Rod Pentode TRF

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Rod Pentode TRF

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ppppenguin

Senior Engineer in Charge

Posts: 7,600
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Location: London N12

#5

30-08-2021, 08:09 AM

That sort of ground plane construction is good for stability and consistency, especially at higher frequencies. Even in low frequency designs, the active devices don't know they're only meant to be working at LF. Probably more of a problem with transistors than valves. Even modest devices like the BC548 have some gain up to 300MHz.

www.borinsky.co.uk Jeffrey Borinsky www.becg.tv

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Messages In This Thread

Rod Pentode TRF - by Murphyv310 - 29-08-2021, 07:58 PM

RE: Rod Pentode TRF - by Amie - 29-08-2021, 08:45 PM

RE: Rod Pentode TRF - by Murphyv310 - 29-08-2021, 08:51 PM

RE: Rod Pentode TRF - by Kalee20 - 30-08-2021, 10:24 PM

RE: Rod Pentode TRF - by Amie - 31-08-2021, 12:24 AM

RE: Rod Pentode TRF - by Kalee20 - 30-08-2021, 07:43 AM

RE: Rod Pentode TRF - by ppppenguin - 30-08-2021, 08:09 AM

RE: Rod Pentode TRF - by Amie - 30-08-2021, 01:44 PM

RE: Rod Pentode TRF - by ppppenguin - 30-08-2021, 01:58 PM

RE: Rod Pentode TRF - by BusyBee - 30-08-2021, 02:36 PM

RE: Rod Pentode TRF - by Murphyv310 - 31-08-2021, 07:37 AM

RE: Rod Pentode TRF - by AdrianPH - 31-08-2021, 08:47 AM

RE: Rod Pentode TRF - by AdrianPH - 31-08-2021, 06:17 PM

RE: Rod Pentode TRF - by Amie - 31-08-2021, 07:07 PM

RE: Rod Pentode TRF - by Murphyv310 - 31-08-2021, 06:36 PM

RE: Rod Pentode TRF - by AdrianPH - 31-08-2021, 08:47 PM

RE: Rod Pentode TRF - by Amie - 01-09-2021, 12:26 AM

RE: Rod Pentode TRF - by BusyBee - 01-09-2021, 08:08 AM

RE: Rod Pentode TRF - by Kalee20 - 01-09-2021, 08:38 AM

RE: Rod Pentode TRF - by Amie - 01-09-2021, 09:40 AM

RE: Rod Pentode TRF - by BusyBee - 01-09-2021, 05:16 PM

RE: Rod Pentode TRF - by Kalee20 - 03-09-2021, 12:28 AM

RE: Rod Pentode TRF - by BusyBee - 03-09-2021, 12:19 PM

RE: Rod Pentode TRF - by Murphyv310 - 01-09-2021, 08:57 PM

RE: Rod Pentode TRF - by BusyBee - 02-09-2021, 06:32 PM

RE: Rod Pentode TRF - by Kalee20 - 01-09-2021, 09:08 PM

RE: Rod Pentode TRF - by Amie - 01-09-2021, 09:33 PM

RE: Rod Pentode TRF - by Kalee20 - 02-09-2021, 12:17 AM

RE: Rod Pentode TRF - by Murphyv310 - 02-09-2021, 07:58 AM

RE: Rod Pentode TRF - by Murphyv310 - 02-09-2021, 01:31 PM

RE: Rod Pentode TRF - by Kalee20 - 02-09-2021, 03:54 PM

RE: Rod Pentode TRF - by Murphyv310 - 02-09-2021, 07:54 PM

RE: Rod Pentode TRF - by Murphyv310 - 02-09-2021, 10:58 PM

RE: Rod Pentode TRF - by Amie - 03-09-2021, 12:34 PM

RE: Rod Pentode TRF - by ppppenguin - 05-09-2021, 07:25 AM

RE: Rod Pentode TRF - by Murphyv310 - 03-09-2021, 12:46 PM

RE: Rod Pentode TRF - by Murphyv310 - 03-09-2021, 12:53 PM

RE: Rod Pentode TRF - by Amie - 03-09-2021, 01:07 PM

RE: Rod Pentode TRF - by Kalee20 - 03-09-2021, 03:04 PM

RE: Rod Pentode TRF - by BusyBee - 03-09-2021, 05:42 PM

RE: Rod Pentode TRF - by Murphyv310 - 04-09-2021, 07:05 AM

RE: Rod Pentode TRF - by Murphyv310 - 04-09-2021, 03:56 PM

RE: Rod Pentode TRF - by BusyBee - 05-09-2021, 07:15 AM

RE: Rod Pentode TRF - by Amie - 05-09-2021, 11:06 AM

RE: Rod Pentode TRF - by ppppenguin - 05-09-2021, 11:37 AM

RE: Rod Pentode TRF - by Murphyv310 - 06-09-2021, 02:31 PM

RE: Rod Pentode TRF - by Kalee20 - 06-09-2021, 09:23 PM

