Talk:PSK31

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Contents 1 Bandwidth 2 Sound Sample 3 AM Modulation 4 Dead link 5 CB

[edit] Bandwidth

The image doesn't show PSK31 bandwidth. LeighKlotz

[edit] Sound Sample

There is no sound sample. LeighKlotz

[edit] AM Modulation

PSK is not produced by modulating the RF carrier directly; that would produce AM. LeighKlotz

I believe PSK is usually FM modulated, although I think it can be AM modulated. This is true for most data radio modulation modes, even standard TV signals. Esentially, the data is modulated to an audio frequency signal, which is in turn modulated, usually with AM or FM. --ssd 15:40, 24 December 2005 (UTC)

PSK31 uses Single sideband modulation - while one could use FM or AM to send the audio generated by a PSK program, the resulting signal would NOT be a PSK31 waveform, and would NOT have the narrow bandwidth of PSK31. In effect, the computer + the SSB transmitter form a Software defined radio with the first local oscillator being the numerically-controlled oscillator in the PSK software and the first intermediate frequency being the audio signal out of the soundcard. N0YKG 19:54, 10 April 2006 (UTC)

[edit] Dead link

During several automated bot runs the following external link was found to be unavailable. Please check if the link is in fact down and fix or remove it in that case!

• http://pskmail.wikispaces.org/
  • In PSK31 on Mon Jul 17 14:34:24 2006, Socket Error: (-2, 'Name or service not known')
  • In PSK31 on Thu Jul 27 00:32:23 2006, Socket Error: (-2, 'Name or service not known')

---

maru (talk) contribs 04:32, 27 July 2006 (UTC)

I was able to get to the link. Rearden9 12:58, 27 July 2006 (UTC)

[edit] CB

Somebody wrote: "A serious user of the Citizen's Band is an oxymoron". Well, first thanks for your comment, which really added much value to the page. I can't speak for the USA, but here in Europe we have some CBers who take their art seriously. Some who I have spoken with could probably just walk into the Advanced exam and pass it with flying colours. They just don't want to, as they prefer the friendly, inclusive atmosphere of CB to the self-righteous, cliquish, 'anal' image of ham radio that such comments project. Chris G4PDJ 08:08, 8 February 2007 (UTC)