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Due to the health issues of the developer Joe Large W6CQZ it has been some time since there was a new version of the popular JT65-HF application. So I was interested to receive an email from Erwin, DK5EW, telling me about an enhanced version of JT65-HF made by Matthias DL3VCO called JT65-HF-Comfort.

JT65-HF as enhanced by  Matthias, DL3VCO

Matthias has not made an add-on to JT65-HF in the style of programs like JT-Alert. Instead he has made changes to the actual JT65-HF source code. I was particularly pleased to see that the enhanced version retains compatibility with the popular add-on JT-Alert by Laurie, VK5AMA. When I tried recompiling the JT65-HF source code myself the new version did not work with Laurie’s program, which I regard as an essential aid to JT65A operating. (In fact I have cheekily asked VK5AMA if he would consider making a version of JT-Alert that works with K1JT’s WSJT-X program!)

I have not spent much time with JT65-HF-Comfort as my interest at the moment is directed towards the new JT9 mode, but you can see from the screenshot that one of the improvements DL3VCO has made is to display the callsign above each trace on the waterfall. He has also added a new Statistics menu which displays the number of contacts you have made per DXCC entity per band. I couldn’t show you that as I use KComm for logging so my log is not in a format that JT65-HF-Comfort can read. You  can find a Google-translated version of the JT65-HF-Comfort information here.

If you are interested in trying JT65-HF-Comfort then you can download a setup program (a modified version of W6CQZ’s installer) to install the updated version. I shall certainly try using it the next time I do some JT65A operation.

I have found the solution to a problem that had been bugging me for ages: Omni-Rig did not work with JT65-HF. It was not a major bother for me as it could be worked around by the simple expedient of setting the frequency manually. But after an episode yesterday when I thought I was on 15m and was actually on 20m I decided to look at the issue again.

The solution turned out to be very simple and I stumbled across it by accident. You must start OmniRig before you start JT65-HF! That may seem obvious, but in fact other programs that use Omni-Rig manage to do so without it being run first. Which is why it never occurred to me to try that before. Doh!

Unfortunately the communication between the programs only works one way. JT65-HF can read the frequency from the rig using Omni-Rig but it can’t set it. As I have the JT65-HF source I took a quick look to see if I could fix the problem, but it would not be easy. A major discouragement to tinker with the source code is the fact that the newly-compiled program breaks the link between HT65-HF and JT-Alert. So I am not going to venture down that road. When it comes down to it I’d rather have my alerts than have rig control.

Thanks to some excellent support from JT-Alert’s author, Laurie VK3AMA, I now have my alerts fully working and have gone back to JT65A with renewed vigour. I was getting a bit frustrated as many DX stations that I could decode clearly were not returning my calls. Is there something wrong with my setup? Perhaps it was just because it was the weekend and busier than usual so that others whom I couldn’t hear were replying to the same call and the DX couldn’t decode any of us. A few times the station I called replied to someone else.

I still managed to work several DX stations on 10m and 15m using 30 watts of power. Best contact of the day was with KC2WUF who said that he was running 3 watts to an attic dipole. (Actually he sent “3W ATIC DP” but I got the message!) It’s a pity I wasn’t running QRP this end as it would have been good to have a 2-way QRP QSO attic to attic!

I like Christmas, but with that sole exception I hate this time of year. The short days, when it’s dark at breakfast time, dark at tea time, and in between the sun struggles to reach an elevation where it can be seen over the tops of neighbouring houses.

It’s not just the daylight the sun fails to make much impact on. There’s next to no propagation on any of the higher HF bands. I believe that LF band enthusiasts have their best time at this time of year. But I have never been lucky enough to have an antenna for the LF bands. My attic multiband dipole will work on 80 metres but it is shortened so much that the usable bandwidth is barely 60kHz. It is really only usable on the QRP CW frequency and the PSK31 operating frequencies.

Yesterday I thought I would try some digital work on the 30m band. I couldn’t hear any PSK31 at first but I did hear some JT65 so I thought I would try that. I made three QSOs including one with N4ABN which I thought was quite good nfor mid-morning. The trouble with JT65 is that I find it difficult to maintain concentration. It’s 50 seconds before anything is decoded, and during that time my mind has drifted off and I have missed the moment when I should have responded.

