I don't have direct support for any of those SDRs, but i can suggest to try this:
1) use sdr-console with whichever SDR is best at l-band
2) set sample rate for 500K
3) tune center frequency at 1692.7 (unless your SDR has a spike at 0, then offset by 50KHz (exactly).
4) record IQ file that is a say 4-5 minutes long (must be IQ not audio).
5) give me a link to that file and i will test it for you.
If that works, then the UDP server part of sdr-console can be used to stream IQ data to my decoder.
If you have an LNA, please use it as it will improve things considerably.
Joe