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Can one run two instances of FLDIGI at the same time?
14
1) How does one share the sound devices? 2) How does one avoid collisions over rig control ports? 3) how does one ensure separate fldigi.files space? Thanks in advance! -- 73, AB1PH Don Rolph
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FLDIGI hang bookworm
#fldigi
#raspberrypi
Running bookworm. FLDIGI has been running for several hours. I open a VNC window and see the FLMSG window. It is stopped because there was a checksum error. I accept the error, read the message in the FLMSG window, save the message, close the FLMSG window then attempt to look at all of the text in the upper window - the one where all of the text displays. Digi is hung. The slider doesn't slide. I switch desktops and open task manager and a terminal window - flrig looks good, digi is using 108% CPU, top says that digi is runnable. I close task manager and now I cannot switch back to the digi desktop. I can click the desktop but nothing happens. I will probably have to reboot to get control back. Is there anything I can do before I reboot to collect information? -- richard kd8noa
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Pre-processing data (methods) to minimise file size sent over a radio link.
I had originally thought to make this a wiki entry, but this and other ideas are probably worth discussing. It may be of use to the NBEMS groups. Note these methods generally are not worth it if the TX payload size is (say) <500 bytes/characters. I have been experimenting with sending larger files over HF (like 150kbytes max) and thought I may share some of the pre-processing ideas I have worked though. I have been more or less using flamp/fldigi with PSK250RC7 (and slower) as well as HamDRM EasyDRF E/B/A 4/16/256 and recording/playback via a remote SDR. These tests ranged from 40-15m on 300-4000km paths. I never seem to be able to arrange ARQ and BSR sessions with other amateurs! There are two basic kinds of transfers, lossy and not. Lossy in a sense also includes the picture modes of Thor, IFKP, FSQ and MFSK etc. I could argue too that a jpg file is also lossy, but for this exercise I am talking about whatever file data I send is faithfully received at the RX end. It is worth pointing out that DSSTV programs like EasyPAL and QSSTV by default actually re-encode pictures to a lesser quality (as JP2's), so the result is not as good as the original. So onto some real world uses. - JPG's are an obvious for a scene/event photo, but terrible for a scanned pieces of paper. They generally tend to be a bit large for HF so any method to reduce size without drastically reducing their usefulness is worth a thought. I am sure the quality and resolution side (and cropping) is well understood, so in addition; - Dropping from 24bit colour to 8bit monochrome reduces by about 15-25% - Changing DCT sub-sampling from 4:4:4 to 4:2:0 reduces by about 15% - The EXIF tags and image thumbnail can add 20-25kbytes to the file, so worthwhile removing unless needed. - PNG as a drop-in for 24bit/colour JPG's (conversion) doesn't help at all as it is lossless. As a 1 (b/w) or 16 colour though they are worth trying. It is worthwhile ensuring that the image to process contains solid areas of 1 colour though. Dithering makes them huge. Think cartoons or limited colour logos. - G4 TIF is about the best compressed bitmap B&W standard there is. This was the original format used in the Windows Faxviewer, so seems well supported. - Using a cell phone to take a photo of a black/written/drawn page of paper works well. There probably isn't any need to go larger than the resolution of a "fine mode fax". A 1500x2000 JPG half page of text that has been threshold detected and converted to PNG is about 39kBytes, but as a G4 tiff that comes down to maybe 26kBytes. A simple map drawn on paper with a thick pen will be much smaller. - Vector graphic standards romp all over bitmap for filesize. These include PDF, EPS and SVG. Be wary though about just converting an existing bitmap. By default postscript and PDF will save that as a bitmap area and will therefore be huge. As a guide, extracting just the PA-B circuit diagram page from my Icom 9100 PDF manual is about 123kBytes. - There are tools that convert raster to vector, Potrace comes to mind, but there are others. You might photograph a hand drawn (with ruler) map or diagram, convert it to B&W (BMP, PBM etc) then use potrace to create SVG, PDF, EPS etc. The straighter the lines on the paper are the smaller the filesize will be. - Simplifying GPX tracks. You may like to walk around with your GPS equipped phone and log your track. Simplifying is worthwhile as it removes points in the middle of straight lines. It is also possible to use the standard phone camera and snap images with location enabled. These images can be used to create a GPS track and is also possible to overlay the images on a map. Google Earth allows this as does Viking. In an EMS situation, walking around photographing geolocated damage might be helpful, but only relevant to radio xfers if the cell phone system was down! Software tools - Linux & Windows (EasyDRF runs under wine). Note the code examples are in Linux format. - Personally I use Gimp (GUI) for many bitmap functions, for one offs. - Viking (GUI) for displaying geotagged images and some GPX
