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Re: [linrad] SSB Parameters

Hello, all,

Here are my SSB parameters:

First FFT bandwidth (Hz) [83]
First FFT window (power of sin) [2]
First forward FFT version [0]
First FFT storage time (s) [1]
First FFT amplitude [1000]
Enable second FFT [1]
First backward FFT version [0]
Sellim maxlevel [6000]
First backward FFT att. N [6]
Second FFT bandwidth factor in powers of 2 [2]
Second FFT window (power of sin) [0]
Second forward FFT version [0]
Second forward FFT att. N [7]
Second FFT storage time (s) [5]
Enable AFC/SPUR/DECODE [1]
AFC lock range Hz [150]
AFC max drift Hz/minute [100]
Enable Morse decoding [0]
Max no of spurs to cancel [100]
Spur timeconstant (0.1sek) [5]
First mixer bandwidth reduction in powers of 2 [4]
First mixer no of channels [1]
Baseband storage time (s) [200]
Output delay margin (0.1sek) [5]
Output sampling speed (Hz) [10000]
Default output mode [1]
Audio expander exponent [3]
A/D speed [96000]
Check [1110107]

Change only between brackets.
If file has errors, Linrad will ignore file and prompt
for a complete set of new parameters

linrad-01.21

-----end of SSB parameters


Here are my wcw parameters:

First FFT bandwidth (Hz) [100]
First FFT window (power of sin) [3]
First forward FFT version [2]
First FFT storage time (s) [20]
First FFT amplitude [1000]
Enable second FFT [1]
First backward FFT version [1]
Sellim maxlevel [6000]
First backward FFT att. N [6]
Second FFT bandwidth factor in powers of 2 [4]
Second FFT window (power of sin) [4]
Second forward FFT version [2]
Second forward FFT att. N [10]
Second FFT storage time (s) [15]
Enable AFC/SPUR/DECODE [1]
AFC lock range Hz [150]
AFC max drift Hz/minute [100]
Enable Morse decoding [0]
Max no of spurs to cancel [100]
Spur timeconstant (0.1sek) [5]
First mixer bandwidth reduction in powers of 2 [4]
First mixer no of channels [1]
Baseband storage time (s) [150]
Output delay margin (0.1sek) [5]
Output sampling speed (Hz) [6000]
Default output mode [1]
Audio expander exponent [3]
A/D speed [96000]
Check [1110107]

Change only between brackets.
If file has errors, Linrad will ignore file and prompt
for a complete set of new parameters

linrad-01.25

With the SSB parameters I get a delay on the order of 0.5-0.7 seconds or  
less.  I am not sure of the delay with the CW parameters listed above, as  
I didn't check it today, but generally I have had delays of 2-5 seconds  
[which are not a problem for my purposes].

I post them with no representation as to their optimization.  Rather, they  
are being posted to provide an object for criticism, and to provide a  
framework for the discussion of the tradeoffs and consequences of specific  
parameter choices.

These are running on this system:

CPU::  Pentium 3
CPU Speed::  1 GHz
RAM in MB::  770 MB
SOUND CARD::  M-Audio Delta44
SOUND DRIVER::  OSS/Linux OSS 3.99.1g
ADDITIONAL CARD1::  SoundBlaster PCI
VIDEO CARD::  ATI Radeon 7000
VIDEO DRIVER::  Rage 128
LINUX DISTRIBUTION::  Red Hat
LINUX VERSION::  8.0
KERNEL VERSION::  2.4.20-28.8
GCC VERSION::  3.2 20020903
SVGALIB VERSION::  1.9.19
LINRAD VERSION::  01.25

Hope that is of some interest, and

73

Roger Rehr
W3SZ


-- 
Roger Rehr
W3SZ
http://www.qsl.net/w3sz
LINRADDARNIL
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