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N1RPN
11-28-2016, 06:56 PM
Hi, I'm N1RPN and I'm learning to run RTTY using Cocoa Modem 2.0 running on a Mac G4, and Icom 720a and a 40 meter dipole.

But I see in the Wideband RTTY waterfall display a signal that appears as 3 signals side by side and interesting Lissajous patterns in the tuning display. Any idea what this is?

73 N1RPN

KG4NEL
11-28-2016, 08:16 PM
https://imgflip.com/s/meme/Ancient-Aliens.jpg

NQ6U
11-28-2016, 08:19 PM
Post a screen shot--command-shift-3

KC2UGV
11-28-2016, 09:33 PM
Post a screen shot--command-shift-3
^^^That

Kinda hard to tell from a verbal descript.

N1RPN
11-29-2016, 01:24 PM
Does this help?

15044
`

N1RPN
11-29-2016, 01:30 PM
And from the same transmission but later.

AA1OH doesn't recognize the sound and he's good.

15045

KG4CGC
11-29-2016, 02:07 PM
Gibberish being caused by your connections between the radio and computer. Try ferrite beads and or better shielded cables to keep out interference.

WØTKX
11-29-2016, 05:54 PM
The Lissajous Crown of Thorns

N1RPN
11-29-2016, 06:31 PM
Nice watch you got there KG4CGC, but FWIW this is the system that I use to make RTTY contacts, read PSK and receive HF Weather Fax transmissions. This weekend past, after I screwed up my courage to put my hat on a stick, poke it around the corner and try a live CW contact, I used this system to tell me that buzzing I hear everywhere was 50 WPM CW evenly spaced about 1KHz apart. 73 N1RPN.

KG4CGC
11-30-2016, 12:01 AM
Join us in general chat for a drink.

OK, if that's not it then that's all I got. I had a similar issues in psk and sorted it better interface cables.

N1RPN
11-30-2016, 09:54 AM
Join us in general chat for a drink.

OK, if that's not it then that's all I got. I had a similar issues in psk and sorted it better interface cables.

That's FB KG4CGC. Thanks for the help. 73 N1RPN

N8YX
11-30-2016, 12:30 PM
Have an audio clip of the transmission?

N1RPN
12-03-2016, 01:50 PM
Strangely enough, yes I do. For an amateur radio forum you think there'd be a way to attach an audio file. But I can't find it.

So, here we go:

http://arts-attic.com/blog/?p=1532

kb2vxa
12-03-2016, 03:10 PM
I don't think, I know, so I'm telling you how it's done. First make sure the file isn't too large (check limits when attaching file) and zip it. Click on "go advanced", click on "manage attachments" and upload it, easy peasy. Please don't ask how I got the file and processed it for uploading, if I tell you then I'd have to shoot you.

KC2UGV
12-03-2016, 06:57 PM
Sounds like power supply noise to me.

WØTKX
12-03-2016, 07:13 PM
Maybe. I'm wondering if it shows up on other frequencies. In other words, multiple spots.

Also wondering if it "crawls" slowly in frequency over time.

N1RPN
12-03-2016, 08:43 PM
Maybe. I'm wondering if it shows up on other frequencies. In other words, multiple spots.

Also wondering if it "crawls" slowly in frequency over time.

This has been at 7.042 MHz for at least two weeks. I watched what I assume to be a QSO this afternoon trying to tape a good sample, but I kept missing the start tone and the audio tape with the end tone and a couple of back and forths came in at around 10 MB in length and I chose not to burn that much satellite time.

WØTKX
12-04-2016, 10:39 AM
Strangely enough, yes I do. For an amateur radio forum you think there'd be a way to attach an audio file. But I can't find it.

So, here we go:

http://arts-attic.com/blog/?p=1532

http://www.udxf.nl/