It is said that a picture is worth a thousand words, so I will keep this post brief by posting only two charts. The first is just below:
As pointed out in his most informative article titled Interpretation of S-Meter Noise Floor in HF Receivers by Basu VU2NSB [link below] the ‘noise’ any given amateur radio operator experiences will depend a good deal on the location of his or her station.
To assume that the entire band is ‘noisy today’ based on what we hear or a measurement taken by using our personal transceiver’s S-Meter is just that, an assumption…far too often with no proof for the assumption given or even sought.
Do you agree? Disagree? How do you measure Noise Level?
Please use the ‘Reply’ section below this post or contribute your own Post if you have some thoughts on the matter.
The purpose of the ’80 Meter Study Group’ of the Forum is to stimulate discussion and the sharing of knowledge so I will leave this chart and present one other below.
The chart above, also created by Basu VU2NSB, illustrates another inconvenient truth. The methodology used to create the chart is described in the article referenced above.
The S-Meters in use by amateur radio operators around the world differ significantly from radio to radio.
On the Hudson Valley 80 Meter Net we have had participation from over 117 stations from the Canadian Border to the Long Island Shore located in 28 New York counties and eight states in the last six months.
A ‘5-7’ from one station may not be equivalent to the same report from another.
During a recent HV 80 Net one station remarked that another was an ‘S-2’ while the other station said, ‘…and you are an S-9 here, armchair copy.’.
How reliable are the reports we give based on using our S-Meters and more importantly what information is best to use if Station Optimization is our goal?
Again, if this issue interests you and you can supply relevant information, thoughts or critiques, your comments are most welcome in the Reply section below or through your own post.
Thanks for reading this post and hopefully sharing your thoughts which will help us all to learn with and from one-another.
1.Interpretation of S-Meter Noise Floor in HF Radio Receivers; https://vu2nsb.com/s-meter-noise-floor-hf-receivers/.
2. Radio Transceiver S-Meter – Pitfalls to avoid; https://vu2nsb.com/radio-systems/amateur-radio-station-ham-shack/radio-transceiver-s-meter/.