Zenith H725

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Zenith H725

EdHolland
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Posts: 1,385
Threads: 45
Joined: Nov 2017
City: Menlo Park State, Province, Country: CA

#48

03-27-2025, 10:57 AM

Looking forward to some more work on this today. First off, to isolate the source of noise once and for all. I have a cunning plan to (temporarily) isolate the last IF stage and take the voltage off the suspect transformer. I could then inject modulated 455kHz through the transformerpirimary which should be detected without noise in this configuration, unless the source is another component.

Ed

I don't hold with furniture that talks.

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Messages In This Thread

Zenith H725 - by EdHolland - 03-17-2025, 09:45 PM

RE: Zenith H725 - by MrFixr55 - 03-17-2025, 10:24 PM

RE: Zenith H725 - by EdHolland - 03-18-2025, 11:52 AM

RE: Zenith H725 - by David - 03-18-2025, 01:48 PM

RE: Zenith H725 - by EdHolland - 03-18-2025, 06:09 PM

RE: Zenith H725 - by Arran - 03-18-2025, 10:08 PM

RE: Zenith H725 - by RodB - 03-19-2025, 10:04 AM

RE: Zenith H725 - by EdHolland - 03-19-2025, 10:46 AM

RE: Zenith H725 - by morzh - 03-19-2025, 12:38 PM

RE: Zenith H725 - by RodB - 03-19-2025, 12:55 PM

RE: Zenith H725 - by morzh - 03-19-2025, 01:25 PM

RE: Zenith H725 - by David - 03-19-2025, 03:49 PM

RE: Zenith H725 - by Arran - 03-19-2025, 04:45 PM

RE: Zenith H725 - by Paul Philco322 - 03-19-2025, 08:13 PM

RE: Zenith H725 - by EdHolland - 03-20-2025, 12:34 PM

RE: Zenith H725 - by MrFixr55 - 03-20-2025, 12:59 PM

RE: Zenith H725 - by EdHolland - 03-20-2025, 08:40 PM

RE: Zenith H725 - by MrFixr55 - 03-21-2025, 08:59 AM

RE: Zenith H725 - by radiorich - 03-21-2025, 09:29 AM

RE: Zenith H725 - by EdHolland - 03-21-2025, 09:41 PM

RE: Zenith H725 - by MrFixr55 - 03-21-2025, 09:53 PM

RE: Zenith H725 - by EdHolland - 03-22-2025, 03:17 PM

RE: Zenith H725 - by EdHolland - 03-22-2025, 06:09 PM

RE: Zenith H725 - by RodB - 03-22-2025, 06:52 PM

RE: Zenith H725 - by Arran - 03-22-2025, 07:05 PM

RE: Zenith H725 - by MrFixr55 - 03-22-2025, 08:34 PM

RE: Zenith H725 - by EdHolland - 03-22-2025, 08:40 PM

RE: Zenith H725 - by radiorich - 03-22-2025, 10:22 PM

RE: Zenith H725 - by radiorich - 03-22-2025, 10:35 PM

RE: Zenith H725 - by MrFixr55 - 03-22-2025, 10:39 PM

RE: Zenith H725 - by radiorich - 03-23-2025, 12:17 AM

462ron - by 462ron - 03-23-2025, 08:54 AM

RE: Zenith H725 - by Paul Philco322 - 03-23-2025, 09:18 AM

RE: Zenith H725 - by EdHolland - 03-23-2025, 10:37 AM

RE: Zenith H725 - by radiorich - 03-23-2025, 11:31 AM

462ron - by 462ron - 03-24-2025, 08:22 AM

RE: Zenith H725 - by radiorich - 03-24-2025, 08:34 AM

RE: Zenith H725 - by EdHolland - 03-24-2025, 02:44 PM

RE: Zenith H725 - by EdHolland - 03-24-2025, 06:56 PM

RE: Zenith H725 - by radiorich - 03-24-2025, 10:33 PM

RE: Zenith H725 - by EdHolland - 03-24-2025, 10:46 PM

RE: Zenith H725 - by Arran - 03-24-2025, 11:42 PM

RE: Zenith H725 - by EdHolland - 03-25-2025, 11:49 AM

RE: Zenith H725 - by Arran - 03-25-2025, 06:40 PM

RE: Zenith H725 - by EdHolland - 03-25-2025, 06:42 PM

RE: Zenith H725 - by EdHolland - 03-25-2025, 09:13 PM

RE: Zenith H725 - by radiorich - 03-26-2025, 01:02 AM

RE: Zenith H725 - by EdHolland - 03-27-2025, 10:57 AM

RE: Zenith H725 - by EdHolland - 03-27-2025, 04:25 PM

RE: Zenith H725 - by EdHolland - 03-27-2025, 11:08 PM

RE: Zenith H725 - by EdHolland - 03-28-2025, 03:45 PM

RE: Zenith H725 - by EdHolland - 03-28-2025, 09:53 PM

RE: Zenith H725 - by radiorich - 03-29-2025, 01:27 AM

RE: Zenith H725 - by MrFixr55 - 03-29-2025, 02:33 PM

RE: Zenith H725 - by David - 03-29-2025, 06:28 PM

RE: Zenith H725 - by EdHolland - 03-31-2025, 12:16 PM

RE: Zenith H725 - by rfeenstra - 03-31-2025, 02:37 PM

RE: Zenith H725 - by RodB - 03-31-2025, 02:41 PM

RE: Zenith H725 - by EdHolland - 03-31-2025, 03:03 PM

RE: Zenith H725 - by EdHolland - 04-02-2025, 06:42 PM

RE: Zenith H725 - by EdHolland - 04-02-2025, 08:39 PM

RE: Zenith H725 - by Arran - 04-02-2025, 11:42 PM

RE: Zenith H725 - by radiorich - 04-03-2025, 12:19 AM

RE: Zenith H725 - by EdHolland - 04-03-2025, 10:18 AM

RE: Zenith H725 - by EdHolland - 04-04-2025, 06:18 PM

RE: Zenith H725 - by Paul Philco322 - 04-04-2025, 08:27 PM

RE: Zenith H725 - by EdHolland - 04-04-2025, 09:08 PM

RE: Zenith H725 - by radiorich - 04-05-2025, 01:03 PM

RE: Zenith H725 - by EdHolland - 04-05-2025, 06:10 PM

RE: Zenith H725 - by EdHolland - 04-06-2025, 04:04 PM

RE: Zenith H725 - by EdHolland - 04-06-2025, 07:40 PM

RE: Zenith H725 - by Arran - 04-07-2025, 02:34 PM

RE: Zenith H725 - by EdHolland - 04-07-2025, 05:32 PM

RE: Zenith H725 - by EdHolland - 04-08-2025, 05:51 PM

RE: Zenith H725 - by Arran - 04-08-2025, 06:34 PM

RE: Zenith H725 - by EdHolland - 04-08-2025, 08:23 PM

RE: Zenith H725 - by David - 04-08-2025, 08:52 PM

RE: Zenith H725 - by EdHolland - 04-10-2025, 01:43 PM

RE: Zenith H725 - by David - 04-10-2025, 04:06 PM

RE: Zenith H725 - by EdHolland - 04-10-2025, 06:06 PM

RE: Zenith H725 - by EdHolland - 04-20-2025, 05:09 PM

RE: Zenith H725 - by Paul Philco322 - 04-20-2025, 07:13 PM

RE: Zenith H725 - by David - 04-20-2025, 08:47 PM

RE: Zenith H725 - by radiorich - 04-21-2025, 09:43 AM

RE: Zenith H725 - by EdHolland - 04-24-2025, 08:04 AM

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