[Aavso-sid-list] VLF/SID monitoring

[Siddhartha Jain]

All I have is my 15' x 5' balcony to mount all my antennas from VLF to WiFi :-)

Measuring the capacitance at the loop antenna's feedpoint, I found out
that the ~16 feet cable with BNC connectors at both ends that I am
using to connect the antenna to the PC introduces about 1000pf of
capacitance. Should I take the feed cable's capacitance into account
when adding capacitance to the antenna's feedpoint?

And what should be the sound card's sampling rate? Speclab displays
capability upto 192,000 Hertz. Why not use the soundcard at the
maximum capacity?

73, F5YG de WV6U

- Siddhartha

On Wed, Aug 6, 2008 at 2:10 AM, Jean-Pierre Godet <godetj at wanadoo.fr> wrote:
> On Tue, 5 Aug 2008, Siddhartha Jain wrote:
>
>> ...
>> SpecLab. What kind of hardware do you have connected to SpecLab?
>> ...
>
>   A 250 feet long about 40 feet above ground Marconi, tuned and impedance
> matched, the best I could, by a band pass filter composed of two LC
> resonnant circuit coupled together (19 - 23 kHz at -3 dB). That's all, no
> preamp needed. And of course with all the necessary lightning protections.
>   You see, I used coils, some sort of circuit wich emulates gyrator with
> copper.   ;-)))
>
>   A copy of my SpecLab config file is at the end of this post. Just edit
> it to remove the part above "CUT HERE", save, rename as something.usr,
> move in the SpecLab root directory, call with Quick Setting ==> Load and
> Create user defined entries.
>
>   Best regards !
>
>   Jean-Pierre
>
>   73 = WV6U de F5YG +
>