Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TenTec\]\s+Orion\s+AGC\s+setting\s+for\s+QRN\s*$/>

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TenTec\]\s+Orion\s+AGC\s+setting\s+for\s+QRN\s*$/: 16 ]

Total 16 documents matching your query.

1. [TenTec] Orion AGC setting for QRN (score: 1): Author: "Steve Ellington" <N4LQ@igLou.com>; Date: Mon, 24 May 2004 02:55:09 -0000; I just built the little Elecraft signal generator and ran some test during high QRN levels. Using a coax splitter, I fed the generator and the antenna together into the Orion. The signal was very wea; /archives//html/TenTec/2004-05/msg00751.html (7,289 bytes)
2. Re: [TenTec] Orion AGC setting for QRN (score: 1): Author: Sinisa Hristov <shristov@ptt.yu>; Date: Mon, 24 May 2004 04:26:24 -0400; Reception agains QRN is fundamentally different from reception against steady backround noise. Setting decay rate to maximum effectively clips the input signal, be it CW, noise or QRN. Slightly less; /archives//html/TenTec/2004-05/msg00762.html (8,219 bytes)
3. Re: [TenTec] Orion AGC setting for QRN (score: 1): Author: "Marijan Miletic, S56A" <s56a@bit.si>; Date: Mon, 24 May 2004 23:35:46 +0200; The proper tool for QRN fighting is N_oise B_lanker. AGC should not repond to short pulses at all. Unless it protects DSP A/D from overflow. W8JI RX IMD measurements with 10 kHz spacing seems to be U; /archives//html/TenTec/2004-05/msg00794.html (7,432 bytes)
4. Re: [TenTec] Orion AGC setting for QRN (score: 1): Author: "Steve Ellington" <N4LQ@igLou.com>; Date: Mon, 24 May 2004 21:54:00 -0000; A noise blanker for QRN? Come on..... Steve N4LQ _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec; /archives//html/TenTec/2004-05/msg00796.html (8,097 bytes)
5. Re: [TenTec] Orion AGC setting for QRN (score: 1): Author: Kc9cdt@aol.com; Date: Mon, 24 May 2004 17:57:55 EDT; Come on fellows, NB is for constant pulse noise (like autos & dimmers), not static etc, right. Or have I had it wrong all these years? Lee _______________________________________________ TenTec maili; /archives//html/TenTec/2004-05/msg00798.html (7,824 bytes)
6. Re: [TenTec] Orion AGC setting for QRN (score: 1): Author: "Steve Ellington" <N4LQ@igLou.com>; Date: Mon, 24 May 2004 22:03:06 -0000; I ran the test and published the results. 2000 DB/S is exactly where it worked best. As a matter for fact 2000 DB/S is the only place it worked. Your statement indicates just the opposite. All I can; /archives//html/TenTec/2004-05/msg00800.html (10,610 bytes)
7. Re: [TenTec] Orion AGC setting for QRN (score: 1): Author: Sinisa Hristov <shristov@ptt.yu>; Date: Mon, 24 May 2004 18:18:03 -0400; Not on most contemporary receivers, including Orion and MkV. Pulsewidth? Unfortunately, most AGC systems are peak-responding. In what sense? 73, Sinisa YT1NT, VA3TTN _________________________________; /archives//html/TenTec/2004-05/msg00804.html (8,258 bytes)
8. Re: [TenTec] Orion AGC setting for QRN (score: 1): Author: Sinisa Hristov <shristov@ptt.yu>; Date: Mon, 24 May 2004 18:20:46 -0400; NB doesn't care for the repetitive nature of pulses. It is tailored to a certain range of pulse widths, and QRN doesn't seem to fit in. 73, Sinisa YT1NT, VA3TTN ______________________________________; /archives//html/TenTec/2004-05/msg00805.html (8,063 bytes)
9. Re: [TenTec] Orion AGC setting for QRN (score: 1): Author: Sinisa Hristov <shristov@ptt.yu>; Date: Mon, 24 May 2004 18:38:26 -0400; I certainly trust your results and would like to understand what is actually going on, i.e., I'd like to go a step beyond simply following recipes. Depending on QRN-to-signal ratio, it takes some tim; /archives//html/TenTec/2004-05/msg00807.html (9,022 bytes)
10. Re: [TenTec] Orion AGC setting for QRN (score: 1): Author: "Steve Ellington" <N4LQ@igLou.com>; Date: Mon, 24 May 2004 22:58:20 -0000; Probably like you say... 1 crash per second of QRN. Slightly more than the number of Orion crashes per day :*) Using a constant carrier of 1uv mixed with the antenna input, when the crash occured, th; /archives//html/TenTec/2004-05/msg00808.html (10,956 bytes)
11. Re: [TenTec] Orion AGC setting for QRN (score: 1): Author: "Marijan Miletic, S56A" <s56a@bit.si>; Date: Tue, 25 May 2004 15:34:35 +0200; OC Pirotjanac, YT1NT didn't read Collins book on HF SSB carefully enough :-) QRN is random short but very strong pulse. If it is allowed to go thru comlete RX chain to AF, it would be streched a lot; /archives//html/TenTec/2004-05/msg00832.html (9,715 bytes)
12. Re: [TenTec] Orion AGC setting for QRN (score: 1): Author: Sinisa Hristov <shristov@ptt.yu>; Date: Tue, 25 May 2004 10:23:32 -0400; As short as ignition pulses? Is any of them actually effective against QRN? OK, so the 10 kHz spacing is also IC7800 and FT9000 tailored :-) 73, Sinisa YT1NT, VA3TTN _________________________________; /archives//html/TenTec/2004-05/msg00834.html (9,043 bytes)
13. [TenTec] Orion AGC setting for QRN (score: 1): Author: Bill Tippett <btippett@alum.mit.edu>; Date: Tue, 25 May 2004 13:17:59 -0400; Hi Mario and Sinisa, A few coments below (**): **The original context of this subject was for strong atmospheric QRN (from lightning), and I agree with Sinisa that no noise blanker works for noise of; /archives//html/TenTec/2004-05/msg00840.html (10,833 bytes)
14. Re: [TenTec] Orion AGC setting for QRN (score: 1): Author: "Marijan Miletic, S56A" <s56a@bit.si>; Date: Wed, 26 May 2004 12:42:28 +0200; Just a biger spark! Lightning energy spectra goes to 100 kHz which implies basic 10 usec pulse slightly streched by 15 kHz first IF filter. Repetitive nature interference is more annoying for human; /archives//html/TenTec/2004-05/msg00865.html (8,432 bytes)
15. Re: [TenTec] Orion AGC setting for QRN (score: 1): Author: "Jim Brown" <jim@audiosystemsgroup.com>; Date: Wed, 26 May 2004 07:55:40 -0500; Actually, lightning is just getting started spectrally at 100 kHz. According to IEEE studies, lightning energy is CENTERED around a broad peak roughly in the middle of the AM broacast band. That mean; /archives//html/TenTec/2004-05/msg00867.html (8,590 bytes)
16. Re: [TenTec] Orion AGC setting for QRN (score: 1): Author: "Marijan Miletic, S56A" <s56a@bit.si>; Date: Wed, 26 May 2004 15:32:22 +0200; The above implies much shorter lightning pulse lenght even more suitable for NB circuits! My memory is 1945 version :-) 73 de Mario, S56A, N1YU _______________________________________________ TenTec; /archives//html/TenTec/2004-05/msg00869.html (8,119 bytes)

Current List: 1 - 16
Page: [1]