Oh my bad. I know Amtor is fsk, but thought that ros-mf is non-lineair like PSK31. Learning all the time. Is the protocoll open-source so I can understand it and program it in my PIC? I know, I know.
I had the same problem initially the first character of every transmission would be garbled. In my case this was because after starting the transmitter (with a mark) the first character was immediate
Hmm might this be because in the old days (amateur) RTTY was done with the rig in LSB mode using AFSK? With mark at 2125 Hz and space at 2295 hz and mark being the idling position, when using LSB the
in fldigi It is just RTTY with custom settings.... -- Ceterum censeo Carthaginem delendam esse From: [email protected] Gary - G4WGT Sent: Thursday, March 07, 2013 18:07 To: rsgb_lf_group@blacksheep
Hi Marco, Thanks for the report. 73s Minto pa3bca -- Ceterum censeo Carthaginem delendam esse From: [email protected] Marco Sent: Monday, March 04, 2013 22:43 To: [email protected] rsgb_l
Hi Stefan, Yes that was me.. I saw you typing that text and decided to respond. I will be QRV later tonight if I can get away from other responsibilities (), and an RTTY QSO should be possible, all b
My PIC software now does the following when starting a RTTY transmission: * Start the TX (mark) * wait 500 ms to wake up the receiver to the mark * send two NULL characters to get the receiver in syn
Hi Stefan, Your (and mine) RTTY signals on Twente WebSDR were obviously not good enough for a decent QSO. Yesterday you were much stronger at the same time, definitely good enough for a comfortable Q
I decode SM6BHZ on 478.165, 45.45 Hz 170 Hz shift.. DE SM6BHZ SM6BHZ JO57WQ GOTENBURG SWEDEN SM6BHZ SM6BHZ K ISRYN ZI TTZEAE A 73's Minto pa3bca -- Ceterum censeo Carthaginem delendam esse --Original
I am currently resticted to modes I can program myself in the PIC... AMTOR should be easy (I just have to find the encoding protocoll, but it seems very simple) I have not yet found a protocoll descr
Receiving anything at my QTH would be a miracle (lots of QRM). I cannot detect your signal on Twente WebSDR either.. 73's Minto pa3bca -- Ceterum censeo Carthaginem delendam esse --Original Message--
Ha Yes that is also what I remember from my early HAM days: in 1979 I wrote an RTTY program for my apple II, and I also inserted plenty of lettershifts. One single lettershift missed by the receiver
Might have been me... I can however decode my own signal via Twente WebSDR. As for rtty settings: My PIC program now uses: SendRTTY(478160, 50, 85); So space freq = 478160, 50 baud, shift 85 Hz so ma
I have been experimenting too with an RTL-SDR dongle now for a few weeks. I currently use a transverter to listen to lf/mf/hf. This transverter upshifts the spectrum with 100 MHz. Although the RTL-DS
Hi Graham, So maybe I should order another (type) of RTL2832 dongle. The one I have certainly is wayyy less sensitive than my ft897 on 2 and 70. Probably the type of tuner is different. Well for the
Hi Graham, Interesting 0.1 uV is not bad. Should be good enough. What type of tuner does your dongle have btw? E400 or R820T. Maybe you mentioned it but then I forgot. I just popped the hood on my do
Hi Graham, Yes I have the slider set to (nearly) maximum on 2 and 70 J With a direct compare (same antenna, same signal) the dongle is definitely less sensitive than my 897, I suspect (but have not s
