Paul is asking who of the RX stations (except Wolfgang and me) has used a noiseblanker or clipper? Please a short info about the settings... 73, Stefan
Hi Brian, I think you mean for RX? ;-) This is what i am currently using: http://www.iup.uni-heidelberg.de/schaefer_vlf/8,97kHz%20active%20E%20field%20antenna%20by%20DK7FC.pdf The arrangement is visi
Hey Ossi/OE5ODL, Mni tnx for the test signal! You are the first station that appeared there, within the first active second on the web! :-) I stared at the screen as if this would be signals from Ven
Hi Mal, LF, As mentioned the grabber is not optimised yet. Would be a wonder if it is perfect on the first try ;-) But i know what is the problem: A bad contact at the audio plug. So i have to use th
Hello Vlad, Nice to meet you here. I think it is our first contact here. Are QRV on RX and TX or just on RX? I hope for a QSO soon, in DFCW-3 of course ;-) I will be active in the first weekend of Se
Alex, Your QTH and RX sounds interesting! It is a real benefit not to have mains hum near the RX! You said you can receive EU LF BCD stations: Please, what S/N is DLF (Deutschlandfunk) at 153 kHz (AM
Dear LF, If there is something like an "extended" or more detailed official bandplan for 137 kHz, what is the center of activity for QRSS-10? Is it 137,7, like QRSS-3 or is it normally more in the 13
Thanks for all answers so far. Alan, i think that filtering is essential for me since DLF (153 kHz, 500kW) is just 40km distanced. I am afraid that the amplifier gets overdriven else. For DCF39, whic
Mal, LF, In a few weeks i will have my "office antenna". It is a horizontal wire, about 35m above GND and 70m long, hung up between two buidings of the institute. There is a mains supply of course an
Hi Michael, Markus, VLF, Well, time and frequency absolutely corresponds with my transmission so i would say it is a positive reception. Anyway i think we should do the test again, sending a message
Yes it is. As often mentiones (even on the grabber site) there is a bad contact, probaly at the audio plug that causes this "QSB". The bug will be removed within the next 3 days. 73, Stefan/DK7FC Am
Dear LF, Yesterday you gave me some ideas about which filter can be used befor the final stage of my active antenna for 137 kHz. Maybe there has much to be optimised but today i got a first result th
Hartmut, The S/N of your received signals is excellent. Pse, where can we find a description of your RX antenna and RX? 73! Stefan Am 15.08.2010 09:14, schrieb Hartmut Wolff: Updated my website http:
Hi Jim, Are you QRV on 8,97 now? If so, tell us some data (L, P, L dimensions, ....) 73, Stefan Am 07.08.2010 12:11, schrieb James Cowburn: I’m running up in the ether on the “El” (
Hi Roger, As written below, the distance was 49,6 km. The signal was detected by Michael Oexner (no callsign) in JN49BF ,who sent a mail with a screenshot yesterday. The reception was a single dash,
Hello Alex, All very interesting! LU1DOW confirm my error in ARGO last night : +0.2 Hz, I confirm this value receiving weak signal 153.000 Europe Broadcast 1 hour ago. 153 kHz is Donebach, DLF. You c
Alex, If you use SpecLab, you can display at least 10 Hz in 120 sec dot mode on a normal monitor (if choosen "1 pixel per FFT bin")! 73, Stefan Am 31.08.2010 03:30, schrieb Scott Tilley: Hi Alex I re
Roger, For measuring the output power take a 50 Ohm dummy load (50, not 55 Ohms or so) and measure the peak voltage with an oscilloscope. Type this into the excel file and calculate the output power
Hi Scott, Yes. The more rocks the better the result. The lower the ground conductance, the deeper the flow back current and thus the larger the loop area. Near my hill/mountain (is 520 m ASL a hill o
