Dear James, Thank you for your comments. I did already as you suggested and increased the bias resistor to 10 M. The coupling/decoupling capacitors were increased to 1 uF and the RFC's to 8.2 mH. Thi
Absolutely agree with Jim, those bias resisters are the worst possible value - maximum noise match! Must be at least 10 times that for the small antenna. Intermod can be a problem here too - very har
Dear Roelof, LF Group, Thinking about your mini-whip design, it seems to me it might benefit from modification for VLF use. The circuit is a high Z buffer driven by the capacitive probe - the source
Hello Om Roelof , I,m also interested in your mini Whip . Pse be so kind to mail me the pdf . 73,William PA0WFO -- Original Message -- From: "Roelof Bakker" <[email protected]> To: <rsgb_lf_group@b
Unfortunately, it still has not appeared in print. This is the reason that the information is not available on a website yet. Then please send me also the PDF file describing your active E-field prob
Can someone email it to me? My request must have gotten lost in the pile last night. Thank you, Mike WE0H -- Original Message -- From: hajo.brandt.dj1zb To: mailto:[email protected] rsgb_l
Hello Roelof, I'm just getting caught up on the last weeks mail and found your note. Would you please forward a copy to me. I'm interested in comparing it to the AMRAD antenna and I think I may still
Hello Roelof, Could you send me a copy of your mini-whip antenna ? I work with the selective voltmeters Type SPM-12 for LF reception with narrow bandwiths as you do. For antennas I use both loop and
