Am 20.11.2018 13:44, schrieb N1BUG: I will look around for the box which contains that project, maybe I can easily put it back to its original form... if the cat didn't find the box and take too many
Well, finally some results! I have been running two XP computers, one with the original WSPR-X (v0.8 r3058), and the other with the current wsprd.exe (plus dll's). There were no results over the week
Paul On your website the pix of the transformer looks to be a stack of 3) FT240 cores ... assume you're using 77 material? If so, this same setup handled a kW of rf at WD2XNS with no problem ... with
Thanks Jay, Yes, I shamelessly copied your transformer design. it is a stack of three 2.4" cores, 77 material. The cores are Fair-Rite parts purchased from Mouser. Each core was wrapped individually,
Hello N1BUG, When I have blown a FET on Jay's amp design and replaced it / them I have sometimes seen less than optimal gate and drain waveforms from the replaced FET's. A simple meter "diode test" o
Hello Chris, Thanks for the information. I will order FETs and other parts today. It will have to be 32N20 this time, as you know the 34N20 in the large package is long discontinued. While I am at it
Oh, forgot to say congrats on being heard by W3SZ! I believe you are correct about the U3S being only able to use one call sign on WSPR. 73, Paul -- Paul N1BUG 2200m-2m DXCC Honor Roll FN55mf ME Pisc
Paul Okay on no frost ... at the moment ;~) . Water in coax / connectors? Dummy load at far end would prove / disprove that. Running out of ideas ... Jay Thanks Jay, Yes, I shamelessly copied your tr
Hi Stefan, Yes of course. Everyone should have a cat. Mine is a builder's "helper", always sitting at the work bench ready to pull parts or tools from my hand and run off with them. This game is how
Hello N1BUG, Probably teaching granny to suck eggs but if you take off the HV to the drains and just run the 12V supply and the exciter and `scope the gates you will quickly find the dead FET / FET's
Hello Chris, I would be interested in the collective wisdom of the wise ones in this group regarding replacement of FETs. Given they've all surely had a strain when one or more blew, is it really wis
Thanks John, very well! Remember the signal is several dB weaker than in the old days, so it is good to get a decode at all. The decodes were not uploaded, at least not this morning. Did you see the
Hi Paul, Am 20.11.2018 15:55, schrieb N1BUG: On LF I see no change in resonance at all, just resistance. On MF I see a change in resonance but no change in resistance (however with the 1/8 lambda fee
Hello N1BUG, I don't change any that remain functional and haven't had an issue. I do use a very cheap Ebay IR temp gun to check all run similar temperatures and find that a good way to see if one is
Hello Chris, OK after this first time (switching to the 32N20 type) I will try changing just the bad ones. I'm sure there are better FETs these days but I will let someone with more technical knowled
Congrats, Jay and Spiros! 73, Stefan/DK7FC Am 05.02.2013 16:25, schrieb [email protected]: Thanks to all for the WSPR-15 spots on 474.2 kHz last night. Conditions better than 'normal' as several
Thanks to all for the WSPR-15 spots on 474.2 kHz last night. Conditions better than 'normal' as several spots were received from TF3HZ and SV8CS ... both dificult paths from here. SV8CS is a new dist
Had one "hit" in monitoring WSPR-15 on 2200 meters last night: 0315 2 -37 -0.9 0.137622 G8HUH IO81 23 That's a good illustration that the underlying propagation continues despite rising noise levels
Hi all, Thanks to all active LF stations of last night. Best results of stations who received my signal below: Timestamp Call MHz SNR Drift Grid Pwr Reporter RGrid km az 2013-08-14 03:30 DK7FC 0
Hi all, Thanks to all active LF stations of last night. Best results of stations who received my signal below: Timestamp Call MHz SNR Drift Grid Pwr Reporter RGrid km az 2013-08-16 02:30 DK7FC 0
