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61. Re: [TenTec] Century 21 audio hum (score: 1): Author: Josh Gibbs <gibbsjj@gmail.com>; Date: Tue, 30 May 2017 14:09:11 -0700; Thanks Carl. I think you are right about the headphones - the 'swamping resistor' is achieving the same thing, but I might look for a higher impedance set. Only other set I have are 32 Ohm, and that; /archives//html/TenTec/2017-05/msg00152.html (10,160 bytes)
62. Re: [TenTec] Century 21 audio hum (score: 1): Author: Josh Gibbs <gibbsjj@gmail.com>; Date: Tue, 30 May 2017 14:34:15 -0700; Hi Howie, I opened up the plug on my phones (housing unscrews on this one, other plugs might not), unsoldered the wire that was connected to the 'tip' terminal, and put the resistor between that tip; /archives//html/TenTec/2017-05/msg00155.html (9,927 bytes)
63. Re: [TenTec] Century 21 audio hum (score: 1): Author: Josh Gibbs <gibbsjj@gmail.com>; Date: Tue, 30 May 2017 14:49:25 -0700; Hi Stuart, I know that I can test the diodes, but getting the power board out for testing is a lot of work. I would definitely do it if I suspected the bridge rectifier, which is why I asked about sy; /archives//html/TenTec/2017-05/msg00156.html (10,136 bytes)
64. Re: [TenTec] Century 21 audio hum (score: 1): Author: Josh Gibbs <gibbsjj@gmail.com>; Date: Tue, 30 May 2017 15:05:21 -0700; Sounds like its time for a PTO clean and re-lube! I've been reading about that procedure. Seems that usually the PTO parts are fine and you just need to clean out the old grease and get some fresh gr; /archives//html/TenTec/2017-05/msg00159.html (10,768 bytes)
65. Re: [TenTec] Century 21 audio hum (score: 1): Author: Josh Gibbs <gibbsjj@gmail.com>; Date: Tue, 30 May 2017 15:29:11 -0700; It's a bicycle lubricant. Take a look at this page: http://www.tentecwiki.org/doku.php?id=pto I haven't done a PTO (yet!), so I can't say which method is best. I'd be inclined to tear it down so I ca; /archives//html/TenTec/2017-05/msg00162.html (9,668 bytes)
66. Re: [TenTec] CORSAIR II TROUBLESHOOTING (score: 1): Author: Josh Gibbs <gibbsjj@gmail.com>; Date: Tue, 30 May 2017 16:24:01 -0700; Hi Alan, Just curious if you have tried running the rig from a different power supply? I don't have much experience with Ten-Tec radios (just recently got my first one, a Century 21/Digital), but I l; /archives//html/TenTec/2017-05/msg00163.html (7,553 bytes)
67. Re: [TenTec] Century 21 audio hum (score: 1): Author: Josh Gibbs <gibbsjj@gmail.com>; Date: Tue, 30 May 2017 19:32:22 -0700; Hi Jim, I'd say buzz. I tried to record the sound: https://drive.google.com/file/d/0B_pjAwEfeYcdNUpLb3BQdmZnbk0/view?usp=sharing I also tried to look at it on the scope: https://youtu.be/D7mqyUbNhJw; /archives//html/TenTec/2017-05/msg00171.html (11,781 bytes)
68. Re: [TenTec] Century 21 audio hum (score: 1): Author: Josh Gibbs <gibbsjj@gmail.com>; Date: Tue, 30 May 2017 22:41:45 -0700; Thanks Perry. I've had several people tell me the C21 will run just fine on external 12V. I also found this info on the Ten-Tec DC Circuit Breaker Model 1170: http://www.tentecwiki.org/doku.php?id=11; /archives//html/TenTec/2017-05/msg00173.html (8,610 bytes)

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