fldigi-4.2.06.16 development test version

#19426

开云体育

is posted at

This dmg is a signed and certified disk image.? It should install and then execute asking for microphone access a single time.

commit 19ba9e60dc5a57274ffc96b164156af22ebec283
Author: dave-w1hkj <w1hkj@...>
Date:?? Mon Dec 9 15:05:42 2024 -0600

??? MFSK afc
?? ?
????? * Increase AFC low pass filter range to 500.

commit 61f6518d29eea8f1a1dd4f7ca48eb438c0810384
Author: dave-w1hkj <w1hkj@...>
Date:?? Mon Dec 16 18:09:40 2024 -0600

??? THOR-25
?? ?
????? * add new THOR modem with following characteristics
??????? . symlen = 320
??????? . samplerate = 8000
??????? . flushlength = 20
??????? . bandwidth = 460
??????? . IEEE coefficients for viterbi encode/decode algorithms
????????? THOR_K15? 15
????????? K15_POLY1 044735
????????? K15_POLY2 063057
??????? . objective to provide highest baud within 500 Hertz bandwidth for
????????? European amateurs
????? * assigned secondary RsID code 691 to THOR-25
????? * increased flush length for all THOR baud rates
????? * added configurable start and end of signal shaping to these modem types:
??????? . dominoEX
??????? . psk
??????? . mfsk
??????? . rtty
??????? . thor
??????? . selectable on configuration tab Modem/General
????? * restored selectable paths to all THOR modem types

73, David
W1HKJ

When fldigi runs for a while weirdness in the WF happens.

#19425

开云体育

Dave,

Here is a curiosity question:

I am running the current alpha code (4.2.06.15) now, but have seen this multiple line blurring effect going back a ways in previous versions. If I run fldigi on this Win 11 or my old Win 10? i7 boxen for a while, The display goes like:
running for 34 hours

and the copy become erratic. If I close fldigi and immediately restart the display goes back to normal and copy is nominal:
normal display

This appears to happen in all digital modes I commonly use (most often Thor, Olivia, FSQ - but also others). It also impacts all visible signals on the waterfall together. I notice it on the 7300 because it is my primary "digital" radio, but also have seen it on the 705 and 7610. At first I thought it was a propagation artifact, until I restarted the program and immediately the blurring was gone. Restarting the program always clears things up.

Any clues what this might be? Something with the fourier algorithm associated with WF and decode? I am sure my cat did not walk on the keyboard... :)

Note, those two birdies seem to be generated away from the QTH - they are periodic and don't bother me when there. They were convenient to show what happens to all signals.
--
Jack Spitznagel
KD4IZ FM19oo
Pakton, MD

Re: AndFlmsg -- volume setting drops unexpectedly when starting to transmit

#19424

Hello Rob,

?

If it's like my Samsung phone, there is a setting called "Media Volume Limit" that automatically reduces the volume to protect hearing when using plugged headphones or Bluetooth.

?

I can set the max volume or turn it off.

?

I found it using a search on "volume" in the phone settings.

?

Hope that helps.

?

73, John

THOR 25 test results on HF SSB 80m

#19423

开云体育

???????????? THOR 25? TEST RESULTS

A test of the new mode? THOR25?? was achieved on the PANBEMS net (Sunday 0730 hr EST on 3583 kHz VFO)

The new alpha version of Fldigi:? 4.2.06.15?? did work with TxID/RxID? and? THOR25 codes.

Copy? with? THOR25? was excellent and prop on 80m at 0800 hr was very stable with strong signals from

PA/NJ/NY/? and? New England

Here is the AUDIO spectrum of ? THOR25? on? 3583 kHz (vfo)? caught on my HF SSB receiver and sound card? (Icom 7610)

THOR 25 AUDIO SPECTRUM

#19422

开云体育

THOR25 ? is a new (alpha) mode in FLDIGI ? THOR

I am using version:?? 4.2.06.15

Here is an?? AUDIO SPECTRUM? of THOR25? as I was sending a? FLMSG? on 80m NBEMS net.

