Hi Christophe,
I am doing much the same thing with my users_hwaredriver.c, but for a
Kenwood TS-2000. I am sure I would find it useful to see your code;
could you send me a copy of your users_hwaredriver.c ?
Many thanks!
-- 73, Joe, K1JT
Christophe Huygens wrote:
Hi folks,
just
Leif and all --
It has been some time since your email of October 18, but I have finally
found time to think about some of the suggestions you made for
optimizing Linrad parameters for use with WSJT/JT65.
You suggest using fft1 BW=80 Hz, sin^3 window, first mixer BW reduction
parameter=3, a
Hi Leif and all,
Thanks for your answers to my questions posed on October 31. Your
reward is a new set of questions about Linrad features ... :-)
1. The Network capability does not seem to exist in recent Linrad
versions. Is this correct, or am I missing something about starting it up?
Hi Leif and all,
Another simple question:
Is there an easy way to eliminate the new S-meter graph from the screen?
I do not find it useful, and would prefer to have its screen area
available for other things.
-- Joe, K1JT
#
Hi Leif,
Thanks for your quick answers, which will be very helpful to my current
effort to build a JT65 decoder to work directly with Linrad.
A brief response to your last point ...
... I would like to be able
to make both waterfalls pause (or at least go black) when one is
transmitting,
Hi Leif and all,
- I would want a timestamp in there somewhere. It might be derived
from block_no, but why not make it explicit ?
I do not see what it would be good for. Why do you want the clock
from the master while there is another one in the slave?
Surely I could add this, but there
Leif and all,
Would you agree on milliseconds since midnight? From JDB I
learned that a double with seconds since Unix epoch
would be a bad idea since conversion may be difficult on
non-PC platforms. (It is the internal time format within
Linrad however)
Yes, milliseconds since UTC
I have some time to kill this evening, and I find myself wondering
whether anyone else on this list has experienced anything like the
following problem.
When I put a Linrad system into regular use back in October, I noticed
that if I left Linrad running continuously, it always happened that
Dear EME Friends,
A month ago I mentioned here a piece of SDR software that I
have been working on, tentatively called MAP65. Many people
have written to ask for more details. I have consequently
placed a status report and a MAP65 screen shot on the WSJT
web site. Links to them are given
Hi Leif,
Thanks for the reply. Yes, I am using a somewhat older Linrad
version, 02.20. It is the one I was using last November, and I
thought to bring things up as they were working before, and then
upgrade my Linrad version when all is well.
It appears that I may have lost communication
Leif, Zaba, and all,
Many thanks for the clear explanations!
-- Joe, K1JT
#
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He Leif and all,
Today I made my first tests of Linrad's network broadcasting
capability. I installed Linrad 02.34 and checked it out. All
seemed to be well. I selected N on the main menu to
initialize networking parameters, and then selected format 4
(16-bit raw data) for output. After
Hi Leif,
Thanks for the reply.
Something is wrong. Presumably the reason is the same as for
the other errors you observe.
...
Check for memory usage first.
No swapping is taking place, so I don't think it's a memory
issue. I will study the problem more and report back if I learn
Leif and all,
It turns out that my network speed problem had a simple cause.
The computer running Linrad is connected to the LAN through a
rather old 10 Mbit/s hub/repeater. Therefore it maxes out
around 1.2 MByte/s, too slow for 4 channels at 96 kHz in any of
Linrad's network modes except
MAP65 Status
I have now established the necessary network connection
between Linrad and MAP65. So far, I have found nothing to
prevent a happy marriage!
MAP65 receives a full 90 kHz of xpol signal from Linrad,
finds all the JT65 signals in that bandwidth, matches the
linear
Hi Leif,
Moreover, one will almost certainly want separate screens
for Linrad and MAP65 -- both of which generally use most or
all of a normal-size screen.