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FLDIG Question
3
Is there anyway to capture the S/N of a station when they check into a net? I use FLnet to log stations. I could also record them in a log for FLdigi. The current macro I am using is: <CALL> <INFO1> Then I have to cut and paste into notepad or something like that. Thank you, -- Bruce WA1YZN
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flamp 2.2.13 release posted at
3
http://www.w1hkj.com/files/flamp/ Amp-2.V3.0.Protocol.pdf Amp-2.V3.0.Specification.html flamp-2.2.13.tar.gz flamp-2.2.13_LI.dmg flamp-2.2.13_VN.dmg flamp-2.2.13_setup.exe flamp.txt flamp_help.pdf flamp_help.zip readme.txt and at Source Forge, https://sourceforge.net/projects/fldigi/files/flamp/ Refer to readme.txt for list of changes. 73, David, W1HKJ Robert, KK5VD
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ARL Messages update in FLMsg
I handled a radiogram containing an ARL SEVENTY component and found that the ARL messages in FLDigi didn't go that high. Did some searching and found that NTS 2.0 defines a number of additional messages. They are listed here: https://nts2.arrl.org/numbered-texts/ -- 73, Neil W?NRP
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Here is the PPT attached that I have prepared to go over on the next few months of Zoom Class: Sound Card Digital Modes for Rookies I will go over the first 30 slides on April 6 - general CONFIG settings for Fldigi and CAT control: Flrig/RigCat/Hamlib/Hardware PTT Then in May and June we will look at FLMSG (sending emergency messages that are already formatted) and finally FLAMP In the fall we will change topics to WINLINK (HF SSB and VHF FM) and the VARA modems Feel free to share the PPT on Fldigi 73 de k3eui Barry On 3/30/2024 10:27 AM, Barry Feierman wrote: Reminder The 3rd Zoom Class - ¡°Sound Card Digital Modes for Rookies¡± will be held Saturday April 06 at 10 AM EDT on my Zoom Link: Join our Cloud HD Video Meeting us02web.zoom.us We will use a 40m frequency (if it is available) for testing and demos: 7068 kHz (vfo, usb) @1500 Hz with Thor 22 mode) The topic for this class is ¡°Rig Control and PTT¡± (with Fldigi and FLRIG software). (we are not yet coverning Winlink modes nor FT8 - that comes later in the year). Here is my FLRIG config for an Icom 7610 The typical baud is 19,200 or even 9600 baud, but I picked 115k to see if it would work (it did). Not all radios will show all of these options Read the FLRIG help guides first! When you press the INIT button, the diamond should light up showing "connected". It that does not happen, check COM port numbers (Windows might renumber these after an update). Some rigs make PTT simple - just do it over a CAT port. But not all HF SSB rigs have a PTT "command" on a CAT port. READ YOUR MANUAL. Some rigs have a secondary COM (dumb) port and can do a PTT or SEND via the RTS pin. The RTS pin goes "high" (+ voltage) and a relay or transistor switch grounds a PTT pin on a data port (you hope). Some sound cards (SignaLink) simply use an internal VOX circuit in the SignaLink, not the VOX on the radio itself (use for PHONE VOX). And the DRA (Masters Communications) sound cards use the RA (adapter) option for a PTT (send) and not a COM port. Yes, I agree - the PTT options can be confusing. Do NOT choose two options for a PTT - redundancy is not good. I would like to talk about the pros and cons of Rig Control in general (based on my experience0 For some ops, "rig control" is essential (radio has small dial touch screen). And some ops like to operate their rig from a remote location over the internet (later topic). I have an Icom 7610 and an Icom 705 with touch screens. If I use FLRIG to do the rig control (CAT) it is easy once I identify the COM port (baud, stop bits, etc.) Every option is controlled with my mouse. But this is frosting on the digi mode cake. I am hoping that there are folks on the ZOOM class (10AM to 11AM) who can guide rookies who have specific rigs: Icom 7300, Yaesu FTXXX, Kenwood 590,890 For some older rigs (FT847 or Icom 706 or Knwd 440) or less popular rigs, we may not have a local expert on Zoom. Please let me know if you are available to join the ZOOM class on Saturday April 06 from 10 AM to 11 AM. Remember we are encouraging ROOKIES to take part, so keep the explanations for PTT and CAT on YOUR rig simple. We are holding this to a one-hour limit via Zoom, but I can stay a while longer listening on 7068 kHz. TU 73, Barry2 k3eui West Chester PA March 29 2024
