Hi Peter, How sensitive is the balanced probe to shielding effects (trees, houses)? Any difference to the E field probe? Where do you have the INA111 from? What are the differences on 137 kHz? Is the
Many thanks indeed, Peter. 73 Chris You wrote: ... Sorry I missed your earlier posts in the change to Yahoo Groups. I'd like to try a balanced probe - are you using the same circuit (with INA111) as
The problem is that I'm observing to a lot of interferences/microphonics "from behind" when touching the battery located inside the house. Did you try - just for a test - to omit the voltage splitter
Hi Clemens et al. Thanks for all those hints! Finally I think I've found it. It's somewhat trivial, should better write embarrassing (sic!). I used an old 9 Volts-block for testing. Since it ran out
Moin Stefan, Don't know yet. But see those screenshots. There are much less local interference lines visible. Any difference to the E field probe? This IS an e-field probe, but a balanced one. Got th
Gude Peter, LF, Any difference to the E field probe? This IS an e-field probe, but a balanced one. Got the idea from there: http://www.vlf.it/immagine/minimal_E.html (tnx) I know it is a E field prob
Hi Stefan, Do you have further useful ideas for constructors? ... This project is still at development stage. See my last posting. The transformers are from "Oppermann", rated from 2.5 kHz up to 250
Hi Peter Sorry I missed your earlier posts in the change to Yahoo Groups. I'd like to try a balanced probe - are you using the same circuit (with INA111) as on the www.vlf.it site or have you modifie
Hi Chris, You wrote: ... Sorry I missed your earlier posts in the change to Yahoo Groups. I'd like to try a balanced probe - are you using the same circuit (with INA111) as on the www.vlf.it site or
Hi Peter, Unbelivable! I just found the INA111 also at RS components and even Reichelt in Germany has it available! Now i consider to try a similar design. I'm still not sure if i'm loosing some dB h
