[hpsdr] S meter bug

[Roland ETIENNE]

Hi all,

Ok, my explanation was not clear! 
I'am aware of the different standard for HF and VHF, no problem and this is
ok in PowerSDR, except for the low levels in VHF: all signals below -123 dBm
(witch is S4 above 30 MHz)are displayed as S0, or they could be S3, or S2,
or S1 depending of their level of course.
The problem is clear when looking at the source code, and I have a small
responsability in this error, hi!

73,
Roland F8CHK


-----Message d'origine-----
De : Helmut Oeller [mailto:dc6ny at gmx.de] 
Envoyé : dimanche 20 mai 2018 18:13
À : 'Roland ETIENNE'; hpsdr at lists.openhpsdr.org; 'Doug W5WC'
Objet : AW: [hpsdr] S meter bug

Hi Roland,

no need for extended explanation, hi.
The longterm convention is:
S9 = -73 dBm at HF up to 30 MHz
S9 = -93 dBm above 30 MHz

73, Helmut, DC6NY

-----Ursprüngliche Nachricht-----
Von: Hpsdr <hpsdr-bounces at lists.openhpsdr.org> Im Auftrag von Roland ETIENNE
Gesendet: Sonntag, 20. Mai 2018 08:21
An: hpsdr at lists.openhpsdr.org; 'Doug W5WC' <w5wc at windstream.net>
Betreff: [hpsdr] S meter bug

***** High Performance Software Defined Radio Discussion List *****

Hi all, and Doug W5WC,

I have found a little bug with S meter when receiving above 30 MHz. When the
S-meter is displaying S point instead of dBm, I noticed that the display
jump from S4 to S0 when signals are < 124 dBm, and in fact the 20 dB less in
VHF is missing:

 if (num <= -124.0f) output = "    S0);

should be:

 if (num <= -144.0f) output = "    S0);

(in console.cs lines 29288, 30706, 31011, 31226).


Testing a new beacon here on 50 422 MHz was the opportunity to notice this
problem!

73 and thanks for the job on the software, greatly appreciated!
Roland F8CHK.


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