These DATA were submitted on: Wednesday, January, 22, 2003 at 05:10:27
NAME: David Schmocker
CALL: KJ9I
E-mail: kj9i@execpc.com
URL: none
CPU:: P III: PCI 133
CPU Speed:: 1.13 GHz
RAM in MB:: 256MB Crucial
SOUND CARD:: Creative Sound Blaster Live!
SOUND DRIVER:: OSS
VIDEO CARD:: on-board on motherboard
LINUX DISTRIBUTION:: RedHat
LINUX VERSION:: 7.0
LINRAD VERSION:: 00-48
TEXT:
Using only transceiver (approx. 3kHz) bandwidth.. sampling rate 8 kHz both input and output
same sound card. I used the book "Linux for Dummies" which included the RedHat 7.0 CD.
It was an easy install. Thanks to W3SZ for help with appropriate initial set-up parameters.
From the Archives:
Hello all:
Thank you to SM5BSZ, Aaron Hanisko (helped me through my first ever Linux install), W3SZ,
and G0RUZ for helping me very much along the way. I have LinRad running and have sound
coming through LinRad DSP for first time (yesterday night)! Computer configuration is not
my strong suit; I am a humble telecom guy. :-)
My 144 MHz EME antenna consists of 8 x 2MXP28 cross-polarity yagis on 144 MHz EME, although
I wanted to start simple. So currently I use just my single rx LDF7-50A feedline which I
manually (from operating position) relay switch (center of array) from vertical (V) to
horizontal (H) elements fed single-channel into LinRad (and I have a separate dedicated
LDF7-50A tx feedline to the array). I use the Japan Radio Company JRC JST-245 HF (160m-6m)
transceiver on 28 MHz CW-wide position (approx. 2.4kHz passband) behind an SSB Electronics
LT2S: Mark 2 144 MHz transverter for both my rx and tx. So obviously my bandwidth is
currently limited. But now that it is running, I hope to get settings for simple single
channel mode figured out so I can hear weak CW sigs better than naked ear (what I used
100% before LinRad).
I believe one of keys to success is hardware selection (Linux compatibility) so toward that
end, here is what Aaron recommended (and all worked great):
I wanted a dedicated PC just for LinRad:
Motherboard is Pentium III 1.13 GHz PC133, PCI bus equipped with 256MB RAM
(Crucial Technology)
Hard Drive is Maxtor IDE 6L020J1 20GB
CD-ROM is ASUS 52X max ATAPI-enhanced IDE interface
Mouse is a standard 2-button PS2 mouse (type 5)
Video Card is on-board on the above motherboard
Modem is ActionTEC 56K internal PCI call-waiting modem
Sound Card is Creative Sound Blaster Live! (used for both input and output),
common sampling rate chosen: 8kHz initially)
Monitor is a re-used Compaq Presario V400 15", nothing fancy 640-480
resolution, although I
was able to get 800x600 to work also in LinRad.
Operating system is Linux RedHat 7.0 using GNOME and running LinRad in GNOME terminal
emulation program ("GNOME terminal": at lower left near "Main Menu" button). I referenced
the book "Linux for Dummies, (3rd edition)" (ISBN 0-7645-0744-3) to step me through the
Red Hat install, although it really was not very difficult. Note: This book includes CD
set with licensed version of Red Hat Linux. To Red Hat, I added SVGAlib, and NASM by
very easy to follow Leif's step-by-step directions at his web page. And the Linux radio
(LinRad) program: LinRad 00-48.
Initially we tried operating system: Linux Slackware and while that worked generally OK, I
could not get the mouse to behave properly in LinRad under Slackware so in the interest of
being on common platform with many other users, I changed to Red Hat 7.0 and now it is
working great. I will only upgrade to Red Hat newer version if one of you convinces me
why that would be a good idea to disturb a system that is working well.
Thanks again everyone. Now to learn how to be effective in using/operating LinRad.
Dave Schmocker KJ9I
P.S. My future plan is when the SM5BSZ all-stages 144 MHz receiver is ready, I will
convert rx to that full system and then use full V/H separate feeds into LinRad DSP for
optimum benefit of LinRad V/H and wide-band receive capabilities. I still need to design
the complex T/R relay scheme for this.