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flrig 2.0.05.66 development test version posted
at http://www.w1hkj.com/alpha/flrig/ darkscheme.UI.prefs flrig-2.0.05.66.tar.gz flrig-2.0.05.66_LI.dmg flrig-2.0.05.66_VN.dmg flrig-2.0.05.66_setup.exe flrig.png flrig_help.pdf readme.dmg.txt readme.txt See readme.txt for list of changes. For the US members, have a safe and happy 4th of July. 73, David W1HKJ
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flrig 2.0.05.64 development version posted
2
at http://www.w1hkj.com/alpha/flrig/ Index of /alpha/flrig Parent Directory darkscheme.UI.prefs flrig-2.0.05.64.tar.gz flrig-2.0.05.64_LI.dmg flrig-2.0.05.64_VN.dmg flrig-2.0.05.64_setup.exe flrig.png flrig_help.pdf readme.dmg.txt readme.txt see readme.txt for complete list of changes. 73, David, W1HKJ
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Kenwood TM-V71 and FLDIGI CAT/PTT Setup
2
#config
#fldigi
Hello. Can anyone please advise how to set up in FLDIGI CAT/PTT for the Kenwood TM-V71, SignaLink USB and WIN11? I am not sure which of the six FLDIGI Config-Rig Control options to use and what the settings would be. I use Hamlib on HF with my IC-7300 but it isn't working with the TM-V71. I primarily use the TM-V71 and SignaLink for Winlink VHF Packet. Thanks, Dave/N3CKI
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Here is my "noise level" revealed by the RSP play SDR (hardware) and RSP spectrum analyzer (software) The vertical scale is in dB (from -100 to -30 dB). I can't remember where the S-units correspond. Antenna is a 50 ft horizontal "rain gutter" with a 9:1 UNUN and 30 ft RG8X coax. I tracked the RF on my "gutter antenna" from 0.1 MHz to 100 MHz (where I see the FM commercial broadcasts above 88 MHz) I think the peak around 27 MHz is a CB truck on Rt. 1 nearby. Most of the "noise" fundamentals are below 2 MHz, but have harmonics way up to 30 MHz. Then there are some "spikes" which have no identity (yet). Not in the ham bands. I can't hear any of the 80m NBEMS weekend nets around the mid-atlantic region. de k3eui June 12 2024 top horizontal scale shows FREQUENCY every 10 MHz from 0 to 100 MHz
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AndFlmsg: printing forms
5
John, Might you have suggestions on how to print forms from AndFlmsg? The printing app on my phone does not seem to recognize the files I can export using the AndFlmsg "share" button. Thanks for all you do! 73 de . . . Rob K6RJF
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Two fast modes via one shortwave broadcast carrier
Here is an excellent demonstration of the ability to send text via an unmodified analog shortwave broadcast transmitter. PSKR125C10 (1100 wpm) is centered on 2250 Hz, while simultaneous MFSK64 (240 wpm) is centered on 560 Hz. WRMI Florida to an SDR in Ontario. You can decode using this audio. Your receiver and Fldigi will need to accommodate the 50 to 3100 Hz bandwidth. https://x.com/fifou93971/status/1797524842687905927 Kim KD9XB Shortwave Radiogram
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flrig 2.0.05.63 posted at
http://www.w1hkj.com/alpha/flrig/ Index of /alpha/flrig Parent Directory darkscheme.UI.prefs flrig-2.0.05.63.tar.gz flrig-2.0.05.63_LI.dmg flrig-2.0.05.63_VN.dmg flrig-2.0.05.63_setup.exe flrig.png flrig_help.pdf readme.dmg.txt readme.txt 73, David W1HKJ
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flamp 2.2.12.04 development release at
http://www.w1hkj.com/alpha/flamp/ Index of /alpha/flamp Parent Directory flamp-2.2.12.04.tar.gz flamp-2.2.12.04_LI.dmg flamp-2.2.12.04_VN.dmg flamp-2.2.12.04_setup.exe flamp_help.pdf readme.dmg.txt readme.txt 73, David, W1HKJ
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HF Antennas at K3EUI Now at new QTH (Crosslands Retirement Community) in Kennett Square - about 8 miles SW of West Chester and west of Philly. Elevation 380 ft and room for a long wire into the woods, but not set up yet. Trying small and hidden HF antennas in my "garden" area (perimeter of first floor apartment). After finding my first (horizontal) 10 ft high, 50 ft long rain gutter was only useful on 80/40m I ran some coax to a second rain gutter. This one (aluminum) is like the "INVERTED L" style, about 25 ft high, makes a horizontal turn, and 25 ft horizontal run, so overall about 50 ft. Fed at the base of the vertical drop via a Palomar Engineering 9:1 UNUN and 50 ft RG8X with a choke at the entrance to the shack. So I allow the coax "shield" to be the counterpoise, but with RF choke, no RFI inside shack (so far). Later I will add one 50 ft radial and recheck the SWR. This one tunes up very easily on 20m and 10m and might be a good 20/10m DX daytime antenna. I was copying all sorts of 20m digi signals (including WWV at 15 MHz) with an S6 noise level. Not so great on daytime 80m/40m NBEMS paths. Verticals tend to pick up RFI from motors, LED's etc. VHF /UHF pretty decent to local county repeaters with verticals ground-mounted. VARA FM working well on 145.670 MHz. de k3eui barry June 02
