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The QRP Myth(Post)
If you look around on the ham radio sites on the internet, you cannot fail to notice that QRP operating is very popular. There are good reasons for that; it's easy to build QRP gear and it is general ...
Alex Loop Measurements(Post)The Alex Loop is a popular commercial small transmitting loop antenna.Measurements here are simply an aide-memoire for my own experiments. They should be used with caution.Loop conductor Datalin ...
Chameleon P-Loop Measurements(Post)The Chameleon P-Loop is a popular commercial small transmitting loop antenna. I have bought two to use for propagation experiments using two WSPRlite antenna test systems. Th ...
Comparing two commercial small transmitting loops(Post)MethodA Chameleon P-Loop and an Alexloop were erected in an open flat area. The area was clear of any obstructions. The antennas were 30 metres apart and orientated in the same way (approx. 064 mag).
Portable ham radio operating at night(Post)With winter fast approaching the hours of daylight are dwindling here in northern Europe. Shorter days might mean less time for lightweight portable operating - but they don't have to. Portable opera ...
Measuring small differences between antennas(Post)DXplorer.net opens up a new way to measure antenna performance. 3dB is the smallest change that is generally considered as being audibly detectable on a standard communications circuit and so I wonde ...
Indoor HF antennas - does it make much difference?(Post)It seems that more and more US amateurs are restricted in their activities by regulations imposed by Home Owner Associations (HOAs) that do not allow external antennas. It is hardly surprising ther ...
Testing a Test Methodology(Post)Comparing HF antennas is not a straightforward task. Radio amateurs have used a variety of methods over the decades but few stand much in the way of scrutiny when it comes to examining their validity ...
FSQ Data System Tested(Post)A few of us have spent much of the weekend exercising the FSQ system on 40 metres. Here are some preliminary thoughts. During our tests we only used some of the FSQ facilities; for example we did not ...
Combating HF Noise: what works?(Post)First published in the SOTABEAMS Newsletter 1 September 2018. If you like this article, why not sign up to our newsletter? It comes out about monthly.Combating HF Noise: what works?Last year I boug ...
5 Most Popular HF Portable Antennas(Post)I carried out a survey in early 2014 to try to discover which portable HF antenna was most popular. Just over 300 people responded. They were asked to choose their "favourite portable antenna" fro ...
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