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The Missing Link



I was pondering the "camps" in digital databfor EmComm such as packet, NBEMS and WL2K. Why not take the necessary pieces of the fast light suite and integrate them into an email-styled client that shows the messages in a logical format. RMS Express does this fairly well and AirMail does it a bit better but neither support the Linux community. So what I am proposing is something like this: 1. An email type interface 2. An inbox for newly received messages 3. An outbox for queued messages 4. User creatable folders 5. Typical Sent, Trash, etc. Folders 6. Radio--centric configuration for mode of operation, wrap, compress, etc. Obviously fldigi is the engine for comms and there is already so much in the way of port integration. So I suppose, in a sentence, "Why not create a messaging client to integrate the key components of the fast light suite for the benefit of EmComm users?" I understand that FLARQ has some folder monitoring capabilities, yet this is not standardized and would be difficult to train. Not having to teach users how to find files and how to decipher them on disk would be a real boon.

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Posted by: mitchwinkle-/E1597aS9LQAvxtiuMwx3w@public.gmane.org



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Thinking about high frequency accuracy and channel discipline with fldigi

Hello Linuxhams, this is Lee, AG6CB. I just finished field day where I
did 5 fldigi digital contacts. 

I came up with a whole bunch of speculative ideas for digital radio, but
I am going to write here with thoughts and questions about how to do
high frequency accuracy fldigi.

What I am thinking about is a way for PSK31 radios to do high accuracy
tuning and how to make a simple channel scheme to give every ham a clear
frequency if it exists.

Some of these Ideas have been worked out already. I welcome reference to
previous articles. Also, if you have got the WWV tuning feature working
well, tell me about how to do it.

	1. The first thought is, I wish I could work out a way to get the radio
I am using, the soundcard I am using and fldigi adjusted using WWV so I
could receive and transmit PSK31 signals with a numerically exact
frequency. It would be really nice when working on 20M to get a 14.070
Mhz PSK31 signal accurate to 1 Hz which is 71 parts per billion. I
understand PSK31 is 31Hz wide. For example, my radio is described as
having 10 PPM tuning accuracy. That is 14Hz on 20 meters.

	Because fldigi uses a soundcard with a 8-15khz bandwidth, I don't
expect that 71 ppb frequency accuracy will result in much better
filtering than is accomplished at present.

	2. One of the things we could do with a high level of accuracy is
experiment with channelization of the 6.2 khz bandwidth               of
a typical 20 meter 14.070 PSK usage.

	Suppose we think about setting up channels with all the channels spread
out across the entire 6.2 khz SSB bandwidth. We can use an alternating
binary division scheme to spread out all the signals so that as many
signals as possible miss the harmonics created by other signals. I
understand a square wave generates odd numbered harmonics, like 1, 3,5.
We would put signal 0 at -3.1khz, signal 1 at -3.1+(3.1/2), signal 2 at
-3.1-(3.1/2), signals 4,5,6 and 7 in between and so on. It is a fractal
process where the linear space is divided in 1/2, then 1/4, then 1/8
etc.

	A channel scheme would divide 6.2 khz into 64 pieces with 96 Hz between
each. The first 32 pieces would have 193 Hz each. 

	Channels could lead to a systematic way for looking for a clear
frequency. You take your radio Grid square modulus 64. The result of the
modulus calculation is between 0 and 63. Check that channel is it free?
If no, try the next channel. As you search for a quiet channel, you hop
evenly all around the PSK31 band.

	A channel scheme should also be studied by W1HKJ so it would fit well
with the existing fldigi signal decoding software. 

	One of the things I would like to explore as a follow-on to
channelization is whole band signal decoding and storage together with a
follow on system of recovering and continuing QSOs after a band dropout
has lapsed. 

	The discussion of frequency accuracy has another problem. I see some
PSK31 stations pull a few Hertz when the station begins transmitting. I
can usually deduce that it is the distant station, not my radio, when I
am listening or watching the waterfall. I have found it very difficult
to determine if my station pulls when transmitting. The best I can come
up with is ask another station to closely watch my signal.

	I bought a bunch of crystals and oscillators at an electronic surplus
store. The best I can say so far from my playing around is getting
better than 10 or 20 PPM accuracy or stability takes very careful
fiddling. The TXCO oscillators sold as an accessory for some ham radios
cost money because high accuracy and stability are not easy to achieve.

	Cordially yours, Lee AG6CB

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Posted by: Lee McKusick <lmckusic@...>
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HamQTH celebrates three years anniversary!

Hello,

today HamQTH.com celebrates three years anniversary. It was nice and
very important year. I'd like to thank you for your support. Without
it, it won't be possible to grow and have more and more users.

