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Total 8 documents matching your query.

1. [RTTY] rtty afsk. (score: 1): Author: sparks@quik.com (Ronald A. Stunden); Date: Wed, 20 Mar 2002 09:36:44 -0800; The FT 990 is for sure FSK as I have been using it for some time...VE7YC; /archives//html/RTTY/2002-03/msg00266.html (7,003 bytes)
2. [RTTY] rtty afsk. (score: 1): Author: wa9als@starband.net (WA9ALS - John); Date: Wed, 20 Mar 2002 14:09:42 -0500; A button labeled "FSK" does not FSK make. I doubt the 990 is any different than the 1000MP in this regard. The connections and buttons are labeled FSK, but... as others have said, it surely uses an i; /archives//html/RTTY/2002-03/msg00268.html (7,715 bytes)
3. [RTTY] rtty afsk. (score: 1): Author: chen@mac.com (Kok Chen); Date: Wed, 20 Mar 2002 11:54:16 -0800; If you look at the schematics (AF-UNIT F3178000A) of the FT-990, you will see that the RTTY Key line is used to key a digital sine wave oscillator whose output is binary encoded voltage levels, with; /archives//html/RTTY/2002-03/msg00269.html (7,513 bytes)
4. [RTTY] rtty afsk. (score: 1): Author: chen@mac.com (Kok Chen); Date: Wed, 20 Mar 2002 12:07:38 -0800; Correct. And it is not a very good digital sine wave synthesizer at that. It is, at best, 4-bit sine wave, which means there is at least 3% harmonic distortion. Yep, it is a digital (woohoo!) synthes; /archives//html/RTTY/2002-03/msg00270.html (7,477 bytes)
5. [RTTY] rtty afsk. (score: 1): Author: dhill@cprk.com (Hill, Don); Date: Wed, 20 Mar 2002 14:11:35 -0600; I think we are getting a little technical here which is good. But for simplicity sakes, one can consider AFSK to be when audio is sent from a TNC or sound card to the radio's audio input and FSK is w; /archives//html/RTTY/2002-03/msg00271.html (8,333 bytes)
6. [RTTY] rtty afsk. (score: 1): Author: chen@mac.com (Kok Chen); Date: Wed, 20 Mar 2002 12:28:55 -0800; Well, consider this: If there is an AFSK generator, it means you are using a SSB modulator somewhere along the path. How good is the USB suppression of a typical LSB rig? I also pointed to the harmon; /archives//html/RTTY/2002-03/msg00272.html (7,503 bytes)
7. [RTTY] rtty afsk. (score: 1): Author: wa9als@starband.net (WA9ALS - John); Date: Wed, 20 Mar 2002 19:26:42 -0500; Don, we just want to know one thing while you're waiting... Are you really in a duck blind right now?? ;-); /archives//html/RTTY/2002-03/msg00278.html (7,215 bytes)
8. [RTTY] rtty afsk. (score: 1): Author: k4ww@arrl.net (Shelby Summerville); Date: Wed, 20 Mar 2002 20:32:30 -0500; "WA9ALS - John" <wa9als@starband.net> wrote: "Are you really in a duck blind right now?? ;-)" I'm not sure I've ever seen a 'blind" duck? :) C'Ya; /archives//html/RTTY/2002-03/msg00279.html (7,197 bytes)

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