Knife Edge Refraction at VHF

Currently I am sitting in a log cabin (with a log fire) surrounded by snow capped mountain peaks wondering how 2m propagation would be from here. Sharp mountains often allow good propagation into screened valleys by refraction over the peaks sometimes with strong signals. Unfortunately I have no ham gear (apart from Echolink) to try it. Instead I am just enjoying the views. 10cm snow forecast tomorrow here, HI.

Canadian Rockies

For the last few days I've been in the Canadian Rockies. The scenery is truly the very best I've seen (inland) anywhere on Earth. The 300km drive today from Banff to Jasper had snow capped mountains and azure blue lakes and rivers all the way. Only seen 1 HF antenna so far and that was from the Rocky Mountaineer train from Vancouver to Banff.

Germany gets 472-479kHz

Surprisingly, news on the wires today that German amateurs have been granted early access to the new MF allocation. I wonder if OFCOM will release it early too?

"LF Today" RSGB book on special offer

This excellent introduction to LF/MF amateur radio is available from the RSGB bookshop at just £7.99 and I can recommend it. It helped me a lot when I started and still gets referred to regularly.

CW on 136kHz

Mike G3XDV reported normal speed CW activity on 136kHz with QSOs with G3KEV and DK7FC's normal speed CW beacon. Although harder work with QRP, 136kHz is an ideal band for CW contacts. A lot of people are saddened that digital weak signal modes have rather put CW on the shelf.

VE7 Repeaters

Now 23 hours without sleep having arrived in Vancouver after a long flight from the UK. Currently in the hotel room trying to work some BC locals via Echolink connected repeaters. What I really need is SLEEP though!

First country gets 472kHz allocation

Monaco is reported (by 3A2LF) to have allocated the 472-479kHz band to radio amateurs from May 18th as a secondary allocation with a maximum power of 1W EIRP. Others are likely to follow in the following 12 months, we hope.

FT817 replacement - 2 years away

The following (extract from a) post from Bryan KE6ZGP appeared on the FT817 Yahoo group in the last few days.

"Tom interviewed the Yaesu rep about their new FT-DX3000 and the FT-1D, when all was said and done he started taking questions, I went ahead and asked about a possible replacement for the FT-817. The rep then stated - due to some parts (like the LCD screen) either being no longer available or extremely hard to find, they will likely replace the FT-817 in a couple years. He wasn't sure when exactly, R&D hasn't started on anything, but the earliest we can expect to hear any solid talk is two years from now."

Now I assume this data is good and the rep from Yaesu is properly informed. If so, then any replacement to the FT817 is at least 2 years away. This gives Elecraft a clear field for a couple of years with their new KX3. The only other QRP radio on the horizon is the Ten Tec Argonaut VI which is due out towards the end of the autumn this year.

Hendricks QRP Kits

The BitX SSB transceiver on the QRP Kits website

http://www.qrpkits.com/ have some really nice kits on their pages these days. If you are new to QRP then they offer a very nice way to join in the fun. One example is the very neat version of the famous BitX 20m SSB transceiver designed in India originally. They also have plenty of CW kits and accessory kits like ATUs, attenuators and simple pieces of test gear. I've never actually built any of these kits but they look well designed with clear building instructions.

The future of HF amateur radio

There is no doubt that HF amateur radio is changing. Fewer people ragchew these days (do you agree?) and there is considerably less activity outside of contests, mirroring a change already seen on the VHF bands. More people are using digital modes instead of phone and there is much more use of software tools to detect DX, decode and encode CW, PSK31, etc. The hobby is changing: some of the new ways of operating are very good, but along the way we are in danger of losing something of the appeal of the hobby perhaps?

Now, there is also another factor: it is very likely we will have seen the end of active sunspot cycles once the present low peak of cycle 24 declines. Many of us who experienced the peaks of 1957 through to 1980 are very unlikely to experience similar ones in our remaining lifetimes. Propagation on HF may never be as good as the second half of the 20th century for another 100 years. There are also theories that HF propagation is not as good as it was, even assuming similar solar activity, as if the ionosphere is actually changing its behaviour.

Then there is the challenge of spectrum pollution. This is already a menace for many of the lower HF bands but even bands like 10m and 6m are affected.

So, the challenge now is to look to the future, positively, and see how the future of HF will be redefined. I have no idea what the next 10 years will bring, but I suspect the use of our HF bands will be quite different by the 2020s.