Hi Edgar, Stefan and Wolf,
Your help is muchly appreciated. Edgar seems to have no problem
switching between qrss60/120. I tried Stefan's settings but still
no sigs on the screen.
The monitor scope is showing a nice little green line with some
random noise for QRSS60 and 120.
It seems the signal is getting in but being lost by the computer/sound
card for QRSS120. Perhaps try another computer?
73 & TNX
Joe VO1NA
On Mon, 25 May 2015, wolf_dl4yhf wrote:
Hello Joe,
I will check the QRSS120 configuration soon, maybe I had copied the settings
from a computer where the input level (soundcard) was rather high, and the
signal in your case is much weaker.
When turning on the "input monitor" (scope-like gadget), does it show a flat
green line, or a noisy-looking waveform ?
Flat line -> not good (wasting dynamic range of the soundcard's A/D
converter)
Green waveform -> ok
Red waveform -> not good (not much headroom before clipping)
Details: http://www.qsl.net/dl4yhf/speclab/circuits.htm#monitor
Cheers,
Wolf DL4YHF .
Am 24.05.2015 15:01, schrieb [email protected]:
Dear Group,
A QRSS60 detection at 5.2 km is the best DX for yours truly to date.
Although there was a detection at 7 km, this was probably via conduction
from a nearby mains line. The RX is a DK7FC VLF probe and Spec Lab
on a laptop.
The next logical step is to try QRSS120 to get past the 5.78 km boundary.
To my abject dismay, when doing: Quick Settings/ Slow Morse
Reception(QRSS)/ Slow CW, 120 s/dot/ Enter
AUDIO centre frequency (8277 entered) / OK/no;
the spectrum screen scrolls across completely blank and the real time
spectrum on the right shows a flat line.
Going back to QRSS60, all is just fine.
Am I or the computer malfunctioning again?
Many thanks
Joe VO1NA
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