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Design & test RF links

Derek Eccles

I work in the Water Industry were we use radio links for telemetry/SCADA purposes. In order to find a viable link, a desktop study is completed using “path profile” applications which is backed up by an actual on site radio test. Any help in the form of webinars, paperwork or courses would be most welcome.

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    Hi Mike, I had a look at the reports which give loads of info. on path loss and different models which is all good. At home, I use the Radio Mobile app. for path profiles which I believe uses the Longley Rice model. 

    I am also wondering about the actual on site radio test and what measurements to take. I can calculate Fade Margin and I think 20 dB is a good target to aim for. I can also get figures for system availability/reliability and again, I think well over 99% is a good target to aim for ?

    Unfortunately I dont have any experience of doing this work and therefore want to be sure the figures I am getting are going to provide a link that is viable. Do you know of any documents/standards that I can refer to which give details on how to carry out the radio tests and what measurements to record etc. 

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  • 0

    Hi Mike, I had a look at the reports which give loads of info. on path loss and different models which is all good. At home, I use the Radio Mobile app. for path profiles which I believe uses the Longley Rice model. 

    I am also wondering about the actual on site radio test and what measurements to take. I can calculate Fade Margin and I think 20 dB is a good target to aim for. I can also get figures for system availability/reliability and again, I think well over 99% is a good target to aim for ?

    Unfortunately I dont have any experience of doing this work and therefore want to be sure the figures I am getting are going to provide a link that is viable. Do you know of any documents/standards that I can refer to which give details on how to carry out the radio tests and what measurements to record etc. 

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