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[linrad] Questions and assumptions [by OH1ZAA - Chapter_0]
Questions and assumptions [by OH1ZAA - Chapter_0]
Linrad is an extremely interesting development, and it is
great to see many of the former VHF/UHF/SHF pioneers working
with a new type of challenge/tool for weak signal reception.
There is much more behind the visible detail, and for the
newcomer it is very hard to know where to begin. My guess
is that Leif, SM5BSZ, is investing at least 14 hours a day
into this development, and he has been doing that for many
years now, possibly adding up to 30,000 hours. Also he is
admirably commenting on the majority of the emails passing
through the 'Linrad' list.
This is my first time to post through the list. However, I
have been communicating with Leif directly over the last two
years, and I have done a couple of attempts to get Linrad in
action on several PC's. Initially it has mainly been a lesson
in Linux, and between failures there have been long breaks...
During last weekend's RATS VHF/UHF/SHF-meeting in the Aland
Islands it was good to see Leif's solid 'Linrad'-setup in full
operation, and we did some thorough measurements on a FT-857D.
So besides being the ultimate receiver for weak signals in very
difficult environments, it is also an instrument to characterize
the performance of commercial or homemade communications gear.
When reading through all the 'Linrad' documentation and related
QEX-publications, one gets easily overwhelmed by the huge amount
of information. However, I have noticed that I get to know more
and more, and maybe soon I will know "too much" to be able to
the numerous questions that I have had before. Therefore I thought
that it would be good to make maybe a dozen short email chapters
with issues related to the interpretations of 'Linrad' features,
and maybe a guided approach for the newcomer, who will be asking
possibly the same sort of questions. This is chapter 'zero'; more
of these will follow at random, but in correct numbering
In the meantime I wish you all good luck with Linrad experiments.
73, "Zaba" OH1ZAA/2