Re: RS Yesterday
Arie Dogterom <pa0ez@...>
I have been involved in that IARU R1 definition ( it was accepted at the Brighton conference almost 40 years ago) and the text is based on a proposal from PA0MS and me.
At that time there were no commercial VHF-up receivers. The standard was a convertor in front of a 28 of even 4 MHz RX. That is the pure reason for the 20 dB difference between the HF and the VHF-up reference.
One can fight about an S-point being 6dB or something else. If people are using a reasonably calibrated meter than it is worth contemplating. At the time we tought that the dBm values and the 6 dB were a reasonable approach to the existing (ARRL?) system with terms as "very strong" etc. I do not think many people do in fact know what the "non-dBm" definition of S-points are.
I can agree to any deviation of the -93 dBm reference and/or 6 dB step, if that could result in real reporting. But I am rather pessimistic.