Hi ! Just in the process of installing a new topload that will have to serve on 9kc/136kc/505kc. First part of it brought the self resonant frequency to 300 kcs now. I try to get the rest of it done
Hi Stefan again, no, these towers are 8000 pounds american each and are all very well connected to ground for obvious reasons :-) wolf <<attachment: winmail.dat>>
Hi groupos ! Great to hear about the first established 2way QSO on VLF !! Nice job for sure.Just a matter of time until the first audible CW contact will be done. I got up with first gunlight today a
Hi all D`ers ! DLVLF transmitting now ( 18:15 zulu ) on 8970 Hz in continuous carrier mode. Not matched to resonance, but first E-field measurements show about 5 db improvement.Must put current-meter
Hello groupos ! Yesterday i fried the primary prt of the loading coil. It got soft ( PVC ) and laid over. Now did a quick fix and back on. Maybe Marco gets a reading on me. Later I start working on t
Hi Stefan ! Thanks for the suggestions :-) I think one of the problems with detection in the near field was, that I am transmitting an H-field and DD7PC uses an E-field antenna. I guess that was the
Hi ! I just have a clear trace on DF6NM`s grabber. I changed the QRG from 137.3 to 137.2 and went to continuous carrier mode, it produced a very good clean trace on the grabber there. I now get back
Hello groupos ! I finished a one turn rectangle antenna today. 23m up and roughly 100 m long, the mismatch is still there, but I get almost 15 Amps into the antenna now at a feedpoint of 6 Ohms. But
Hi Mal ! I think You are rite. The loop is only 2300m² . A “full size”- loop with a one wave circumference would have roughly 70 million m², that means I have only a thirtythousandths of
Moin Stefan ! Ich benutze eine kommerzielle MosFet-PA, eine KODA 5000, zwischen dem DDS Synth. und der PA einen aperiodischen 2-stufigen Treiber. Marco konnte meine exakte QRG noch nicht messen, ich
Hi ! I brought my MosFets to 300V, produced nice output, but transformer was not at optimum . Killed a handful of them “black candies”.Carrier on 137.1 is back on to check S/N at DF6NM gr
Hi Stefan ! I just build a new amp with IRFP 460, much sturdier MosFet. But I need lots of cooling. That killed a few black ones ( IRFP 350 ). And I managed to trash my 5kW NF-Amp for 9 kcs, wait for
Hi ! Just finished a new matching for my antenna, instantaneously i was rewarded by a stronger line on the DF6NM grabber unit. Different colour though, changed from blue to green. 73 de wolf
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hi ! Instead of looking at the installation from the experimenters view, i hear someone crying and whining. All things go thru evolution and of course the "know it alls" never make mistakes or are le
