[Lowfer] RX Loop Tuning

[Bill Ashlock]

Hi Joe,

Thanks for the comeback and the good info.

>I've done a bit of experimenting with low-cost wire to convey low->level 
>signals from an active antenna to separately located workshop >receiver. 
>I'm interested in lower frequencies (10-100kHz) and toyed >around with 
>four-conductor telephone-grade wire. The results can be >seen at 
>http://xtrsystems.com/vlf/transmission_line_test .

>I found that the driving and terminating the cable impedances affected >the 
>loss characteristics dramatically. The limiting factor in my test >was the 
>high frequency performance of the transformers.

Did you get around to trying high permeability ferrite cores? I've found the 
'J' (perm =~10,000) material and some others work pretty well at 10kHz to 
well above 1MHz.

Bill


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