it is NOT just a DSP package for EME enthusiasts.
It is a weak siganl receiving software and hardware package. Applications go from VLF to uWave,
LINRAD is using the LINUX Operating System as its platform. Most of us are not familiar
with Linux, its many versions
and flexibility. Recently, the basic installation of Linux on a standard PC has become quite straight forward. Most so-called
distributions provide good instructions on how to go about it.
The target here is to report on experiences with LINUX, the installation of the operating system and the adaptation to the LINRAD hardware.
Linrad is using 2 or 3 cards depending on the user's preferences. The "normal" usage, with a conventional transceiver is with two cards.
It is only, when using the Delta 44 soundcard that one needs a second card for the audio output because the Delta 44 does not allow the input and output sampling rates to be different. (and some day the Delta 44 output will be fine for the tx side)
A video card is used for the processing of the graphics. Some, if not most of the problems during installation and setup are related to the type and manufacturer of these cards. It could be beneficial to research the internet or inquire other LINRAD users about the usage of potential audio and video cards, the audio cards in particular. ( Look for the availability of card drivers under LINUX )
Users of LINRAD might use different LINUX distributions and versions, different PC's with RAM and CPU's.
If one follows the work that has been done under Linux and by the community of LINUX users in many areas, it is clear that LINUX
has many advantages, though it may require extra reading and effort for some of us, the new users of LINUX.
We like to report here on experiences. In order to do this we need input from users and potential users. That isYOU .
The presentation of the data is experimental at this point and as we move along it might change.
Contributors of Linrad User Data are listed here:You will find here descriptions, questions and answers by Leif, SM5BSZ
[ 2 ] Additional Linrad Application Notes included.
[ 3 ] With Sound Card Mixer Settings.
[ 4 ] Laptop application
Linux Distributions and Versions as per time of sending the data package..
We all like to hear about all your experiences so far and in particular about your setup details, such as:
Computer, CPU speed, motherboard, RAM
You can just type in your text and your input will appear as you typed it. TNX!
For recent linrad reflector Archive see Note on LINRAD Home Page.
Linrad related Links:
Use your "SAVE LINK AS" in your browser to DOWNLOAD. This is not a REAL AUDIO File.
This is the new RPM for linrad 01-00.
This is the new RPM for linrad 01-00.
SM5BSZ'z update info and files structure
SM5BSZ's home page for VHF equipment
SM5BSZ Home page for Linrad
SM5BSZ-DSP radio for Linux on Intel Platforms
Home page for Linrad and Installation
W3SZ's DSP Page
W3SZ's LINRAD webpages
W3SZ, Using software DSP to enhance weaksignal communications
W3SZ's parameter suggestions
DUBUS LINRAD article by W3SZ
Weak signal capability and the human ear by W2RS
EU mirror of Equipment for VHF DX
US mirror for DSP Radio ( LINRAD )
LINRAD help files
On LINRAD Parameters
Notes from the Scandinavian VHF/UHF meeting, July 2003
Comparing Transceivers for Dynamic Range
Large Signal Behaviour of some 144 MHz Radio's
Experimental Methods in RF Design
Notes and Corrections for Exp. Methods in RF Design
The DX Prowess of HF Receivers
The Fairdhild FST3125 used as high level mixer
FST3125M mixer paper by JA9TTT
More on the FST3125 mixer by IK4AUY
Installing SVGALIB-1.9.19 under different Distributions
LINRAD Support: Install Linux distribution
LINRAD Support: Check for and/or Install SVGALIB
SVGALIB Man Pages>
LINRAD Support: Check for and/or Install NASM
LINRAD Support: Install Linrad
LINRAD Support: Check the Sound System
LINRAD Home Page with support links
2 Sound card Installation Notes ( AC97 and Delta44 )
Notes on a 2 sound card system with DELTA44 and ALSA drivers
GNU Software Defined Radio Archives
Paper on Software Defined Radios.
Linux Amateur Radio Software
Sound and Linux
Linux Documentation Pages
Welcome to SVGALib
What is KDE?
Digital Audio for Unix
The Linux Sound HOWTO
The Linux Kernel HOWTO
ALSA, Sound Card, Delta44:
Weak signal/DSP issues:
Low level EME experiments by SM5BSZ and KK7KA.
KK7KA with his views on DSP and EME
Linrad User Pages: