Hello LF/VLF! Unfortunately there was a power outage here today and my grabbers went down around noon. Luckily this really only happens very rarely in Austria. When I came home about 2 hours ago, I t
Hello Szigy! It's nice to hear that my grabber is of use for you. Keep on trying! 73 OE3GHB Gerhard JN88hl Am Montag, den 25.04.2011, 08:29 +0200 schrieb Szigy:
Dear group! I'm working on a new DC-CW receiver and while testing, I found a CW-Signal on 137.00 sending "BRK" every 10 seconds. I don't believe that this is a real signal on this QRG rather some mix
James, Markus! Many thanks for your replies! Yep, "BRK" at 408kHz seems to be the source of the signal. Thank you Jim for that hint. BRK is about 50km from my QTH and quite strong here. In front of m
Lubos, Stefan ! Thank you very much for your replies and the report. compared to a few weeks ago. This might have to do with increasing noise but I think the main reason is just worse propagation. Th
Hello LF/VLF! I managed to bring up also the VLF Grabber again, by renewing the BF862 Transistor in the first stage of my VLF E-probe. The D-S channel showed a shortcut. Only this fist stage is locat
Henny! I did another test today and as long as I do not run more than 400mA of antenna-current, it's pretty quiet. Any more current will generate a noticeable noise. 400mA is equivalent to about 60W
Stefan, VLF! In general, I noticed decreasing conditions on VLF during the past weeks. This has on one hand to do with increasing noise and longer noise periods but this alone can not explain the bad
Hello Wolf! The "3Cm" also was known as "Poströhre" and was commonly used in wire based transmission equipment such as amplifiers. When I entered this branch in the beginning of the 80's, there was s
Hi Mal! No, I can't !!!!!! Many people (more or less) active on LF an VLF, say that my grabbers are working very well........so I thought it won't be a problem to receive ZEVS.....but I failed. I tri
Dear Stefan and group! for a CW-QSO. This is just the cleanest QRG here in central to east Europe. Below, HGA22 is an issue and above DCF39 is splattering in. Just a proposal. 73 OE3GHB Gerhard Am So
Hey Mal! Thank you for the hint. I already prepared for the big EMP by buying some canned fish and water in bottles!!!!!!! Do you think a C3M-tube would be suitable? I have got plenty of them..... 73
Hi Chris, LF! Very interesting....I'm also using Stefan's E-probe and on 9khz ist's very sensitive. My probe is more than 15m above ground and I'm also trying to receive the ZEVS-transmissions. I hav
Hello group! Both of my grabbers for LF and VLF are working normally again since yesterday evening. After a distant thunderstorm last week, the VLF grabber failed because of a damaged FET in the firs
Dear group! After a thunderstorm, my VLF-grabber is out of service again. The closest lightning was more than a few kilometres away but the induced energy was obviously enough to destroy my E-probe.
Lubos, Stefan ! Ossi is transmitting with about 1W input and he plans to leave the transmission running when there is no other activity from him. 73 OE3GHB Gerhard Am Freitag, den 20.05.2011, 06:59 +
Mal! In the end it's up to you....weather you quit activity on LF or not. Though I like some of your controversial opinions, I also do not agree with all of them....this is what a discussion is about
Stefan! Your experiments had been observed by Ossi and me. Ossi was just sending a carrier and CW for me to test my new DC-RX when you started. We had a 600-connection and Ossi told me about a signal
Hello group! Ossi, OE5ODL is transmitting a QRP-Carrier around 137775 with about 1W of Antenna input when he is idle. This carrier is for test-purposes. 73 es gl OE3GHB Gerhard
Hello Stefan, LF! Ossi is transmitting his weak carrier using about 1 Watt of antenna input power. I built a little bridged PA and he is using his DDS to drive the board. Usually this beacon runs on