News:

   * added My spots to DX Cluster which shows only spots where you were spotted
   * dxcc statistic in log search tab now shows also numer of DXCC
worked on all bands
   * JSON DXCC search added (more in developers section)
   * HamQTH DXCC resolution API returned wrong details to requsted
callsign (only country name without any details) - fixed

HamQTH.com statistics:

    1,067,219 visitors
    12,087,291 page views
    22,621 registered users
    16,331,233 QSO in the log from 2,732 different callsigns
    20,723,429 queries to XML search

73, Petr, OK2CQR
HamQTH.com owner

--

-- 
http://HamQTH.com/ok2cqr
http://ok2cqr.com
http://cqrlog.com
http://cqrtest.com

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Posted by: Petr Hlozek <petr@...>
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Testers / programmers wanted

I have added a socket interface capability to flrig.  It allow flrig to 
be connected to a remote serial/socket server on a LAN or over a WAN.  
The serial->socket server may be a h/w device or socat running on a 
remote computer, http://freecode.com/projects/socat.  I have tested the 
design on my LAN with the socat server running on a Linux Mint-13 
system.  socat provides the interface to my FT-950. The client flrig can 
be co-located on the same machine, or reside on another machine.  It 
works fine on my test platforms, XP, Win-8.1, Linux and OS X.

Skip Teller, KH6TY, has been testing the socket client on Win7 <==> 
remote h/w serial/socket server with an internet connection.

The current implementation is very robust when the client is on a Linux 
or OS X platform.  It is fragile on Windows ... reconnects are not 
possible.  If the WAN goes down it is necessary to kill and restart 
flrig.  I am stuck and sure could use some help to discover how to fix 
the problem.

Write back if you are interested.  The easiest way for me to get code to 
you is via the Source Forge code repository for flrig, but I can post 
tarballs on the w1hkj.com web site.

Thanks,

73, Dave, W1HKJ

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Posted by: w1hkj <w1hkj@...>
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Keeping USB serial port names the easier way



This works in Xubuntu, or any flavor of Linux likely:

Open a termainal and type

cd /dev/serial/by-id <Enter>

Then do an

ls -l <Enter>

to see the links.

mitch <at> radio:/dev/serial/by-id$ ls -l
total 0
lrwxrwxrwx 1 root root 13 Jun 27 08:47 usb-FTDI_FT232R_USB_UART_A7035K2R-if00-port0 -> ../../ttyUSB0
lrwxrwxrwx 1 root root 13 Jun 27 08:47 usb-Prolific_Technology_Inc._USB-Serial_Controller-if00-port0 -> ../../ttyUSB1

My USB-->RS232 unit is the FTDI one in this example.

Use that VERY LONG name and create a symbolic link in a convenient place such as your home directory.

cd <Enter> gets you to your home directory.

mitch <at> radio:~$ ln -s /dev/serial/by-id/usb-FTDI_FT232R_USB_UART_A7035K 2R-if00-port0 tnc

You should see a link in your directory that looks something like this:

lrwxrwxrwx 1 mitch mitch      63 Jun 25 19:24 tnc -> /dev/serial//by-id/usb-FTDI_FT232R_USB_UART_A7035K2R-if00-port0


So the serial port name for programs would be:


/home/youruserid/tnc


in this example.


I have rebooted a few times and this seems to hold fine.  I don't know what happens if you MOVE the USB plug from one port to another, but there's little reason to do this anyway.

So skip all of the udev rules stuff and make it simple.  This symbolic link is the &qu ot;serial port" to use to configure your programs such as linbpq.  Same could be applied for CAT ports who use USB adapters for fldigi.  That way, rig control always works with no re-configuration.




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Posted by: mitchwinkle-/E1597aS9LQAvxtiuMwx3w@public.gmane.org



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screen sharing FLDIGI Shift Key problems.

FLDIGI screen share under osx Mavericks.

When I use screen sharing or VNC either one to share an OSX screen with FLDIGI running.
The "shift" key always brings up the "help" menus for FLDIGI.
This does not happen under FLRIG. or FLLOG
It makes it very difficult to type a message when help menu's keep popping up.
And Please don't tell me to check key mappings again....There are no mappings for the shift key on my system.

Steve

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Posted by: Steve <stecla1@...>
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Lubuntu ham software



I'm new to Linux and to this group so pardon the novice question. 
I just made an external boot disc and gave Lubuntu a whirl and the suggestion of many ham operators I've had email exchanges with. 

Question 1 - I'd now like  to install Lubuntu on an external drive to allow me to boot from that. Is that an option given during the install process from the DVD? I don't want to go too far as I don't yet want to install it on my internal laptop drive.

Question 2 - using Lubuntu I did a search for available ham radio software and didn't find much. FlDigi wasn't even on the list. I'm i looking in the wrong place?

Thanks for the support I get here.

73
Rick
W2JAZ


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Posted by: Richard Lawn <rjlawn-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>



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FLWRAP 1.3.4 not compressing and wrapping a DOC file



I have an EmComm exercise file which the agency supplied as a DOC file with embedded image (hurricane projection). 