Just as an aside, I noticed a quirk with the JT65-HF software. I don’t use CAT control of my K3 (never could get it to work) so I have to set the frequency of the radio and the software manually. But whenever I did this, after a few seconds the frequency would reset itself to 0. I happened to notice that the frequency was being displayed with a comma as the decimal separator. I had left the PC configured like that after testing the fix for the problem with KComm. On a hunch, I reset the separator to a dot (period) and lo and behold the frequency stayed as I set it. I’m surprised that no-one seems to have spotted this but at least we know now how to fix it.

After making a bit of a meal of three JT65 QSOs I decided to switch to PSK31. Although it is not such a good mode for DX, if proof were needed, there were 3 or 4 spots of me on JT65A in the USA but my PSK31 at slightly higher power never penetrated beyond Western Europe.

I do find PSK31 a more rewarding mode to operate, though, because you do usually find out something about the other operator or his station. Having said that, has anyone noticed a trend towards shorter QSOs in PSK31? Quite often now it’s name, report, qth, locator and goodbye. Whilst I can’t say I miss knowing the make and model of the operator’s computer and the colour of the interface cable, I do like to know what power they are running and what antenna they are using.

Propagation remains good on 10 metres. I left the K3 on 28.076 running JT65-HF for most of the day. I made several contacts including N3CAL, WA2CRB, PY8ELO, KE1AF, WB9OTX, WK8G and SV4FFK. The map shows where my signal was heard. I was even spotted by Joe, W6CQZ/4, the author of the excellent JT65-HF software.

JT65 is addictive. It’s also a very relaxing way to make QSOs. It’s ideal for me at the moment because my eyes tire very easily. I end up with blurred or double vision if I read or stare at the computer screen for too long so modes like PSK31 aren’t really a good idea. Thanks to the JT65-HF add-on JT-Alert an alarm sounds if a station I haven’t worked before calls CQ and another sound wakes me up if a station replies to me. This means that I can look out the window or something and only need look at the screen when I have something to do. The print in the JT65-HF program window is nice and big too.

Listening on 28.076 I heard some strange noises which I eventually realized were FM transmissions being received in SSB mode. CBers transmitting out of band I presume.

I don’t suppose many CBers read this blog but come on, guys. It’s none of my business if you choose to operate illegally but if you do, please stay below 28MHz. You may not hear our weak JT65 signals with your FM radios but we sure as hell can hear you.

Update: Just worked Joe “The Man” W6CQZ/4 in Florida. He was running 5W to what I seem to remember him posting once in the JT65-HF Google group is a Hamstick on a mag mount stuck to the roof of his shed. Thank you Joe for the contact and for the fantastic JT65-HF software!

Today was the first really big Sporadic-E opening of the year. Six metres was wide open across the whole of Europe and Scandinavia. There was even a good 2 metre Sporadic-E opening in central Europe though no propagation appeared to reach the UK.

Yesterday I worked a string of Spanish stations on Six but that opening was not as good as today’s. This morning’s fun began with a contact with OK2IEN, then it was mostly Germans with a few other countries until round about lunch time.

I prefer the relaxing pace of Search and Pounce but when most of the stations you pounce on either have a pile-up and don’t hear you or are S&Ping themselves and move away it’s time to call CQ. It’s not something I often do and it’s almost more than my brain can cope with to talk to people while simultaneously typing into the computer their report, locator and call, but I quickly worked a string of stations and often had two or three at once replying to my CQ calls. This isn’t something that happens often when you run a stealth dipole so you have to enjoy it when you can!

In the afternoon, for a break, I tried JT65A. A lot of the interest in monitoring 50.076 seems to have evaporated when conditions were flat but a few stations were on and I made three contacts using the mode, though none were DX I could not have worked on SSB.

Later the propagation seemed to have shifted North to favour Denmark and Sweden and I worked a number of stations from there, many at massive signal strength. In all I made 45 contacts today – probably more than I have ever made during a single day except when playing in a contest.

I love six metres – it really is the magic band!