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SDR programming?

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ChrisSmolinski:

--- Quote from: skeezix on June 01, 2016, 0134 UTC ---Hopefully I don't have to wait until after:

--- Quote ---Last modified September 17, 2016
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Hah, thanks for catching that.  ;D

Token:

--- Quote from: skeezix on June 01, 2016, 0008 UTC ---I have a Perseus, but want to do some stuff that isn't possible with the std GUI software.

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Have you looked at SDR-Console?  I do not use it myself, but I seem to remember it having many more features than the Perseus GUI, possibly it includes a logging function?


--- Quote from: skeezix on June 01, 2016, 0008 UTC ---Initially, I want to choose a bunch of frequencies to track & record the signal strength of a signal on a frequency, 24x7. Since carriers aren't exactly _right_ on a specified frequency, need to have a sludge factor of +/- 100 Hz to find the thing nearby and then track it. If it goes beyond +/- 100 Hz, then it can be forgotten about.

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I am not a software guy, so my software skills are kind of basic.

I do basically that same thing you want with WinRadio gear, using the supplied RBASIC to make the radio do what I want it to do.

For example, I wrote a small RBASIC program that allows the radio (I can do it with any of my WinRadio rigs, from the 18+ year old WR-1000i to the G35DDC) to sequentially scan a set of frequencies and then write the results (time, freq, amplitude in dB) to a CSV file.  I can then later open the file in anything that works with CSVs and plot the results as needed.

The way I ignore other close signals is to select CW and a very narrow bandwidth, like 200 Hz or so, so that I am less likely to be impacted by signals more than +/- 100 Hz from my target freq.

An example is here, a scan of past used V24 numbers stations freqs to show activity.  This shows only 1250z to 1430z for that day, but the entire file was for an 8 hour period.  I can make the period anything I want it to be, and have done 48+ hour files.



In the past I did the same thing with a VisualBASIC program and an Icom R-75.

Using the G33 and G35 I have further modified the program to allow RX1 to scan, and record information to the CSV file, and direct RX 2 and 3 to record (either RF or Audio) when RX1 detects a signal over a certain level.  All three RXs must be in the same DDC range, for the G33 that means within 4 MHz and the G35 within 32 MHz.  That bandwidth limitation only exist when I am trying to do queued recordings, not when just doing basic activity and level monitoring.


--- Quote from: skeezix on June 01, 2016, 0008 UTC ---Would also like to get an SDR with the 10 MHz reference to study the frequencies of the stations, incl the time & freq standards. How does WWV's signal shift by the time it gets here?

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My NetSDR has Ref in, and I have modified one of my SDR-IQs to take a reference in (how can be found online).  I always meant to do my SDR-14 also, but never did.  My G35DDCi/X also has Ref in.  I take my 10 MHz reference from an HP GPS receiver.

It is interesting to see the Doppler on various signals like WWV.  Also to see the differences between WWV and WWVH.  And some MW BCB carriers are all over the place.

T!

skeezix:
Very cool Token, thanks . That gives me some ideas. And you're doing pretty much what I want to do.

I haven't seen SDR-Console, but I'll check it out.

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