On checking the predicted propagation using the chart provided at www.ips.gov.au for signals under 200Km at 3.5Mhz (80M) in UK, it was interesting to note that it did not list the frequency band as being supported. The experience today was along those lines although from where I was listening in Cheshire things were only slightly variable at times and I could only give good reports to everyone on net. The quality of the signals and audio received in Nantwich are excellent as you will hear.
Much better still. The conclusion I am drawing from these experiments are that your station needs to be pretty well designed and located to be immune from radio noise these days.
Sound and sound card issues
I did some fault finding when I discovered the audio from the WEB SDR was interrupted for a few seconds every few minutes. I found the Chrome Browser was the source of the issue, by using a tool provided by Windows called Resource Monitor. In the graph below it shows my computer processor locking up and the source coming from the browser – the orange trace. How neat is that for a fault finding tool? Now to find out why and whether or not it is regular or intermittent. I also have issues with windows 7 in being able to select sound outputs (Phones or Speaker). So its not all roses. Its a bit like HIFI I expect. You need good kit to appreciate the quality. I may invest in a decent soundcard and processing software as my basic equipment (Home made computer using standard parts) has several issues like I can’t record my own SDR. Gordon, G3WOV mentions he was transmitting on a different frequency to his receiver – a problem I found – lat week as there is no tracking between the PC and the Rig (Yet). I say yet because we are using crude equipment which is not yet fully developed. I don’t think this problem exists in remote transceivers.
On Net today, Jack G3PWK is restoring a valved B2 Spy set from WW2 and building a vertical dipole for a club member, Gordon G3WOV is out to a field day with his local club, Mike G4ICC is getting over his windows upgrade and delving into electronic log keeping and Tom G4CMG is enjoying his new computer.
Branch Matters Prevail
Short bulletin today – my main effort this weekend has been to update the regular army through the RE Command Support Branch (Many of us would know this as the Signals Wing). They wanted to know more about our branch and its goals. I must say it has been a privilege to start some very interesting communications at a senior level about the unique nature of our branch within the corps of royal engineers as a whole and which we have now followed up. Our update will be presented by our serving committee member, Jock McLay at their symposium this coming week and I have taken care to ask for feedback.
73 de Stu