[Lowfer] Watering hole lowfers

[Douglas D. Williams]

What method do you use to calibrate a sound card?


On Sun, Dec 8, 2013 at 7:04 AM, Garry <k3siw at sbcglobal.net> wrote:

> Haven't looked at the watering hole (185.3 kHz) for some time so overnight
> tuned there using a loop antenna aimed East. Found SJ generally in there,
> but with QSB and frequency wobble and a bit of drift (as sunrise neared the
> wobble stopped). Copy of TAG was poor - couldn't do much more than ID it.
> That was disappointing because the DGPS station on 288 kHz in NL was quite
> potent, leading to expectation of a signal strength boost for the lowfers.
> The attached capture was made using a new HP3500 Windows 7 PC. Haven't
> calibrated the sound card yet so frequencies are only approximate.
>
> 73, Garry, K3SIW, EN52ta, Elgin, IL
>
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