...and the tiny twisted pair cable can be wound several times through a high mu ferroxube core! Attached a photo of the new antenna, in about 30m above GND at the university of Heidelberg 73, Stefan
Dear VLF, Full of euphorism i want to tell you about my new VLF RX antenna. You know my active antenna for VLF which is in use at my grabber: http://www.iup.uni-heidelberg.de/schaefer_vlf/8,97kHz%20a
Hello Stefan, I'm about to complete the construction of an E-probe based on your design (the original one, with both BF862 on the same board). The resulting PCB size is not that small as I preferred
Hello Stefan! This is perfect idea! Thanks for information about your new VLF antenna model. I continue with my tests of antenna as well. My last model use cabel CAT7 (4x twisted pair cable shielded)
Hi Roger, Am 24.11.2010 21:43, schrieb Roger Lapthorn: Hi Stefan, I am unclear about the connection back to the shack. Are you using three wires (in the CAT5 cable) then to feed power, ground and sig
I have had the idea to separate the E field active antenna into a front end and the rest of the circuit can be left in the shack! The front end consists out of the first JFET, the 1MOhm and 10 MOhm
Hi Daniele, Am 30.11.2010 07:40, schrieb Daniele Tincani: Hello Stefan, I'm about to complete the construction of an E-probe based on your design (the original one, with both BF862 on the same board)