Note the sharp sides down to a BW of about? 800 Hz? @ 30dB below the peak

Hope to try this new speed on the 80m and 40m? NBEMS? nets in the Pa region:

???? PaNBEMS:? Sunday? 0730 hr EST? on? 3583.0 kHz (vfo)

???? Mid-Atlantic NBEMS:? Sunday? 1000 hr EST? on? 7068.0 kHz (vfo)

de k3eui? Barry?? Philly

=============================

THOR25 AUDIO SPECTRUM Dec_14_2024.jpg

RF Spectrum of new alpha mode THOR25 with Fldigi

#19421

开云体育

?????????? THOR 25

Here is the?? RF Spectrum? of the new (alpha) mode? THOR25

sent on 441.525 simplex? FM?? with no PL tone

Rig: ? Icom 2820? (set to 1200 baud)? and? Masters Communications? DRA SR? sound card

Deviation set to about ? 2.2 kHz ? (since amplitude of pair of first sidebands = carrier amplitude)

Recorded on RSP duo hardware? and? RSP Spectrum Analyzer software

Let's test this new (alpha) mode soon on the HF SSB nets (Pa NBEMS and MidAtlantic NBEMS) and on local county FM?? 2m/70cm

?source: ????????? w1hkj.com/alpha

Dec 12? 2024

de k3eui

THOR 25 spectrum sent on UHF FM simplex.jpg

fldigi 4.2.06.15 developmen t version availabe for testing

#19420

开云体育

Posted at

Most recent three changes to the program:

commit ad817413f9d517a88b9156d48cc28f3a0b53c92c
Author: dave-w1hkj <w1hkj@...>
Date:?? Mon Dec 9 15:05:42 2024 -0600

??? MFSK afc
?? ?
????? * Increase AFC low pass filter range to 500.

commit 68e700918a9517b6825c94365037ae07fbb57fd3
Author: dave-w1hkj <w1hkj@...>
Date:?? Thu Dec 12 09:23:27 2024 -0600

??? THOR-25
?? ?
????? * add new THOR modem with following characteristics
??????? . symlen = 320
??????? . samplerate = 8000
??????? . flushlength = 20
??????? . bandwidth = 460
??????? . IEEE coefficients for viterbi encode/decode algorithms
????????? THOR_K15? 15
????????? K15_POLY1 044735
????????? K15_POLY2 063057
??????? . objective to provide highest baud within 500 Hertz bandwidth for
????????? European amateurs
????? * assigned secondary RsID code 691 to THOR-25
????? * increased flush length for all THOR baud rates
????? * added configurable start and end of signal shaping to these modem types:
??????? . dominoEX
??????? . psk
??????? . mfsk
??????? . rtty
??????? . thor
??????? . selectable on configuration tab Modem/General

commit 8aa6a3ea07596d0c61e57462c8ffe1bae939339b
Author: dave-w1hkj <w1hkj@...>
Date:?? Wed Nov 27 15:49:26 2024 -0600

??? MFSK afc
?? ?
????? * add configuration item allowing user to adjust the decay
??????? averaging of the AFC tracking.

73, David
W1HKJ

FLrig Remotely Accessed Scanning Script

#19419

I am trying to help out someone who is looking to use the JNOS bbs with
FLrig/FLdigi and have the HF radio scan groups of frequencies waiting
for connections. The group of frequencies will change based on time of
day for propagation changes. For example, 80 meters during evening or
overnight and 40 meters during daylight. The FLdigi would be the modem
and the FLrig would do all of the radio control functions. We can set up
scripting with JNOS and have it communicate with FLrig/FLdigi via TCP/IP.
Is this doable and where can I find the commands needed to make it happen
to build out the script? Thanks.

-- 
Charles J. Hargrove - N2NOV
NYC-ARECS/RACES Citywide Radio Officer/Skywarn Coord.

NYC-ARECS/RACES Nets 441.100/136.5 PL
ARnewsline Broadcast Mon. @ 8:00PM
NYC-ARECS Weekly Net Mon. @ 8:30PM


NY-NBEMS Net Saturdays @ 10AM & USeast-NBEMS Net Wednesdays @ 7PM
on 7.036 Mhz USB (alt 3.536)/1500 hz waterfall spot; MFSK-16 or 32

"Information is the oxygen of the modern age. It seeps through the walls topped
by barbed wire, it wafts across the electrified borders." - Ronald Reagan

"The more corrupt the state, the more it legislates." - Tacitus

"Molann an obair an fear" - Irish Saying
(The work praises the man.)

"No matter how big and powerful government gets, and the many services it
provides, it can never take the place of volunteers." - Ronald Reagan

Re: [winfldigi] fldigi 4.2.06.14 development test version posted at

#19418

开云体育

Tobias,

A quick response to your testing.

1. End of signal wave shaping will be a little more difficult, but I'll see what can be done.

2. Each change in signal encoding/decoding necessarily not be backward compatible.? The result of using different different Viterbi polynomials and interleave depth.? No free lunch however, since increased interleave depth and more complex Viterbi means more demands on CPU performance.

