Hi David,
> BTW. A few days ago you reported my beacon as 503.69. You were right.
> When I went to check the DDS I found that it was indeed 10Hz low. - Now
> corrected. Sorry.
In the past weeks, I had some trouble with the 24bit soundcards in use
with my 500kHz DCrx with IQ output. First the audigy2ZS PCI card
crashed nearly every night. When I changed the soundcard to a 24bit
PCIe card on sunday morning I was not aware of the poor quality of
this card: For getting the 22050Hz sample rate in spectrum lab I have
to set the sample rate calibration to 22200Hz. This was the reason for
my inaccurate frequency readings on sunday/monday night.
> If I have some time Friday night - Saturday morning I will change the
> transmitter and try 100mW (+13dB) so I can monitor the difference on GM4SLVs
> grabber. I will not be able to run the linear mode PSK31 during that time
> as the
> higher power TX is class D
I will listen for your signals, it may be interesting to see the
difference in signal strength.
73
Hartmut
|