Hello Mike! I had exactly the same problem with overheating and burned wires a week ago. So for this reason I would be interested which kind of "watchdog" you installed. Could you please make the sch
Servus Toni! Hier ist OE3GHB...ebenfalls Gerhard und wir hatten auch ein QSO.... Weil ja DK6NI von einer möglichen Verwechslung schreibt, weiß ich jetzt auch nicht so genau wen Du meinst....... AWDH
Dear Dave! Many thanks for your report. I appreciate this much. I'm using a Marconi Antenna (13m vertically) with multiple topload-wires up to 50m long. Capacitive load is about 650pf and loading coi
Dear group! I have set up a temporary grabber under http://grabber.mine.nu . It covers the range from 137670 to 137820. It will update every 2 Minutes. The Antenna is my Marconi which I usually also
Dear group! I have moved my temporary and experimental grabber to http://members.aon.at/grabber The page should auto-update every 3 Minutes. I do not plan to run a 7/24 grabber like Markus (DF6NM--ma
Hello group! I have now further improved the sensitivity on my grabber and will keep it running for a while. It could be of special interest for stations which are too close to Markus DF6NM. Unfortun
Henny! Many thanks for the report and the picture of my signal. I was looking at the grabber of Andrey and noticed a weak carrier on my QRG, that's why I stepped up for half a cps. In addition I noti
Hello group! I know, it's a little bit "off topic" but if anyone is interested: Today two big MF-Antennas (585kc and 1674kc) located very closely to Vienna had been taken down. The smaller tower was
Hello Stefan ! 850nm is visible too! It by far not that bright than "visible" light is, but nevertheless, still visible. 850nm is the typical wavelength used for MultiMode Fiber Connections. On a 50-
Hello Jean-Pierre! Seems to be Ossi, doing some QRP-Test with my grabber: members.aon.at/grabber It is now on QRSS60 for test purposes. See attached picture. 73 OE3GHB Gerhard Am Dienstag, den 16.03.
ge Mal! I agree, activity on 137 is poor in the moment and even someone is active, it is in a "automated"-mode. This might have to do partially with the poor conditions. But on the other hand it has
Hi Dexter! I also own a W/G Selective Level Meter, it's the SPM-33 and it also produces a (false) signal at exactly 2000Hz. Seems to a specific problem of W/G equipment. 73 es gl OE3GHB Gerhard Am So
Hello group! After being offline for more than two weeks because of private reasons and also because of a broken antenna my grabber is online again. I try to keep it running 7/24, mostly at QRSS60 in
ge Marcelo! I agree with some others who responded to your email: Moving up to the TA-window (137,777khz / +-3Hz) would be wise! There are always some grabbers active (24/7) in this segment. Mine (se
GE Mal! Calm down! I also have considered to start something on 9kHz....as Ossi OE5ODL did! After some brainstorming we both found out that the overall effort to be QRV doesn't pay for it. (Yet and f
Hi Stefan! I wasn't following the discussion too closely yet but I had the best experience with pre-amplifiers when the very first stage is "passive" and not an active device as in your schematic. So
Marco ! The 100nF is just to remove DC from the pad (6V).... I wonder if static cracks will induce enough voltage to clamp the diodes but I will find out as Roelof said in his post. Roelof ! It's not
Alan ! Thank for your reply. I don't mind you to post this picture wherever you like. It would be interesting for me to get a clue where it could come from and to know, where to search for it. 73 es
