Many thanks to all those who provided advice on this. I will pursue the matter
when the weather is better. At present it is raining and the static is peaking
15 to 20 dB above DCF so I am not surprised that I can't identify any amateur
signals.
John
F5VLF
*********** REPLY SEPARATOR ***********
On 25/08/2008 at 19:40 Alan Melia wrote:
>Hi John. It depends what you are trying to do ?? It sounds like you are
>trying to calibrate the loop effective height. Jim, Christos, and Dick
>Rollema have done some work on this Dick recommends a toroidal transformwe
>slipper onto an outer wire. I believe this will induce an accuarately known
>current in the main loop and so facilitate a calibration. I am not sure I
>have the get available in the mail archive but you may find that Rink
>Strobbe has archived it in his tech papers (or maybe aerials) sections.
>
>Best Wishes to You and Rosie
>Alan G3NYK
>
>
>
>----- Original Message -----
>From: "John RABSON" <[email protected]>
>To: <[email protected]>
>Sent: Monday, August 25, 2008 4:15 PM
>Subject: LF: Sensing loop
>
>
>I have a 2 metre square 8 turn loop which is series resonant on 138kHz. To
>calibrate this I am thinking of adding a single turn loop which can be fed
>with a known current and therefore produce a known magnetic field. Should
>this turn be within the main winding or should it be a much smaller loop at
>the centre?
>
>John
>F5VLF
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