If you want to send QRSS identifier at high speeds (relative) , suggest you repeat at 10 or 15 minute
regular intervals. They will then show up up as periodic reductions in carrier level of about 3dB or so.
If fact, tht just may be a suitable task for a new bit of software or a PIC - a mixed QRSSSSSS generator
Andy, Chris,
my QRS software will do the job: just reduce the message to a single "E" or "T" and enable the fast CW ID option.
As a dotlength up to 1 hour can be selected, you can transmit a up to 3 hour carrier followed and/or preceded by the fast CW ID.
73, Rik ON7YD
SDR-IQ is running, with a 20Hz wide waterfall looking in 0.03Hz FFT bin size.
It took 5 minutes for a calibration signal to show up on the screen.
The paint is drying - slowly :-)0
Andy
On 31 December 2010 08:44, Chris Osborn
<[email protected]> wrote:
LF,
I shall be transmitting VLF today starting at 09.00 Z
Freq: 8.971 855 kHz (nominal but close)
Mode : Continuous carrier with occasional QRSS identifier
Aerial: Initially: 40m inverted 'L' at 10m
Later: balloon supported aerial at 50m
Hopefully the system will keep going as the loading coil re-wind
seems to have done the trick now that the varnish has dried.
73
Chris
G3XIZ