3. Slow versus Fast CPU.? For anything other than an old P3 I recomment using Fast CPU setting.? Slow CPU setting tries to compensate by reducing the number of simultaneous path evaluations.

4. SNR evaluation is heuristic and the algorithms always have "factors" in the equations.? I'll do some additional testing with pure AWGN created with linsim.? Linsim is a PathSim replacement available for Win, Linux, and MacOS.? See

comptext and comptty allow one to measure the CER and BER associated with ASCII text and RTTY text files respectively.

TITLE	AWGN	S/N	P1	SPREAD_1	OFFSET_1	P2	DELAY_2	SPREAD_2	OFFSET_2	P3	DELAY_3	SPREAD_3
AWGN S/N	1	10	0	0	0	0	0	0	0	0	0	0
CCIR 520-2 (Doppler Fading)	0	0	1	0.2	10	1	0.5	0.2	5	0	0	0
CCIR 520-2 (Flutter Fading)	0	0	1	10	0	1	0.5	10	0	0	0	0
CCIR 520-2 (Good Conditions)	0	0	1	0.1	0	1	0.5	0.1	0	0	0	0
CCIR-520-2 (Moderate Conditions)	0	0	1	0.5	0	1	1	0.5	0	0	0	0
CCIR-520-2 (Poor Conditions)	0	0	1	0.5	0	1	2	0.5	0	0	0	0
Direct Path	0	10	0	0	0	0	0	0	0	0	0	0
Frequency Shifter	0	0	1	0	500	0	0	0	0	0	0	0
High-Latitude Disturbed	0	0	1	30	0	1	7	30	0	0	0	0
High-Latitude Moderate	0	0	1	10	0	1	3	10	0	0	0	0
High-Latitude Quiet	0	0	1	0.5	0	1	1	0.5	0	0	0	0
Low-Latitude Disturbed	0	0	1	1
Low-Latitude Moderate	0	0	1	0.5	0	1	1	0.5	0	0	0	0
Low-Latitude Quiet	0	0	1	0.5	0	1	0.5	0.5	0	0	0	0
Mid-Latitude Disturbed	0	0	1	1	0	1	6	1	0	0	0	0
Mid-Latitude Disturbed NVIS	0	0	1	1	0	1	2	1	0	0	0	0
Mid-Latitude Moderate	0	0	1	0.5	0	1	0	0.5	0	0	0	0
Mid-Latitude Quiet	0	0	1	1		0				0

??

See attached files for jabberwocky.txt and jabberwocky_errors.txt

5.? AFC has no meaning for Thor.? I will disable the button.

6.? I will increase the AFC low pass filter coefficient to a maximum of 500.

Vielen Dank fürs Testen. Die Ergebnisse sind sehr gut.

73, David
W1HKJ

jabberwocky.txt

jabberwocky_errors.txt

[winfldigi] fldigi 4.2.06.14 development test version posted at

#19417

开云体育

FYI

-------- Forwarded Message --------

Subject:	Re: [winfldigi] fldigi 4.2.06.14 development test version posted at
Resent-Date:	Mon, 09 Dec 2024 11:29:23 -0800
Resent-From:	tsquare123@...
Date:	Mon, 9 Dec 2024 19:29:17 +0000 (UTC)
From:	T? via groups.io <tsquare123@...>
Reply-To:	[email protected]
To:	[email protected]

Hello David,

First of all many thanks for the updated FLdigi test version!

Here are the results and observations on THOR25 in brief. Please refer to the attached updated spreadsheet for details, if necessary.

1. Raised Cosine Signal Shaping: Excellent!

- Tested and confirmed OK: no more clicking when signing on using a Shape factor of e.g. 100 or more, while the setting '0' reproduces the previous state (non-shaped).

- Not sure whether the removed end of signal shaping might be an issue, since it clearly creates a 'click'.
=> This could be avoided, if the same (user-set) yet reverfsed raised cosine shaping was applied there, too.

2. New Thor-25 DigiMode Definition: Major Improvement!

- Compatibility with previous alpha test Thor-25 DigiMode Definition: NO (just for information).

- RSID (TX and RX incl. the new secondary RsID code 691): OK.

- Speed: similar to previous Thor-25 test version. OK.

- File Audio Playback (original FLdigi created THOR-25 stream): Text reproduced 100% OK (Columns H+I in the spreadsheet referred to below). OK.

- The signal decoding bandwidth ranges about +/- 250 Hz around the true center frequency (+/- 130 Hz with 'Slow CPU'). OK.

