- 1. [RFI] Rcvr burn-out from HV field (score: 1)
- Author: i4jmy@iol.it (i4jmy@iol.it)
- Date: Wed, 5 Sep 2001 10:04:26 +0200
- The only way I can image something like that can happen is with an extremely high impedance device coupled DC (or very low freq. AC) and a transient spike in the power line, rather than field at 60 H
- /archives//html/RFI/2001-09/msg00015.html (7,236 bytes)
- 2. [RFI] RFI levels (score: 1)
- Author: i4jmy@iol.it"<i4jmy@iol.it (i4jmy@iol.it)
- Date: Thu, 1 Mar 2001 15:20:30 +0100
- a 3 If I understand correctly, those numbers represent an external wide band noise floor. Being not a noise produced internally to a receiver (or by a low noise instrument like a spectrum analyzer),
- /archives//html/RFI/2001-03/msg00001.html (8,089 bytes)
- 3. [RFI] VHF-AM radios (score: 1)
- Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara)
- Date: Tue, 23 Jan 2001 23:25:17 +0100
- The FM carrier must be placed on the IF filter slope (side) tuning the signal more than a bit off the filter window. To obtain a decent detection the IF filter shouldn't have a good shape factor (LC
- /archives//html/RFI/2001-01/msg00030.html (8,564 bytes)
- 4. [RFI] AM Station Overload - N5KM (score: 1)
- Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara)
- Date: Wed, 27 Dec 2000 23:47:25 +0100
- very Coil and capacitor must be adequate (isolation and Q) to the used power at 3.5 MHz to avoid arcings or detuning because of heating when transmitting. Also the ratio of C and L should be chosen
- /archives//html/RFI/2000-12/msg00047.html (7,711 bytes)
- 5. [RFI] R: [TowerTalk] Using Split Beads (score: 1)
- Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara)
- Date: Sat, 13 Nov 1999 14:13:34 +0100
- --Messaggio Originale-- Da: Herb Rosenberg <herbr@netcom.com> A: <towertalk@contesting.com>; <rfi@contesting.com> Data invio: sabato 13 novembre 1999 5.57 Oggetto: [TowerTalk] Using Split Beads of Ye
- /archives//html/RFI/1999-11/msg00013.html (7,672 bytes)
- 6. R: [RFI] Re:trouble shooting techniques for noise (score: 1)
- Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara)
- Date: Fri, 15 Oct 1999 15:16:29 +0200
- Concerning the power line noise, I and many others experienced the opposite with noise on DRY days and quietness or better situation, anyway, on the wet ones. Probably this apply to QRM generated by
- /archives//html/RFI/1999-10/msg00013.html (8,032 bytes)
- 7. R: [RFI] Re:trouble shooting techniques for noise (score: 1)
- Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara)
- Date: Sat, 16 Oct 1999 01:31:15 +0200
- --Messaggio Originale-- Da: EDWARDS, EDDIE J <eedwards@oppd.com> A: 'rfi' <rfi@contesting.com> Cc: 'Maurizio Panicara' <i4jmy@iol.it> Data invio: venerdì 15 ottobre 1999 16.17 Oggetto: RE: [RF
- /archives//html/RFI/1999-10/msg00014.html (7,432 bytes)
- 8. R: [RFI] Doppler DF (score: 1)
- Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara)
- Date: Sat, 8 May 1999 13:08:30 +0200
- I doubt, doppler direction finding is generally used to point a signal source from a moving environment. Doppler technique can be applied to coherent and narrowband signals and most of the times nois
- /archives//html/RFI/1999-05/msg00013.html (7,769 bytes)
- 9. R: [RFI] 6 meter TVI (audio only) (score: 1)
- Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara)
- Date: Wed, 12 May 1999 21:08:24 +0200
- It looks RF detected from TV audio amplifier rather than other causes. What is a bit strange is not to have the same problem on lower frequencies. I would place some ferrite (one for each input or ou
- /archives//html/RFI/1999-05/msg00018.html (9,322 bytes)
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