[Lowfer] VLF Alphas

[Douglas D. Williams]

Tom, Spectrum Lab is WAY more advanced than my skill set (or intelligence
level). ;-)

I just use the Quick Settings to get to "VLF Radio with station markers on
frequency scale".

Here is example of what it looks like at my QTH. The solid vertical lines
are mostly (all?) military MSK stations for submarine comms or time
standards.

https://dl.dropboxusercontent.com/u/33457409/z1203%20ungrounded.JPG

D.

On Wed, Nov 19, 2014 at 3:54 PM, n8tl <n8tl at woh.rr.com> wrote:

> Doug:
>
> The card will sample at 96 Khz.  I also have an EMU-0202 external card
> which will do 192 Khz.
>
> Tom
>
>
>
> On 11/19/2014 09:41 AM, Douglas D. Williams wrote:
>
>> Forgot to mention the maximum frequency you will be able to see will be
>> half the sampling rate of your sound card. So if you have a 48 kHz sound
>> card, you will be able to see up to 24 kHz on Spectrum Lab's display.
>>
>> D.
>>
>> On Wed, Nov 19, 2014 at 9:38 AM, Douglas D. Williams <kb4oer at gmail.com>
>> wrote:
>>
>>  Tom, a cheap VLF receiver can be your computer's sound card. If you have
>>> an e-probe that is sensitive at VLF, you can often connect the receiver
>>> output of your DC power coupler directly to the mic or line in on your PC
>>> and view the output using Spectrum Lab software (free). Spectrum Lab has
>>> some included settings what have common VLF stations already marked on
>>> the
>>> spectrum display.
>>>
>>> -Doug
>>>
>>> On Wed, Nov 19, 2014 at 9:32 AM, Garry Hess <k3siw at sbcglobal.net> wrote:
>>>
>>>  Tom, the VLF captures were made with a rooftop eprobe and sdr-iq
>>>> receiver.
>>>>
>>>> Re: lowfer EAR: J.B., it's coming in well here too but MLS isn't even
>>>> detectable despite being a bit closer.
>>>> --
>>>> 73, Garry, K3SIW, EN52ta, Elgin, IL
>>>>
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