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Total 7 documents matching your query.

1. [TenTec] PM-3 Hum problem (score: 1): Author: gmaier@ultranet.com (George Maier); Date: Tue, 28 Mar 2000 12:23:47 -0500; Hi T-T fans: This may have come up before, so I'll apologize in advance. My PM-3 has a very pronounced hum on receive. The hum appears to get stronger when peaking the receiver tuning control. It is; /archives//html/TenTec/2000-03/msg00392.html (7,695 bytes)
2. [TenTec] PM-3 Hum problem (score: 1): Author: N4NT@charter.net (Michael O. Hyder); Date: Tue, 28 Mar 2000 14:53:31 -0500; Do you have any stray magnetic fields around the rig (another power supply or the base of a fluorescent desk lamp, for instance)? Mike N4NT@charter.net -- FAQ on WWW: http://www.contesting.com/tentec; /archives//html/TenTec/2000-03/msg00402.html (8,166 bytes)
3. [TenTec] PM-3 Hum problem (score: 1): Author: gctotten@juno.com (Gerald C Totten); Date: Tue, 28 Mar 2000 17:27:34 -0500; George, The hum is probably the result of the local oscilator being radiated in to the house wiring, modulated by the AC ( rectifiers, light dimmers etc.. ) then being picked up on the antenna. This; /archives//html/TenTec/2000-03/msg00408.html (7,512 bytes)
4. [TenTec] PM-3 Hum problem (score: 1): Author: winjones@ix.netcom.com (Winston F. Jones); Date: Tue, 28 Mar 2000 18:32:40 -0500; The PM-3 and other direct conversion receivers all suffer from something called common mode interference when used with an AC supply. The easiest way to eliminate this problem is to use lantern batte; /archives//html/TenTec/2000-03/msg00413.html (9,165 bytes)
5. [TenTec] PM-3 Hum problem (score: 1): Author: weingaertner@nac.net (Robert Weingaertner); Date: Tue, 28 Mar 2000 19:49:46 -0500; Many direct conversion receivers have a hum on receive when using an AC supply. Its caused by some common mode noise that gets into the detector and is amplified by the high gain audio stage. Differe; /archives//html/TenTec/2000-03/msg00414.html (8,985 bytes)
6. [TenTec] PM-3 Hum problem (score: 1): Author: gmaier@ultranet.com (George Maier); Date: Wed, 29 Mar 2000 11:29:07 -0500; "What is happening is that some of the local oscillator signal is getting into the power supply where it is modulated by the a.c. in the rectifier diodes, then it is being re-radiated by the wiring a; /archives//html/TenTec/2000-03/msg00421.html (8,177 bytes)
7. [TenTec] PM-3 Hum problem (score: 1): Author: JDuffy@aol.com (JDuffy@aol.com); Date: Wed, 29 Mar 2000 14:14:44 EST; Those darn PM-3 never did learn the words. All they could ever do is hum. Hi Hi! Regards, Duffy - WB8NUT -- FAQ on WWW: http://www.contesting.com/tentecfaq.htm Submissions: tentec@contesting.com Admi; /archives//html/TenTec/2000-03/msg00438.html (7,277 bytes)

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