The HDD arrived and I have a computer again!
I’m using Spectran to examine the audio output of my IC-7000.
I had good success using my ears alone in identifying weak signals but the waterfall display helps identify the really weak ones. I can also narrow the digital audio filter to 1 or 2 Hz to separate two or more signals on the same (or very similar) frequency.
I’ve picked up a few signals that I would not have known were there (using my ears alone) with this technique. The one thing that is nice is the duration of the waterfall (many seconds) helps me identify the non-DAID (no dash after ID) signals. I know I was moving through the correct frequency on their silent time between IDs. Now I can see the signal before or after I arrive on frequency and can set up correctly to receive them when they transmit.
I’ve noticed some wider bandwidth signals in the middle of the NDB band. They seem to be digital.
… Research …
They are on the correct frequencies for DGPS signals so I’m going to need another software program to decode them. I’m looking at WSJT for this but the learning curve is quite steep.
More later as I figure this out.
EDIT: It looks like Spectrum Lab also can decode DGPS … I have a better grasp of how that program works so I’ll start there.
EDIT 2: I can’t seem to get the terminal section of Spectrum Lab to “see” the signal. Obviously I have done something incorrectly. I loaded DSCcoder and it works great. I’ll keep testing it for a bit to see if it is the software for my situation.