- Not shown in the spreadsheet: the SNR is stuck around +5 dB (3 dB with 'Slow CPU') when decoding the original (perfect) audio.
=> This is certainly not realistic and should be corrected before a final release.

3. PathSim Mid-Latitude Disturbed NVIS AWGN SNR 0dB resulting audio: RX text with 4 line errors (the previous test version had produced 10 errors)!

* See sheet 'PathSim NVIS THOR25A v4.2.06.14' see RUN #1 Columns B+C, RUN #2 Columns D+E, RUN #3 Columns F+G (Slow CPU). All previous sheets are unchanged:

- I also attach a gently filtered flac audio file (smaller size but keeping the entire relevant bandwidth unchanged) just for your information.

- Initially, for 38 consecutive lines or about 4 minutes, the decode was perfect!

- Thereafter, in a few lines, there were 1 or 2 decoding errors, leaving part of the text scrambled.
Note that if a linefeed was missing (error at the end of a line), I have corrected it manually to avoid auto-marking all lines below as errors.

- A repeat using the exact same audio a 2nd time has reproduced the same fair result, interspersed with the few errors described above. Repeatability OK!

- When checking [x] Slow CPU, the error rate increased to 14. Hopefully this might provide a hint as to where the remaining decoding issues may come from...?

* See sheet 'SNR PathSim NVIS THOR25 v.06.14':

- The FLdigi FEC log shows, that the signal is rated between error-free, yet still quite frequently at 50%, and once at 75% error, thus still a bit variable.

- The average SNR on this disturbed signal is rated at -2.3 dB (unchanged), and it varies quite a bit along the way, yet probably in phase with the simulation conds.

4. Questions:

- To find out about the remaining decoding issues, and possible further improvements:
=> Is there a way (e.g. using the existing log protocol - upon request?) to continuously track / log the current de-facto decoder frequency offset, SNR, and FEC?
=> In other words, could these values be added to the daily log file tags, e.g.
current definition: RX 1500 : THOR25 (2024-12-09 18:16Z): <...RX TEXT...>
extended definition: RX 1500 (1497): THOR25 -2.3 dB 75% (2024-12-09 18:16Z): <...RX TEXT...>
=> I thought about maybe 'seeing' whether the decoder does stay stuck on the 'correct' signal center frequency, or whether (and how) it starts sliding sideways?
=> Since decoding works so well over long stretches, maybe this might explain the short dropouts, and a slower 'AFC' in the THOR sense might stabilize the result...?

- The AFC Button is still active. Better deactivate it or does it have any function in THOR? I have not seen a difference when activated.

- On a related note, for MFSK AFC, if possible, I'd prefer allowing an even higher maximum low-pass filter setting, so far it's limited at 200 (quite helpful!).

Bottom line, this has been yet another amazing leap ahead in the new THOR-25 DigiMode definition!

Thank you, David!

73s Tobias

.-.-.

Am Montag, 9. Dezember 2024 um 15:37:32 MEZ hat Dave <w1hkj@...> Folgendes geschrieben:

Most recent change:

commit 0169172527f33938496aa6672adf7b0947922def
Author: dave-w1hkj <w1hkj@...>
Date:?? Sun Dec 8 17:20:08 2024 -0600

??? THOR25
?? ?
????? * add new thor modem with following characteristics
??????? . symlen = 320
??????? . samplerate = 8000
??????? . flushlength = 20
??????? . bandwidth = 460
??????? . IEEE coefficients for viterbi encode/decode algorithms
????????? THOR_K15? 15
????????? K15_POLY1 044735
????????? K15_POLY2 063057
????? * increased flush length for all baud rates
????? * added configurable start of signal shaping to these modem types:
??????? . psk
??????? . mfsk
??????? . rtty
??????? . thor
????? * removed end of signal shaping
????? * assigned secondary RsID code 691

Thor-25 signal showing RsID and 200 msec rise time at start of data stream.

73, David
W1HKJ

PathSim_Comparison_Mid-Latitude_Disturbed_NVIS_THOR25_vs_MFSK32_+_THOR32_2024-12-09.7z

thor25 is only available as alpha test mode

#19416

开云体育

http://w1hkj.com/alpha/fldigi/readme.txt

suggestion - let’s try thor25 for traffic over next few weeks

on PA NBEMS (3583 kHz at 0730 hr EST) and MidAtlantic nbems net (7068 kHz at 1000 hr est) on Sunday mornings

Barry

k3eui