[Lf] [Fwd: LF: Receiving Loops]

[Andre' Kesteloot]

James Moritz wrote:

> [...]
> Regarding loops for LF reception, I was involved in some research
> work at University of Herts some while ago to develop loop
> antennas for LF EMC measurement purposes. We also tried using
> ribbon cable, and found the losses and stray capacitance to be
> very high - we put this down to the PVC insulation, and the
> extremely thin conductors of this type of cable. Almost any other
> type of wire is better; we had good results using the inner
> conductor and insulation of TV type semi-airspaced coax cable; the
> cellular polythene insulation keeps stray C down and has low
> losses, even with the wires tightly bundled together. You need
> quite a bit of coax, though!  Air-spaced windings are probably the
> best possible, but are less convenient mechanically.
>
> Cheers, Jim Moritz
> 73 de M0BMU