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My first attempt at a "rain gutter" antenna was a 50 ft long, 10 ft high alum rain gutter. It runs along a covered sidewalk between two buildings. It was fed via a 9:1 UNUN with 20 ft RG8X and a RFI choke, and had an SWR below 3:1 across 80m and 40m. Tuned up easily on the 80m NBEMS nets today and on the 40m MidAtlantic net - so OK on xmit. However my noise level was S9 plus on 80m/40m. so Ron coached me on how to use k3fef remote receiver (worked well). Bummer on my local noise. I next tried a different 50 ft long vertical rain gutter - fed at base (bottom) with another 9:1 UNUN. It goes up about 25 ft, then horizontal for another 25 ft. So it is more like an "inverted L" antenna, fed at the base. tuned up easily on 40m, 20m and 17 meters with a 2:1 or lower SWR (lucky?) God Bless RAIN GUTTERS made of conductors like aluminum. I put this antenna on 14.074 MHz (FT8) and stations all over the USA heard my 10W FT8 CQ. Noise level is an acceptable S6 or so right now on 14.074 at 12:30 PM. It won't be ideal for 40m NBEMS daytime nets with vertical (mostly) polarization and low-angle take-off. I need to work out a better 80m/40m NBEMS horizontal antenna for high-angle signals and then figure out a way to get rid of the background (local man-made) noise. May try running a "long wire" into the woods (have to hide the coax underground). I have coax into the attic - but no antenna up there yet. Residents are not allowed to get "into" the attics - so I need one of the maintenance guys help. So far, this transition to a Retirement Community has gone well. The views are fantastic (big woods, a local fox, giant ground hog and thousands of birds) and I can't complain about the food. de barry k3eui
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fldigi 4.2.05.24 development version posted at
http://www.w1hkj.com/alpha/fldigi/ Index of /alpha/fldigi Parent Directory fldigi-4.2.05.24.tar.gz fldigi-4.2.05.24_LI.dmg fldigi-4.2.05.24_VN.dmg fldigi-4.2.05.24_setup.exe fldigi-dark-scheme.png readme.dmg.txt readme.txt Author: dave-w1hkj <w1hkj@...> Date: Wed May 29 13:48:38 2024 -0500 Micro modems * change name to avoid double word parsing issues with frequencies2.txt Author: dave-w1hkj <w1hkj@...> Date: Tue May 28 00:33:23 2024 -0500 colors and scheme * allow user to select default background and foreground colors . supplements command line usage ... see readme.txt for complete list of commits. 73, David, W1HKJ
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flrig 2.0.05.61 development release posted at
http://www.w1hkj.com/alpha/flrig/ Index of /alpha/flrig Parent Directory darkscheme.UI.prefs flrig-2.0.05.61.tar.gz flrig-2.0.05.61_LI.dmg flrig-2.0.05.61_VN.dmg flrig-2.0.05.61_setup.exe flrig.png flrig_help.pdf readme.dmg.txt readme.txt See readme.txt for complete of changes since last maintenance release 2.0.05. 73, David, W1HKJ
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at http://www.w1hkj.com/alpha/fldigi Index of /alpha/fldigi Parent Directory fldigi-4.2.05.22.tar.gz fldigi-4.2.05.22_LI.dmg fldigi-4.2.05.22_VN.dmg fldigi-4.2.05.22_setup.exe fldigi-dark-scheme.png readme.dmg.txt readme.txt If you tested .21 and had very bad color rendition, please try the following before running .22 locate the file fldigi_def.xml on windows in the folder: fldigi.files on Linux/MacOS in the folder: $HOME/.fldigi open the file using a text editor locate and delete these lines: <!-- type: int; default: -1195853824 background color --> <BACKGROUND>-1195853824</BACKGROUND> <!-- type: int; default: -875174400 background2 color --> <BACKGROUND2>-875174400</BACKGROUND2> <!-- type: int; default: 269488128 foreground color --> <FOREGROUND>269488128</FOREGROUND> the actual values may not be the same on your system. save the file start .22 the colors should be close to the original default colors open the configuration dialog to adjust the Background, Background2, and Foreground colors to suit save the configuration 73, David, W1HKJ
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Image Name
Sat 8:39am
Sat 8:39am