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The Pa NBEMS net extensively tested (a few years ago) the OFDM modes on 80m Sunday mornings 0730 hr.

OFDM500 was very frustrating and not very robust unless we had a very strong S/N.

The 80m NVIS paths did something to mess up decoding.

We compared OFDM to the much slower MFSK32 and THOR22/44/56 ?modes for traffic (FLMSG) and finally gave up on OFDM. Then the OFDM modes were dropped from Fldigi.

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I don’t miss it on on HF SSB!

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However OFDM MODES did work extremely well on 2m/70cm FM.

But we found 8PSK500F and 8PSK1000F to be more robust.

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To what extent is OFDM like VARA?

Those of us who regularly use VARA HF and VARA FM are amazed at how well it copes with noise.

And… VARA can adapt to changing conditions and change speed with no user input.

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That’s like having a 20 speed bike on a mountain road compared to a single speed bike.

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I’m curious what other ARES/RACES groups are finding as the “best” (fast and robust) modes are on FM simplex and FM thru even an analog voice FM repeater? ?8PSK500F is my choice at this time.

MFSK128 for images.

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de k3eui barry

Philly

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Hello,

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My goal is to set up my FT-99!a to decode CW and send with a straight key.

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I am running FLDIGI ver. 4.2.05 with FLRIG 2.2.05. Rig control seems to be operating correctly.

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Right now, I can hear CW on the radio, but FLDIGI is not decoding anything.

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Is there anyone out there running a FT-991A with FLDIGI that can share the proper menu settings with me?

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Thanks!

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I am using Fldigi 4.2.06.

I have Rig Control set for "Use Hamlib".

For the Hamlib "Rig" setting I have "Icom IC-707 (Alpha)" selected.

Other then the Hamlib "Device" and "Baud rate" settings, all other Hamlib settings are set to default.

Screenshot of Hamlib settings attached.

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My issue is that I am unable to get fldigi to trigger the transceiver to actually transmit when transmitting in fldigi.

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Note that if I check the Hamlib "RTS/CTS flow control" setting then it DOES trigger the transceiver to actually transmit but is then stuck in transmit mode.

Is there a way to get the user interface to come up when the flrig comes up.

Just found how to do the auto start in fldigi.

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Dan

KG7AFL

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Excuse me if this is a duplicate post. I just downloaded FLDIGI last Sunday and have been trying to get it to work with my Yaesu FT-991A. After a lot of frustration, I've almost got it right. However, last night was the first time I was able to see properly decoded messages, but I was unable to transmit. After speaking to a fellow ham, he suggested I turn up the volume on my computer. This morning, I turned everything on, turned up my volume and I was able to transmit. BUT...now I can't get anything to decode at all. I am in BPSK31 mode. Something between shutting it down last night and turning it all on this morning a setting changed. Can anyone help me get this working? I am so close! Viki

Fernando,

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I am successful with getting fldigi to send to the log on Log4OM2. following the information from you.

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The function I am trying to replicate is the call lookup done at the beginning stage of a QSO.? Bothe DXLab & Aclog are able to make that look up.

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When I asked on the Log4OM forum, I received this response.....You must have missed the note in our instructions that says with Fldigi it's one way traffic, we can send to Fldigi not other way round.

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For those who have tried the OFDM modes, please note:

I agree Robert.? The?OFDM modes were introduced as experimental, and the original developer, John, KL4YFD, is not an active developer at this time.

I am trying to find out how to have a call sign entered in Fldigi get looked up in Log4OM2 so as to see if it was worked before.

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I have been unsuccessful in finding any information.

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When Fldigi is connected with the bridge to DX Labs, any call sign entered in Fldigi is immediately looked up in Pathfinder, DxView and Dx Keeper.

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When Fldigi is connected to N3FJP [ACLOG] any call sign entered in Fldigi is immediately looked up in ACLOG.

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Does anyone have any idea what that connection is?? I would like to replicate it in Log4OM2 so I can have the call information,

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Thank you in advance for any ideas.

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73

Bill

w1wrh

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There's definitely something not right with the way OFDM modes function in fldigi.? When I set fldigi to OFDM3500 centered at 1625 and send a message the station on the receiving end sees only gibberish text. This is using a 2 meter simplex freq. The sending and receiving stations can hear each others transmissions over the radio loud and clear.?

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When I try to change the center to 1375 the dashed lines in the waterfall do not move accordingly. And, the only way to change the center is to hover over the box and use the mouse wheel to change between 1375 and 1625. The arrows do not function.?

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When selecting Mode OFDM750F I get a non-stop run of text characters across the screen that do not stop unless I select a different mode (such as OFDM500F or OFDM3500).?

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Why is this and is there a way to make it stop?

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Thanks.

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-Randy, W4IFI

I have to echo the above suspicions about RFI. Program crashing plus the transceiver locked in transmit sounds very RFI-Like. In addition to the suggestions about grounding and using ferrites, I have had success in reducing RFI by reducing power output and physically spacing my computer farther away from the antenna & transceiver.?

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Even if distancing components farther apart doesn't work with your setup, it could be helpful temporarily for troubleshooting.?

Start looking for RFI. By some Toroids?and place them on everything. It was my cure to strange effects going on on my computer with certain programs.

73 Rick N2AMG

Good evening PD1ANB,


If you had a previous installation of a (somewhat) older FLdigi version, it might be a configuration incompatibility issue. Many new features have been added over the years and an old config file still present on your PC may not be functional any more.


You can do the following quite quickly to evaluate this problem using a 'fresh' independent installation from scratch:

Re-install the latest FLdigi version into a new folder that you call 'FL_APPS'. Exactly this name, including the underscore '_' (but not the apostrophes shown here).

Example: C:\DX\Test\FL_APPS


When launching FLdigi from within this fiolder, it will behave as if there was no previous installation and place all specific user files in a sub-folder below FL_APPS (this 'independence' may not be the case for macros, though).

You'll therefore have to set all relevant preferences again (especially regarding your soundcard and major rig communication definitions) to be able to try it out.

If this installation works correctly (which I'd assume it will) and the other one still doesn't, you'll probably have to find the old (now incompatible) config files, best via Menu - File - Folders - Fldigi Config... and remove them from there to let the latest FLdigi version set correct defaults again. It may be wise to move them to some backup location as a first step in case you need to look up certain previous settings later.


I attach a few hints on this and other topics posted earlier, hoping some of these may be of help.


Good luck and please let us know whether (and if so, how) you have made progress, once you're there...


73s SWL Tobias
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