[time-nuts] 60kHz Loop antenna

paul swed paulswedb at gmail.com
Mon Oct 4 17:16:10 UTC 2010


Understood. I have gotten better with the loops over the years.
Someone mentioned 1000 strand phone cable.

On Mon, Oct 4, 2010 at 12:52 PM, J. Forster <jfor at quik.com> wrote:

> 220 pF is about 8' of coax.
>
> -John
>
> =============
>
> > The coil with 50T and 5 foot diameter is 11.5mH.  It would take about
> > 220pf
> > of self capacitance to make it resonate at 100KHz.
> >
> > Anyway, if the capacitance is too much, it's all in the way you splice
> the
> > ends together in the conduit box.  If you want, you can make the loop a
> > single
> > turn with 50 parallel conductors.
> >
> > -Chuck Harris
> >
> > paul swed wrote:
> >> I have used 25 pair telco cable.
> >> The issue that can happen is the inter pair and strand capacitance can
> >> exceed the resonance frequency of the loop. Or resonates below 60 KC.
> >> Just a
> >> heads up.
> >> Using a 3 foot loop was not a problem.
> >> Regards
> >
> > _______________________________________________
> > time-nuts mailing list -- time-nuts at febo.com
> > To unsubscribe, go to
> > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> > and follow the instructions there.
> >
> >
>
>
>
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
>



More information about the Time-nuts_lists.febo.com mailing list