Hi Alberto, I had the same problem some time ago and found it quite annoying to fool around with the 256-color mode and the color palette routines (however i still support that mode for that old 75-M
Hi Walter, did you try using AF transformers to remove ground loops ? There are suited audio frequency transformers in most junk-boxes, even when the ratio between primary and secondary coils is not
Hi Johan and the group, Ten milliwatts are more than enough for 700km on 80 meters, or -in other words " " - power gave solid copy. How about a QRPP HELL revival on 80 meters.. with the PIC driving t
Hello Group, also no copy from ZLhere yet.. but a technical question: Is the transmission from ZL6QH "coherent" over a long period of time, or in other words: Does the phase of the dash & dot frequen
Hi Johan, though I don't have a tall tower (and not even a Mercedes Benz), I heard your 10mW "MICRO" signal on 80 meters signal very clear this evening with 270 Hz filter bandwidth when preparing the
Thanks for the explanation David. I have already sent Jim the information about a new 'two channel' output for PSKxx (implemented in Spectrum Lab) which uses the soundcard for this: Left channel = S
Hello Alberto, Thanks for the report about the hamfest near Milano. As we all desperately seeking for the ultimate miracle antenna, couldn't you convince the EH guy to offer his wonder thing for a ba
Hello Jim and David, I have modified the PSK31 core in Spectrum Lab a bit so it can now produce an on/off keyed "audio carrier" with a few kHz which only needs to be rectified to have the raw phase k
Hi all, During a nice QSO in Jason mode today, and thinking about this and that, a crazy idea went through my brain. Maybe it's only good for the waste bin but how about this: Let the PC produce a di
Hi Alberto and group, I tried to get QRV in Jason from the club station DF0WD this afternoon but only made two "local" QSOs in fast CW with Fabian (DJ1YFK) and Fred (DJ5DI). Also heard PA0VBR who wou
Hello Dave and all, At least it was my first "on air" test with Jason, both for "RX" and "TX". So I'm very pleased to have received an instant answer from Dave who must have been lurking on the frequ
Hello Heinz and group, Nice to meet you. Unfortunately I got your posting a bit too late, but I'll drive to our clubstation DF0WD later today taking everything with me required for some Jason tests.
Hi Alberto and group, Many thanks for the adjustable center frequency, especially for TX ! I think it's important to use a quite high audio frequency, so that all harmonics of the AF signal are outsi
Hi Andy, a phase meter is already under construction here. I first planned to make the waterfall phase-sensitive, but didn't manage the phase shift between consecutive FFT calculations yet (it's esse
Hi Alberto and Group, Only 800 Hz for CW, and that in the worst part of the band (QRM, Luxembourg Effect, DCF39, DLF splatter // intermod) ? No thanks... If we needed an 'official band plan' at all,
Hi Steve, <<< Basically, yes. In fact the audio signal sampled at 11025 Hz is first multiplied with a two-phase "Local Oscillator" signal, with the frequency set for the center of the display (with c
Hi Markus and group, The limit is not yet exceeded, DFCW with 25mHz "shift" is clearly visible. Using these settings to receive: Sample rate = 11025 Hz FFT type = complex, center frequency = 650 Hz (
The carrier on 0.13578 MHz was also very strong here on sunday (599 on a useless S-meter :-) so I first thought it was something "local". But no trace of a modulation over a couple of minutes. Greeti
Hello Walter, Welcome to the LF family ! Though someone may start screaming now: I suggest to get the "Low Frequency Experimenters handbook" from the RSGB, edited by Peter G3LDO. It has a lot of circ
Hi Alberto, Ou jes, rili intresting, ent it meiks mi zink of ze dschermen speling riform sum jirs ego. Sinz zet taim sam words ar ritn laik sei ar spoken tu meik it isier for ze skul schildren. Zenk
