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Author Topic: Fldigi PSK31 text garbled (using Icom 7300)  (Read 8558 times)
WB6DNL
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Posts: 65




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« on: July 08, 2017, 12:46:20 PM »

I’m trying to get into PSK31, and am using Fldigi and an Icom 7300.

I’ve installed the current version of Fldigi, and configured it per instructions on a video by Rick Frost, K4REF, with one exception: I was unable to locate the “flamp” file to insert into the field found in Configure>AutoStart>”flamp field’ (the 2nd field in the list). 

I also followed setup instruction found on the web for using Fldigi with an IC 7300.

The good news is that text is showing up in the receive window, and there’s indication I’m receiving stations out there.  The bad news is that the text is garbled (unreadable).

What are some things I might try to clear up the receive text?

(Also, I’m new to eHam. Please let me know if I should have posted this to the Elmer Forum rather than this one.)

Thanks,
Dave (WB6DNL)
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WA9AFM
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Posts: 331




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« Reply #1 on: July 08, 2017, 01:53:56 PM »

You didn't mention what band you were on, but for PSK, the protocol is to use USB regardless of frequency.
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K0UA
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Posts: 4610




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« Reply #2 on: July 08, 2017, 04:31:11 PM »

You will want to be in USB-D mode  So that is Upper Side Band Data mode.  The reason for this is so that you want the microphone to be muted when you transmit. 

I assume you are using the simple USB (as in Universal Serial Bus) cable to interface the radio to your pc.

I hate the fact that USB has two meanings now.

Check on how much audio you are feeding the computer.  Too much could cause distortion.  My audio from the radio to the computer is set at 10%
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73  James K0UA
ARRL Missouri Technical Specialist
K0UA
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Posts: 4610




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« Reply #3 on: July 08, 2017, 04:33:37 PM »

Next question is how well does it work with WSJT-x or other soundcard programs? 

Make sure you have the correct soundcard selected in your soundcard setup.   Fldigi was always the hardest for me to get set up and working.  with WSJT-x being the easiest.
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73  James K0UA
ARRL Missouri Technical Specialist
WB6DNL
Member

Posts: 65




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« Reply #4 on: July 08, 2017, 08:25:23 PM »

Thanks for the responses to my query.

I was on 20-meters (14.070 MHz).  My IC7300 was in USB-D mode and connected to the computer (running Windows 10) with a USB cable.  My USB MOD Level was set at 25% (50% is the default setting). 

K0UA - You said said your audio was set at 10%.  Are you using an IC7300? 

My understanding is that WSJT-X does not include PSK31.  This leads to maybe a more basic question, though:  If I want to try my hand at HF digital, is PSK31 the place to start and, if so, is there some software I should use that’s better (easier) than Fldigi? Having spent some amount of time and effort installing, configuring, and studying the operation of Fldigi, I feel a bit committed to it and would hate to start over with some other software.

Dave (WB6DNL)
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K0UA
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Posts: 4610




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« Reply #5 on: July 09, 2017, 05:01:03 AM »

Thanks for the responses to my query.

I was on 20-meters (14.070 MHz).  My IC7300 was in USB-D mode and connected to the computer (running Windows 10) with a USB cable.  My USB MOD Level was set at 25% (50% is the default setting). 

K0UA - You said said your audio was set at 10%.  Are you using an IC7300? 

My understanding is that WSJT-X does not include PSK31.  This leads to maybe a more basic question, though:  If I want to try my hand at HF digital, is PSK31 the place to start and, if so, is there some software I should use that’s better (easier) than Fldigi? Having spent some amount of time and effort installing, configuring, and studying the operation of Fldigi, I feel a bit committed to it and would hate to start over with some other software.

Dave (WB6DNL)

Yes, I am using a ic7300 with wsjt-x for all of the JT modes and MSK144,  Ham radio deluxe/DM780, but I also use FL digi on occasion.  I just found FLdigi hard to interface and make work with the various rigs I have tried it on.  It has more control over settings used to interface and hence much more complexity.  No, WSJT-x does not have psk31 but my suggestion to use it to check your installation and setup because it is so easy to set up and get working.
By the way there are a heck of a lot more people on JT65 than there is on PSK and all the other modes put together.

Now don't get me wrong, JT65 is NOT a conversation keyboard chat mode. You don't "talk" to anyone normally.  You just make contact, exchange grid squares and signal report. say 73 (optional) and you are done.  They are in the log, you upload that and on you go. If you want to work "shiploads" of DX, complete that WAS award or things like that, then this is your mode.  NO TALKING allowed. Smiley   

PSK31 is a bit better in that some of the guys will actually "chat" with you.  A lot won't, they will just shove a macro towards you with all of their useless information, but at least the ability to keyboard to keyboard chat is there, and a lot of the guys will talk with you.  Keep in mind a lot of folks can't type.  Many guys typing speed is about 2 or 3 words a minute. So you can't expect much from them.  They are going to shove a macro at you, and say 73 and thanks for PSK31 QSO number 20,323 and SK.

