know there’s a lot of junk on there … it’s 4 or 5 years old now and still has the original Windows 7 install on it, and I know people that do a fresh install every six months. I just hate to have to reload LOTS of software, and then configure it again for all the radio gadgets.

Oh well, tonight is the monthly Radio Club meeting, so I can postpone my decision for a day or so, anyway. I’m sure there will be a lot of info about the upcoming Field Day effort, and an after-the-fact review of the picnic last Saturday.

73 de Dick K4FTW
dick@k4ftw.us