I downloaded the DOC file to my Xubuntu machine and opened FLWRAP to compress and wrap for transmission.  The pfefferneusse.doc test works fine but this particular file does not.

Beside the embedded image there is also what appears to be a watermark image on each page ("EXERCISE"), so not sure if that makes a difference or not.

If a developer wishes to see the DOC file, I can send via direct email only.

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Posted by: mitchwinkle-/E1597aS9LQAvxtiuMwx3w@public.gmane.org



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Re: [Ham-Mac] Help getting fldigi to find the correct .xml file



Robert,

Your tip is one of the first things I had him try. He can make changes (Configure/Save Config) from fldigi and the files show up as modified in the Finder’s panel. When he quits and restarts fldigi, the changes do not show up. The problem is his fldigi is not loading the files from his .fldigi folder.  

As an example, he can make a change to a macro and use the File/Macros/Save to save the changes to the macros.mdf file. The Date Modified in the Finder updates. When he restarts fldigi, the changes to the macros.mdf file do not show up.  

There is something really wrong with his files and I have suggested he Trash everything associated with fldigi and start over as a new user. 

N5XRD is frustrated and tired of messing with it.

73 Dick AA5VU


On Jun 25, 2014, at 2:43 AM, linuxham-hHKSG33TihhbjbujkaE4pw@public.gmane.org wrote:

Tue Jun 24, 2014 10:44 am (PDT) . Posted by:

"Robert Stiles" kk5vd

From FLDIgi mouse click File (menu) -> Folder (submenu) -> Fldigi config

This brings up the files in the configure folder.

If you insist on modifying the files directly. Using a true text editor will be required, TextWranger (MacOSX) is a good choice and it's free. It can be easily found using one of the search engines on the internet or the Apple AppStore.

Robert



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Posted by: Richard Kriss <aa5vu-fOdFMYwuEsI@public.gmane.org>



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Re: [Ham-Mac] Help getting fldigi to find the correct .xml file



try the following from the OS X terminal app

sudo find / -name ".fldigi"

my guess is that there is a hidden version in  / or /etc

 
 
On 06/24/14, Dick Kriss<aa5vu-fOdFMYwuEsI@public.gmane.org> wrote:
 
I have been unsuccessfully trying to help N5XRD by email and phone with his OS X/fldigi setup and something really strange is going on. No joy on my help.

N5XRD�s fldigi-3.21.81 (not the latest) is in his Applications folder and he has a .fldigi folder with all the goodies in his USER folder. He can write changes to his fldigi_def.xml and macro files okay; however, when he restarts fldigi, he has no rig control and the old macros are displayed. When he writes a change, the file date modified shows in his .fldigi folder.

I had him trash the fldigi_def.xml file and start over as a new user. All went well until he did a restart and fldigi booted to his old setup using his K3 macros. He is now using a Kenwood TS-590S. When N5XRD restarts his fldigi, the rig frequency box says �Enter Xcvr Freq� rather than �Rig CAT - TS-590S� and his old K3 macros are loaded.

I suspect there may be an hidden (invisible) old .fldigi folder somewhere on his hard drive and I do not know how to tell him to find and remove it. I don�t think he has a utility to let him view invisible files.

Any suggestions will be appreciated but be sure you copy N5XRD (see cc to this posting)

I have seen this problem one time on my setup and it was easily fixed by restarting the iMac. He has tried a restart and it did not work.

Dick AA5VU
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Posted by: avflinsch-H+0wwilmMs3R7s880joybQ@public.gmane.org



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Help getting fldigi to find the correct .xml file

I have been unsuccessfully trying to help N5XRD by email and phone with his OS X/fldigi setup and something
really strange is going on.  No joy on my help.

N5XRD’s fldigi-3.21.81 (not the latest) is in his Applications folder and he has a .fldigi folder with
all the goodies in his USER folder.  He can write changes to his fldigi_def.xml and macro files okay;
however, when he restarts fldigi, he has no rig control and the old macros are displayed.  When he writes a
change, the file date modified shows in his .fldigi folder.

I had him trash the fldigi_def.xml file and start over as a new user.  All went well until he did a restart and
fldigi booted to his old setup using his K3 macros.  He is now using a Kenwood TS-590S. When N5XRD restarts
his fldigi, the rig frequency box says “Enter Xcvr Freq” rather than “Rig CAT - TS-590S”  and his
old K3 macros are loaded.

I suspect there may be an hidden (invisible) old .fldigi folder somewhere on his hard drive and I do not know
how to tell him to find and remove it.  I don’t think he has a utility to let him view invisible files.

Any suggestions will be appreciated but be sure you copy N5XRD (see cc to this posting)

I have seen this problem one time on my setup and it was easily fixed by restarting the iMac. He has tried a
restart and it did not work. 

Dick AA5VU

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Gmane