Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*LF\:\s+Image\-Cancelling\s+Exciter\s*$/>

Return to KLUBNL.PL main page

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*LF\:\s+Image\-Cancelling\s+Exciter\s*$/: 7 ]

Total 7 documents matching your query.

1. LF: Image-Cancelling Exciter (score: 1): Author: "John Andrews" <[email protected]>; Date: Sun, 16 Jan 2005 21:36:40 +0100; I've been tinkering with a phasing exciter that uses easy-to-get parts and produces a very clean signal from the sound card quadrature outputs in Jason and SpecLab. A preliminary schematic (hand-draw; /rsgb_lf_group-archives/html/rsgb_lf_group/2005-01/msg00384.html (9,255 bytes)
2. Re: LF: Image-Cancelling Exciter (score: 1): Author: Wolf DL4YHF <[email protected]>; Date: Sun, 16 Jan 2005 22:30:00 +0100; Hi John, Nice drawing, and much more complete than my "sketch" hi.. One question... Was the L.O. using 74AC74 + 74AC08 better than the simple 74 HC 107 method ? ...and one suggestion: To eliminate th; /rsgb_lf_group-archives/html/rsgb_lf_group/2005-01/msg00386.html (9,433 bytes)
3. Re: LF: Image-Cancelling Exciter (score: 1): Author: "John Andrews" <[email protected]>; Date: Sun, 16 Jan 2005 23:04:40 +0100; Wolf, Was the L.O. using 74AC74 + 74AC08 better than the simple 74 HC 107 method ? No! I had done the 74/08 section before you produced the schematic for the HC107. It is simpler. Is that dual-JK ver; /rsgb_lf_group-archives/html/rsgb_lf_group/2005-01/msg00387.html (9,693 bytes)
4. Re: LF: Image-Cancelling Exciter (score: 1): Author: "John Andrews" <[email protected]>; Date: Mon, 17 Jan 2005 00:10:11 +0100; Wolf, A quick test of capacitor coupling the op-amps to the HC4066 shows no problems. More research to follow... JA; /rsgb_lf_group-archives/html/rsgb_lf_group/2005-01/msg00389.html (8,593 bytes)
5. Re: LF: Image-Cancelling Exciter (score: 1): Author: Rik Strobbe <[email protected]>; Date: Mon, 17 Jan 2005 09:12:24 +0100; One other note at this point. I attempted to use a CD4017B, but it just wasn't fast enough to provide good carrier and sideband suppression. This is definitely a project for HC or AC logic. John, if; /rsgb_lf_group-archives/html/rsgb_lf_group/2005-01/msg00396.html (9,413 bytes)
6. Re: LF: Image-Cancelling Exciter (score: 1): Author: "John Andrews" <[email protected]>; Date: Mon, 17 Jan 2005 13:40:51 +0100; Rik, if you want to use 4000 series logic in fast speed applciactions it can be used at 15V. This will increase the speed by a factor 3..4 compared to 5V. Agreed. But I would not have been able to us; /rsgb_lf_group-archives/html/rsgb_lf_group/2005-01/msg00403.html (9,116 bytes)
7. Re: LF: Image-Cancelling Exciter (score: 1): Author: Wolf DL4YHF <[email protected]>; Date: Mon, 17 Jan 2005 20:49:01 +0100; Hi Rik and John, Another problem with the 4017 "Johnson" counter is, the output timing is not very precise because it is an asynchronous counter. To divide by 4, one of the 4017's outputs (Q4) must b; /rsgb_lf_group-archives/html/rsgb_lf_group/2005-01/msg00410.html (10,809 bytes)

Current List: 1 - 7
Page: [1]