Modes like Olivia, are nearly all keyboard chat QSO, but some of the Olivia modes are so slow they kinda bore me, as I can type 60 wpm pretty easily.  BUT all those guys that cant type are really loving it, because they can keep up with the slower versions of Olivia.

It is all good, find the niche you like the best.  JT65 is so simple to get going and easy to operate.  PSK31 with whatever program you want to use is not too difficult to use, but is entirely different.

Here is my opinion of the number of people on each mode:  Take all of the other keyboard chat modes and put them together, and they would not add up to the number of people on PSK31.  Then take all of the PSK31 users and all the other keyboard chat users (Olivia, etc.) and the would in no way add up to the number of people on JT65.
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73  James K0UA
ARRL Missouri Technical Specialist
VA7CPC
Member

Posts: 2831




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« Reply #6 on: July 09, 2017, 12:38:47 PM »

Fldigi is quite flexible -- lots of modes are supported, and it has "rig control" capabilities.

But the setup for each "modem" -- I don't think that's harder than it would be in any other program.

The "old reliable" PSK31 program is Digipan -- but it hasn't been updated for a long time.  You might download a  copy of Digipan 2.0, and see if it runs OK on your computer.

Assuming you have a waterfall with PSK31 signals (they look like railroad tracks, with frequent crossovers), and you click on one of those, and the "AFC" button is pressed in fldigi, you should get decoded text pretty quickly.

An experienced ham, in your shack, may be able to find whatever is wrong much faster than we can.  Contact a local club, and see if someone can help.

.       Charles
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WB6DNL
Member

Posts: 65




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« Reply #7 on: July 09, 2017, 02:25:59 PM »

I spent some time with Fldigi this morning and still couldn't get it to decode text. I'm going to set it aside for a bit, and see if someone in our radio club operates HF digital (most seem to be VHF packet folks) and can give me a hand.  Thanks again.

Dave
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ND6M
Member

Posts: 825




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« Reply #8 on: July 09, 2017, 03:14:40 PM »

...
The good news is that text is showing up in the receive window, and there’s indication I’m receiving stations out there.  The bad news is that the text is garbled (unreadable).

What are some things I might try to clear up the receive text?...

It may sound counter intuitive, but, try turning the RX input down.

its real easy to overdrive the soundcard input.

the flamps file is here      http://sourceforge.net/projects/fldigi/files/flamp/
« Last Edit: July 09, 2017, 03:17:10 PM by ND6M » Logged
K0UA
Member

Posts: 4610




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« Reply #9 on: July 09, 2017, 03:42:38 PM »

If you want to load teamviewer 12 and so using, let me poke around in your pc while we talk over the phone I can do that this afternoon if you are a trusting person.  I know you don't know me, but if you want to take a risk, I will help you.  Or we can just talk on the phone.  If you are interested in trying to compare settings.  I have a background in doing remote assistance to technicians.  I did it for years when I used to work for Windstream Communications.

James K0UA      k0ua(at)  ya, you know who dot com   Send me an email and I will send my phone number or give me yours and I will call you...
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73  James K0UA
ARRL Missouri Technical Specialist
WB6DNL
Member

Posts: 65




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« Reply #10 on: July 09, 2017, 04:10:07 PM »

James - Actually, can't figure out your email address. Tried gmail and arrl

Dave
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K0UA
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Posts: 4610




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« Reply #11 on: July 09, 2017, 04:13:33 PM »

yahoo
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73  James K0UA
ARRL Missouri Technical Specialist
WB6DNL
Member

Posts: 65




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« Reply #12 on: July 09, 2017, 07:34:15 PM »

Many thanks to Jim, K0UA, who spent considerable time on the phone helping me download, configure, and use WSJT-X.  I’m happy to be able to operate any digital mode, and JT65 is just fine. (I’m putting Fldigi on the back-burner for now, but may get back to it in the future.)

Dave
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K0UA
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Posts: 4610




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« Reply #13 on: July 10, 2017, 05:54:52 AM »

For those out there that might be following this thread, we did get the garbage print on FLdigi solved, that was the wrong soundcard selected.  The default onboard the computer soundcard was selected instead of the soundcard built into the IC7300.  BUT we still had a problem with rig control from FLdigi.  My setup uses FLrig to control the radio and passes frequency information back to FLdigi. I could not get the FLdigi to communicate correctly by itself to the Rig to change frequency or even to key up the rig. 

There are only so many hours in the day, so we started on something much simpler to interface and get going and that is WSJT-x.  He can download and install FLrig later and we can try this again.  In the meantime he is on a digital mode and has worked a couple of stations on JT65.  You don't realize how much information there is to digest about learning about digital modes and how to operate them until you sit down and try to explain all of this to someone on the phone. It is an awful lot of stuff to have thrown at you in a phone call. But he asked a million questions, and absorbed a lot of info in a short time.

73 de K0UA
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73  James K0UA
ARRL Missouri Technical Specialist
VA7CPC
Member

Posts: 2831




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« Reply #14 on: July 10, 2017, 07:50:45 PM »

Elmers live!

Thanks for the resolution (or at least, most of it).

.    charles
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