Alberto wrote :
> Something is broken again with this list. I see that there some messages
> present in the archives that haven't reached
> me. So if you wrote on the list a message directed to me and I did not reply,
> most probably I haven't seen it.
> Please resend such messages, specifying as Cc: [EMAIL PROTECTED] Thanks.
>
> 73 Alberto I2PHD
>
resending my last message to the WinRad list as of 2nd Jan 2008,
slightly edited :
Hi Alberto !
first a Happy New Year to you. Version 1.30 just downloaded yesterday,
very fine piece of workmanship !
first impressions :
AM and ECSS are a nice addition to Winrad, formerly I used your SDRadio
for it, but SDRadio lacked the DLL-interface and its ECSS-mode had a
somewhat high lower cutoff frequency, the AM mode had a better "sound"
for music.
AM :
AM works nice, maybe the width of the filter should be more than the
maximum 4.0kHz at 48 and 96kHz samplingrate (ASIO), only at 44.1kHz I
can get 5.5kHz. Why that?
ECSS :
Testing the new ECSS mode on Winrad 1.30 I found the same problem as
Philip G7JUR on my Behringer FCA202 at 96kHz sampling with ASIO:
Philip Lock wrote:
> Hi Alberto.
>
> Many thanks for the latest version of Winrad.
> The only problem I have found is that the ECSS mode does not work when
> using my Delta 44 Soundcard in ASIO mode.
> Winrad stops and the spectrum and scope freezes but Winrad does not
> crash and by clicking on stop then start it starts running fine.
> If I use 16 bit mode for the Delta 44 then ESCC works fine.
>
> Thanks Philip g7jur.
>
At my computer (3.5G XP Pro SP2) I had to switch down to 48kHz (ASIO)
samplingrate to get the ECSS running, at my standard 96kHz all other
modes did very well, don't know what's the difference.
DRM mode :
Today the conditions on shortwave were good to test the new DRM mode of
WinRad 1.30. My configuration is :
Softrock 6.2lite for 40m, VFO Cypress Cy27EE16 and homebrewed DLL for
20kHz to 30 MHz RX-frequency. I use two soundcards : soundcard_1 for
WinRad is Firewire-FCA202 at 96kHz, soundcard_2 for DREAM is USB-Edirol
UA-1EX at 48kHz.(no VAC) The I/Q output of the softrock receiver is
splitted to run both soundcards (and both programs) concurrently. By
this configuration I can easily switch the input of DREAM to the
(0-12kHz) output of WinRad or to the I/Q output of the Softrock-RX.
This afternoon I tested on 6.015 MHz TDPRadio from Belgium (15-16h UTC),
it had a maximum SNR rate of 31.5dB by directly connecting DREAM (by the
EDIROL) to the Softrock without WinRad. I switched to the DRM output of
WinRad and got an SNR roughly of 6dB less. Then I reduced the WinRad
samplingrate to 48kHz (ASIO) and the SNR dropped more than that, maybe
another 6dB. The 44.1kHz samplingrate showed a rattling noise at the
DRM-output, not the usual white noise. (other modes run well with
44.1kHz). I repeated the combinations of samplingrates and inputs a lot
of times and the difference of abt 6dB could be reproduced. Best results
could be achieved with 96kHz at Winrad, at rates below that I sometimes
had considerable problems to decode DRM at all. Tests on 3.995MHz DW,
5.955 RNW and 5.990 MHz RTL showed the same results. Maybe I shall
change any option at DREAM to get rid of that 6dB?, i don't know.
(I do not have VAC to test digital connections)
The DRM mode output can be used,too, to receive HiFi AM (like my old
Lowe HF150 did) if the Station is transmitting more than the 5kHz
standard. There are some using up to 8kHz Audio-Bandwidth...
Replay of files :
The clickable slider is a very much anticipated function! Would it be
possible to display the time relative to start or -alternatively- a
percentage of elapsed time beneath the slider ? At large files (a
contest uses 1.3GByte per hour at 96kHz/16Bit) this would help.
After all, the new Version 1.30 is an improvement of an already
outstanding program! Nothing comes close. Thank you, Alberto !
73 and a Happy New Year to us all!
Tobias DG3LV
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