Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TenTec\]\s+More\s+on\s+Keying\s+Waveshapes\s+$long$\s*$/>

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TenTec\]\s+More\s+on\s+Keying\s+Waveshapes\s+$long$\s*$/: 5 ]

Total 5 documents matching your query.

1. [TenTec] More on Keying Waveshapes (long) (score: 1): Author: w5yr@att.net (George, W5YR); Date: Wed, 06 Feb 2002 15:15:24 -0600; At Tom Rausch's suggestion, I am posting the following results of examining the CW ID keying waveform of a popular PSK31 program (MixW) by scope to determine the rise and fall times and to examine th; /archives//html/TenTec/2002-02/msg00150.html (15,029 bytes)
2. [TenTec] More on Keying Waveshapes (long) (score: 1): Author: n4py@qvssoftware.com (N4PY); Date: Wed, 6 Feb 2002 16:41:17 -0500; George, I'm a little confused over the cosine shape as you have descibed it. The zero slope points on a cosine curve (or sine curve) are 180 degrees apart and not 90 degrees apart. A sine wave starts; /archives//html/TenTec/2002-02/msg00151.html (18,161 bytes)
3. [TenTec] More on Keying Waveshapes (long) (score: 1): Author: w5yr@att.net (George, W5YR); Date: Wed, 06 Feb 2002 21:04:52 -0600; Carl, you have pointed up both an error and an omission in my overly long treatise. First, you are entirely correct: I said 90 degrees when I meant 180 degrees, or more correctly the appropriate half; /archives//html/TenTec/2002-02/msg00158.html (10,227 bytes)
4. [TenTec] More on Keying Waveshapes (long) (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Thu, 7 Feb 2002 06:02:23 -0500; That's why it is called a raised-sine in this application, since it starts and stops at zero slope. The key to all of this is bandwidth. Assume we start with a square wave from a key and we filter i; /archives//html/TenTec/2002-02/msg00162.html (8,162 bytes)
5. [TenTec] More on Keying Waveshapes (long) (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Thu, 07 Feb 2002 10:50:56 -0600; When you say "raised sine" function, you mean sine squared. That's always 0 or positive, and so has no zero crossings at has a smooth transition from constant value 0 to constant value 1.0000 through; /archives//html/TenTec/2002-02/msg00167.html (7,500 bytes)

Current List: 1 - 5
Page: [1]