Metodi estremi per rilevare stazioni in Onde Medie - Disponibile On Line in tempo reale

Da un messaggio sul Gruppo Perseus su Yahoo : MW offset spectrum database 

Dal lavoro di Peer-Axel  DL2LBP :

http://fmscan.org/offsets/readspec5.php

di seguito un analisi in linea effettuata sulla frequenza 675 Khz con risoluzione di 0.01 Hz ....

Incredibile !

"My approach is to store the graphical spectrum in high resolution (RBW 0.12 Hz and less) around carrier frequencies, taking snapshots of all frequencies in the MW range, using remote Perseus receivers around the globe for comparison. The Perseus software has no interface to capture the spectrum. So I've copied and analyzed the V4/V5 GUI graphics, reading out the plot, automatically increasing in 9 or 10 KHz steps and calibrating afterwards. So what you see is not the original image but the spectrum derived from customized values stored in a database. It is combined with a basic night-time prediction and known offsets by FMSCAN / MWLIST. This is a project to grow and still very beta. But you can see the first results now. Please use the submit button every time you change location/frequency/time settings. 

If anyone is interested I can publish the PHP-scripts before not too long. The scripts for capture procedure with offset analysis in live mode (up to Perseus Version 4) can be found here: Perseus PHP Kit. It's running on localhost with Apache, and I'm not sure how it will behave in other system environments.

73
Peer-Axel
DL2LBP  "