Hello folks, Markus and I ran also a slow-voice test this morning. Considering tha fact that Markus' signal is only a few dB above the noise so that even his PSK31 signal did not make it 100% error-f
Hello all, VE1ZZ signal report from Germany (December 28/29, 2000)_ - nothing before midnight - traces can be seen on the 00.00 transmission ('T') - clearly identifyable signal at 00.40, fading out a
Guys, don't worry, This made me laugh, because you could say I am in the same business (writing software professionally since 1964) and I know only too well how easy it is to make a mistake and how y
Hello Lionel, your idea to write a separate program to increase the length by 8 times and the pitch accordingly is great. I think those experiments might also be interesting for others (see mail by D
Hello Markus, Locally, the scheme worked amazingly well, now I'd like to try it out on the air. My preferred freq would be 136.88 kHz shifted zerobeat, 136.95 to 137.5 USB. With 16 mW radiated PEP th
Listening was not feasible before 0030z here due to local noise but no decodable signals were seen at 0030z or 0100z. ... same here in Germany, the noise level was (and still is at 01.43 UTC) too hig
Hello Alan and LF Group, Hi all, VE1ZZ beacon was not visible at 2400z but was a good "O" at 0030< No signs of VE1ZZ this night on my EasyGram recordings that I took every 10 minutes. I saw another s
So you are saying that 1W erp from a dummy load radiates just as efficiently as 1W from a 200 ft vertical for instance.< ... no, surely not! But 1000 Watt from a - 30 dB 'gain' Antenna (that's appro
Petr, immediately download the new Easygram and found it working very well! Thanks for your support of the LF community, currently EasyGram (with the R.S. Horne Spectrogram-DLL) is my favorite proram
Except you are extremely lucky the chance of being heard in VE/W with the average 40 ft vertical or low long wire is nil.< ... and it is exactly that little chance that fascinates me (and possibly o
There must be a book to be written on LF operating including a glossery of terms (O, M etc).< Martin, the book actually *was* written ... by Peter, G3LDO (see http://www.rsgb.org/books/acatalog/RSGB
with existing freeware and internal hardware. There is only a tiny number of well-equipped Eu stations who have BPSK going efficiently.< ... correct, Mike ... but I still remember 1997/98, when only
As far as slow audio goes, I wonder if it would be possible to record 2 kHz bandwidth speech into a .WAV file at 44100Hz and then alter the sampling frequency in the file header to 11025Hz. Playing
... just a brief correction to my table: - normal CW (12 WPM) -18 dB (level below a certain reference level) - PSK31 -15 dB - BPSK (MS25) -18 dB - BPSK (MS100 ET1) -24 dB - BPSK (MS1000) -33 dB (howv
Hello LF-Group, last night (couldn't sleep and was looking out for VE1ZZ ...) I looked a little bit over the fence and read some of the LowFer's messages. Obviously QRSS has found wide acceptance in
Hello LF-friends, woke up this night and had a look on Spectrogram (using Alan's parameters, they seem to perform really well ...). I could detect VE1ZZ's signal only with a "T" at 02.00 UTC and 03.0
Hello LF-Group, I copied VE1ZZ's QRSS transmission here in JO52BH this night with an "M" report, but clearly identified. I will post a screenshot on my web-page tomorrow ... reminds me of the excitem
Andy, Does anyone have a programme to repeatedly play .WAV files in a continuous loop ? This will not be ideal for 'Coherent' data testing, as there will be a discontinuity at the wrap round point th
Hello LF-Group, someone posted an information about an article on speech compression yesterday as a reply to my suggestion, to squeeze normal speech into 800 Hz bandwidth. Accidently I deleted the me
Hello Alan and all other LF-friends, On Sunday an unusual noise aleted me to a PSK31 signal on 137.6, I swapped programs to see Geri just finish working DL7YA on X-mode, and then continue with Wolf D
