Author Archive
10m transceivers
Looking on the internet, there is a wide selection of 10m (28-29.7MHz) transceivers available. Many can be extended (illegally in the UK) to cover CB frequencies.
As an example, the Alinco DR135 is available for £144.99. I am sure shopping around will show that lower prices are possible. This rig was available (special offer) for less than £100 recently. At one time, single band 10m rigs were illegal in the UK. This is no longer the case and these rigs can be a low cost way of getting on this most interesting band.
Ultimate 3 WSPR (and other modes) beacon
The Ultimate3 QRSS/WSPR Transmitter Kit is the third version in the “Ultimate” QRSS/WSPR kit trilogy. It can produce QRSS, Hell, WSPR, Opera and PI4 slow-signal modes anywhere from audio to 10m and above. Plug-in LPF filters are available for all 12 HF/MF/LF bands.
The price is USD $29.00. To order please visit QRP Labs.
The Ultimate 3 is probably the lowest cost beacon available. I still have my unbuilt kit awaiting better health to build, although several kind folk have offered to build mine for me. Jay W5OLF kindly supplied me a 10m 500mW, single PCB, WSPR beacon (WSPR-AXE-CW) ready assembled and that has blown me away: it has been copied in every continent on 10m. The Ultimate 3 is the more flexible design but the WSPR-AXE-CW is an ideal tiny WSPR only beacon.
My Ultimate 3 kit was ordered with GPS, but it was supplied without this, but with an extra PCB – I think I got the wrong order. I really should write to Hans Summers, but I have been too unwell. For now, the kit remains unbuilt. I intend to build it when I am fitter and less clumsy, hopefully in 2015.
HF contests
I am not a great fan of HF contests. As a QRPer, I find CW contests all but impossible as people tend to send and receive at incredible speeds usually with PCs. SSB is usually better and often the “other end” has worked you before realising you are running QRP. Later stages of contests are usually easier as the big guns are sweeping for remaining points and looking to work weaker stations.
I have been unable to work in the ARRL 10m contest (visitors this weekend) ) and I forgot the CQWW SSB contest this year! Last year, I was in hospital. It is 2 years since I last took part in CQWW SSB, which I find a very fruitful contest. I usually stick with 10m only.
Each Tuesday evening the RSGB organises a rotating series of VHF/UHF contests (UKAC) and I try to come on for the 50, 144 and 432MHz contests where I am at home and available. I use 5w pep and a V2000 vertical on 50MHz, a 3 el on 144MHz and 5 el on 432MHz. On 144 and 432MHz the antenna is hand-rotated. On 50MHz it is vertical and fixed. I can usually work 150-250km in these contests despite my 5W.
ARRL 10m contest this weekend
A reminder that the annual ARRL 10m contest is this coming weekend. Conditions are likely to be good on 10m, so this is a good chance to work some worldwide DX. Next year with the decline in sunspot numbers, this is not likely to be as good. Unfortunately my operating time will be very limited because of visitors.
WSPRnet problems
WSPR signals propagate around the world and allow very weak signals to be correctly decoded. WSPR is some 12-14dB better than normal speed CW. If 10W gets through on CW less than 1W is quite enough with WSPR. My own 10m 500mW beacon, to a simple “nothing special” end-fed wire antenna has been copied on every continent in recent weeks, including Australasia and Antarctica.
The main bonus with WSPR is that all reports can be automatically sent to an internet database (WSPRnet), so anyone can see where signals are reaching and how well. Today though, the WSPRnet database has been in trouble, possibly due to being overloaded. It was not working the last time I checked but was working late this morning.
Android WSPR apps
Thanks (again) to Steve G1KQH, these are Android apps for WSPR. I see they now include a TX beacon.
Two new WSPR Apps for Android
WSPR Beacon
and another I have just found:https://play.google.com/store/
apps/details?id=xxx.wspr. g4swy&hl=en_GB 73 Steve
http://www.g1kqh.talktalk.net/
Our varied hobby
One of the great things about amateur radio is the number of different ways in which the hobby can be enjoyed.
For over a year now my health has been poor because a brain bleed in September 2013. Before then, I enjoyed QRP QSOs (mainly SSB), construction and field experiments from VLF to optical. Since my stroke I have been clumsy and (until recently) not allowed to drive. Very very slowly, normality is returning but I think it will be way into 2015 before I can call myself well.
In the meantime, I still manage WSPR and other digital modes from home. I can even, albeit briefly, manage our local 2m FM net and the occasional VHF/UHF contest. Some people enjoy satellites, MS or moonbounce. Others just like to ragchew on 80m.
We must rejoice that there are so many different, yet equally valid, ways of enjoying ourselves. We have a great hobby.