Yes, I agree - but those who have only one standard computer
should know it is possible - if it really is;-)
When MAP65 is available,
Hi Leif,
The combination works OK, and but a significant number of
packets (around 400 in each minute, or slightly more than 1%
of the data) are dropped during MAP65's most
compute-intensive parts of each minute. Since plrs does no
significant computing, I imagine that the problem may be
Hi Leif,
I have been thinking more about the Linrad polarization
questions that I raised here two weeks ago.
I wrote:
Suppose they [the feedline lengths in X and Y channels]
are not well matched. In other words, suppose that
the complex gains and signal delays in the two polarization
To: HB9DRI, IK7EZN, W3SZ, W5UN
Cc: Linrad mailing list
From:K1JT
Subject: MAP65 Beta Testing
Date:July 5, 2007
MAP65 version 0.7, r474, is now available for download on
the WSJT Home Page,
http://physics.princeton.edu/pulsar/K1JT/ . The actual
installation file is
Hi Rick,
K9AO (Rick Kunath) wrote:
I am wondering why on the Linux machine you didn't just run the NTP
daemon? I've been using that method for years and it works extremely
well. Using the NTP daemon would allow for even better accuracy of the
clock on the Linux machine than just doing an
Hi Ermanno,
[EMAIL PROTECTED] wrote:
Hi Joe.
Thank you for the answers.
Also here uses a program for the control of the rotors
(as is small the world !!) taking the data from [azel.dat]
One of I these days will add the routine for set of
the frequency also.
Thank you
Ermanno / ik7ezn
Rick --
Thanks for the suggestions, they are much appreciated. I have been tied
up since yesterday afternoon, but hope to find time to try them out soon
... maybe even later today. I will report back here on any success or
failure.
-- 73, Joe, K1JT
Rick Kunath wrote:
Joe
Rick, and all --
OK, I've a chance to make some more tests.
My computer network looks like this:
ADSL 10 Mb/s -- Computer_A
DSL -- Modem -- Ethernet -- Computer_B
Hub|
-- Computer_C
Three computers are connected to a 10
Well, I found the following information about Ethernet switches:
Data received on any port of a repeating hub will be repeated on all of
its ports. Unicast, broadcast and multicast messages are all the same to
a repeating hub. With a switching hub or switch, unicast messages are
only sent to
Hi Dave,
Dave Blaschke wrote:
K1JT wrote:
In principle, any hardware that can be made to work with Linrad should
also be usable with the Linrad-MAP65 combination. At present this is
true only if the sampling rate can be set to 96.000 kHz (four
channels, two I-Q pairs) or 192.000 kHz (two
Rick and all,
Well, it seems I'm learning more about computer networking
than I ever wanted to know... ;-)
Why did you use a mask of 224.0.0.0 instead of 240.0.0.0 in your
multicast route statement on the Linux box?
(Your: # route add -net 224.0.0.0 netmask 224.0.0.0 dev eth1 statement.)
Hi Joe and all,
Sorry to be a bit slow in responding. I have been traveling
since last week, and it seems that you have largely answered
your own question.
The polarization-matching capabilities of the Linrad-MAP65
combination depend on having a two-channel receiver. Any
mixing in the Rx
Roger --
My guess is that you may simply need to change the call3.txt
file from DOS format to *nix format, i.e.,
C: dos2unix call3.txt
You can do the conversion in Linux, if your Windows
installation does not have the dos2unix utility.
This is only a guess ...
See you at MUD (Microwave
A paper on the MAP65 program has been placed on the
Documentation page of the WSJT web site. A direct link to
the paper is:
http://physics.princeton.edu/pulsar/K1JT/MAP65.pdf
-- 73, Joe, K1JT
#
This message is sent to you
Hi Alberto and all,
Alberto E. Zagni (I2KBD) wrote:
I have just a couple of questions about current MAP65 compiling status:
- Is MAP65 currently only working on Windows platform?
MAP65 runs under Windows and Linux. A packaged executable (version 0.8,
r502) is available on the WSJT Home
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