Jay, LF,
Am 10.12.2012 17:21, schrieb [email protected]:
[...] Care to share the details of the setup?
Jay W1VD WD2XNS WE2XGR/2
Martin has a 80m long wire in maybe 8m above ground. This wire is
resonated to LF and transformed to the RX input impedance by using a
ferrite rod. A separate LF earth is used. The RX is that one by JA8SCD,
http://icas.to/lineup/idc-136-kit-eng.htm (also used by TF3HZ and DU1GM
and others). He also has a tuned loop antenna with about 8 square meters
cross section area. I guess its mostly beaming to NE/SW. Furthermore he
built a E-H-combiner to optimise the SNR even more. There was a 3 dB
improvement in some of the tests.
I don't know exactly what he is using these days but i guess the system
is not particularly optimised for best US reception. Maybe there could
be a few dB more S/N...
What about WE2XEB? Is that not a motivating goal for him to leave traces
in SA, using traditional QRSS or DFCW? He would surely make that
distance, not to talk about EU receivers...
73, Stefan/DK7FC
|
