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I have never had a JT65A contact on 30m. This is surprising. The 30m band is the most popular band for the WSPR mode which has demonstrated that it provides good propagation 24 hours a day. The trouble is that there is nowhere for JT65A to operate. The JT65-HF software frequency menu offers two choices for VFO frequencies: 10.139MHz and 10.147MHz. But the former will cause interference to WSPR and have you fighting it out with a phalanx of PSK signals and the latter conflicts with the frequencies used by APRS packet and other digital networks.

To those who wonder why you can’t just find a clear frequency and operate I would point out that this doesn’t work with weak signal digital modes. Not only will users of other modes not know you’re there and call on top of you, but the DX you hope to work won’t be able to find you either. So it’s important to have a frequency of operation that has a good chance of being clear, where other users know to listen.

From recent discussions it appears that the two previously mentioned 30m frequencies were chosen in a desire to find a place to operate that fits in with the IARU Region 1 and Region 3 bandplans. In the USA (which is Region 2) narrow band digital modes can use 10.130-10.140MHz but in the rest of the world the area up to 10.140MHz is allocated to CW.

I have long believed (and have probably written before in this blog) that it is absurd to have different bandplans and different rules for different parts of the world because radio waves don’t stop at national boundaries. I suspect that the allocation of just 10kHz for digital modes was made back in 1979 when the 30m was first allocated to amateurs, when the only digital mode was RTTY. Since then, and especially in the last ten years or so, there has been an explosion in the number of digital mode users (due to the increasing use of computers) as well as a proliferation of different digital modes. It is time the band plans were updated to reflect that.

I think the bandplan for 30m in the rest of the world should be brought into line with that in the USA. I have nothing against the CW mode but if 30kHz is enough for US amateurs to get by with then the rest of the world can also manage with 30kHz.

Saw this in my Google Reader at work and had to post.  Apply to work, ham radio, …?  It’s clearly an artist’s take and not an engineer’s.

As readers of this blog will know, I’ve been letting HF and particularly HF contesting take a bit of a back seat recently. No particular reason, but it’s just one of those ebbs and flows in my interests in the hobby – it’s happened before and I’m sure it will happen again.Last weekend was the RSGB’s Commonwealth Contest, often known as BERU. This contest is quite an individual one and one that you either love or hate. Anyway, that’s by-the-by, I love it and many of my Canadian friends, especially John, VE3EJ take part in it, so I always like to support their activity.I found a few minutes on Saturday evening to make some QSOs, mostly on 7MHz, where I worked John VE3EJ as well as a handful of others including 8P9AA, VY2SS, VE3JM, VO1TA and ZC4LI. I half intended to look at sunrise the next morning, but didn’t get around to it.And then my QRPP contact. QRPP is very low power – generally considered to be less than one watt. On Tuesday evening, I’d heard someone mention that it was one of the 80m CW Cumulative Contests. I tuned around quickly to see who was on and the very loudest signal was John, G3VPW who is about 3 miles from here in a village to the south of us. John was about 40db over 9! I turned the rig down to as little power as I could manage, around 100mw. Although it took me a few calls, I worked John – probably my lowest ever powered contact on HF!

As readers of this blog will know, I’ve been letting HF and particularly HF contesting take a bit of a back seat recently. No particular reason, but it’s just one of those ebbs and flows in my interests in the hobby – it’s happened before and I’m sure it will happen again.Last weekend was the RSGB’s Commonwealth Contest, often known as BERU. This contest is quite an individual one and one that you either love or hate. Anyway, that’s by-the-by, I love it and many of my Canadian friends, especially John, VE3EJ take part in it, so I always like to support their activity.I found a few minutes on Saturday evening to make some QSOs, mostly on 7MHz, where I worked John VE3EJ as well as a handful of others including 8P9AA, VY2SS, VE3JM, VO1TA and ZC4LI. I half intended to look at sunrise the next morning, but didn’t get around to it.And then my QRPP contact. QRPP is very low power – generally considered to be less than one watt. On Tuesday evening, I’d heard someone mention that it was one of the 80m CW Cumulative Contests. I tuned around quickly to see who was on and the very loudest signal was John, G3VPW who is about 3 miles from here in a village to the south of us. John was about 40db over 9! I turned the rig down to as little power as I could manage, around 100mw. Although it took me a few calls, I worked John – probably my lowest ever powered contact on HF!

Last evening was a momentous one for me on 70MHz! I popped into the shack after I’d got in from work and switched the rigs on, including the 70MHz FM rig. Andy, G6REG/M called CQ on 70.450MHz and I answered him.

Andy was about 12 miles away on the edge of Oxford and we had a great QSO as he drove down the A420 towards me. Then it struck me! By the time he got to the roundaboout just to the south of me, he was about a couple of miles away from me.

Quickly, I got the Wouxun 70MHz handheld out and called him! He heard me, despite the handheld being in the shack. We did a couple of overs on the handheld as Andy headed west, out to a distance of 2 or 3 miles. Signals were still S9. So that was great! I knew the Wouxun worked well, especially with the Garex Flexwhip, but I hadn’t actually had a contact with it. Thanks Andy! Hopefully now that the weather is improving, I will be able to make some QSOs with the Wouxun from various high spots.

And the other thing that came out of last evening’s 70MHz activity was that the Tring ‘parrot’, MB7FM is back on air. It vanished a few weeks ago as you may remember but it’s great to hear it back in service.

JT65A is a wonderful mode, and JT65-HF by Joe Large W6CQZ is a wonderful program that makes it enormous fun to operate. True, the mode only allows the exchange of signal reports, though a very brief amount of extra information (such as power and antenna) can be sent in a custom message. But so many contacts using other modes also only result in the exchange of such limited information. On the other hand, there is a certain magic in seeing faint musical tones sent by a faraway station translated into a message on your screen. Many people have said that JT65A is addictive. I agree.

If there is one problem with the mode, it is that the 50 second transmit cycles where nothing is decoded on to the screen until the end makes it easy for your attention to wander. I’m ashamed to admit it, but many is the time someone has replied to my calls and I missed it because my mind was elsewhere. So I was really pleased to discover an add-on for JT65-HF written by Laurie VK3AMA called JT-Alert. One of a pair of add-ons he has written (the other is a kind of macro tool for custom messages) it watches the decoded text and sounds an audible alert when a CQ call is received or when a station replies to your call. You can have different sounds for the two alerts, and the audible alert is optional and can be disabled. The tool can dock to the bottom of the JT65-HF window (as in the screenshot above) so the two function as one program.

I have been monitoring for activity on ten metres, which is dead most of the time. It would get pretty boring sitting in front of a blank window for hours at a time but I have set the CQ alert to a loud klaxon which will bring me running to the shack from wherever I am in the house if/when a call on 10m is received. It’s a really useful tool (though it does get a bit annoying when working on 20m and my XYL isn’t so keen on it either!)

I made a number of nice contacts on 20m using JT65A today, including CO2VE (Cuba), PJ2MI (Curacao) and LU6AM (Argentina). I also worked a fellow blogger, David K2DBK. Unfortunately my custom message to David didn’t get sent as I got caught by a quirk in the JT65-HF program that was pointed out to me later by members of the JT65-HF support group. Apparently if you start a message with 73, those two characters are sent as a special shorthand sequence and the rest of the custom message is ignored. I had actually read that in the documentation, but I’m afraid due to the onset of senility RTFM often isn’t the answer as I FTFM (Forget The Frigging Manual) immediately after I’ve read it. Oh well.  🙁