RE: Rod Pentode TRF - by Amie - 06-09-2021, 09:27 PM

RE: Rod Pentode TRF - by Murphyv310 - 07-09-2021, 08:12 AM

RE: Rod Pentode TRF - by Amie - 07-09-2021, 10:19 AM

RE: Rod Pentode TRF - by BusyBee - 08-09-2021, 06:44 AM

RE: Rod Pentode TRF - by Murphyv310 - 07-09-2021, 04:08 PM

RE: Rod Pentode TRF - by Murphyv310 - 08-09-2021, 08:25 PM

RE: Rod Pentode TRF - by Amie - 09-09-2021, 12:22 AM

RE: Rod Pentode TRF - by BusyBee - 10-09-2021, 05:48 PM

RE: Rod Pentode TRF - by Murphyv310 - 09-09-2021, 07:03 AM

RE: Rod Pentode TRF - by Amie - 09-09-2021, 10:07 AM

RE: Rod Pentode TRF - by BusyBee - 09-09-2021, 06:18 PM

RE: Rod Pentode TRF - by Murphyv310 - 09-09-2021, 08:59 PM

RE: Rod Pentode TRF - by Amie - 10-09-2021, 01:09 AM

RE: Rod Pentode TRF - by BusyBee - 10-09-2021, 07:09 AM

RE: Rod Pentode TRF - by Murphyv310 - 10-09-2021, 07:12 AM

RE: Rod Pentode TRF - by Kalee20 - 11-09-2021, 11:55 AM

RE: Rod Pentode TRF - by Amie - 10-09-2021, 04:26 PM

RE: Rod Pentode TRF - by Amie - 10-09-2021, 06:27 PM

RE: Rod Pentode TRF - by Murphyv310 - 10-09-2021, 06:41 PM

RE: Rod Pentode TRF - by Amie - 10-09-2021, 07:01 PM

RE: Rod Pentode TRF - by Murphyv310 - 10-09-2021, 06:35 PM

RE: Rod Pentode TRF - by Kalee20 - 10-09-2021, 06:40 PM

RE: Rod Pentode TRF - by Amie - 10-09-2021, 06:58 PM

RE: Rod Pentode TRF - by Murphyv310 - 10-09-2021, 07:07 PM

RE: Rod Pentode TRF - by BusyBee - 11-09-2021, 07:48 AM

RE: Rod Pentode TRF - by Kalee20 - 11-09-2021, 08:35 AM

RE: Rod Pentode TRF - by BusyBee - 17-09-2021, 06:30 PM

RE: Rod Pentode TRF - by Mike Watterson - 19-09-2021, 01:49 PM

RE: Rod Pentode TRF - by BusyBee - 21-09-2021, 06:38 AM

RE: Rod Pentode TRF - by Mike Watterson - 22-09-2021, 02:18 PM

RE: Rod Pentode TRF - by Kalee20 - 22-09-2021, 03:48 PM

RE: Rod Pentode TRF - by Mike Watterson - 23-09-2021, 09:45 AM

RE: Rod Pentode TRF - by Kalee20 - 23-09-2021, 07:13 PM

RE: Rod Pentode TRF - by Murphyv310 - 11-09-2021, 08:51 AM

RE: Rod Pentode TRF - by Murphyv310 - 11-09-2021, 09:11 AM

RE: Rod Pentode TRF - by AdrianPH - 11-09-2021, 01:31 PM

RE: Rod Pentode TRF - by BusyBee - 12-09-2021, 04:47 PM

RE: Rod Pentode TRF - by Kalee20 - 12-09-2021, 09:18 PM

RE: Rod Pentode TRF - by Mike Watterson - 18-09-2021, 02:25 PM

RE: Rod Pentode TRF - by Kalee20 - 18-09-2021, 05:47 PM

RE: Rod Pentode TRF - by Kalee20 - 18-09-2021, 09:26 PM

RE: Rod Pentode TRF - by Mike Watterson - 19-09-2021, 01:45 PM

RE: Rod Pentode TRF - by Murphyv310 - 18-09-2021, 06:08 PM

RE: Rod Pentode TRF - by AdrianPH - 22-09-2021, 06:53 PM

RE: Rod Pentode TRF - by Mike Watterson - 23-09-2021, 09:39 AM

RE: Rod Pentode TRF - by BusyBee - 23-09-2021, 06:47 AM

RE: Rod Pentode TRF - by Mike Watterson - 23-09-2021, 10:22 PM

RE: Rod Pentode TRF - by Kalee20 - 24-09-2021, 07:36 AM

RE: Rod Pentode TRF - by AdrianPH - 27-09-2021, 09:22 PM

RE: Rod Pentode TRF - by Murphyv310 - 08-10-2021, 07:25 PM

RE: Rod Pentode TRF - by Murphyv310 - 09-10-2021, 02:10 PM

RE: Rod Pentode TRF - by Murphyv310 - 09-10-2021, 02:59 PM

RE: Rod Pentode TRF - by Kalee20 - 10-10-2021, 08:51 AM

RE: Rod Pentode TRF - by BusyBee - 10-10-2021, 05:31 PM

RE: Rod Pentode TRF - by Murphyv310 - 10-10-2021, 11:02 AM

RE: Rod Pentode TRF - by Murphyv310 - 10-10-2021, 11:35 AM

RE: Rod Pentode TRF - by Murphyv310 - 10-10-2021, 11:42 AM

RE: Rod Pentode TRF - by Mike Watterson - 10-10-2021, 12:30 PM

RE: Rod Pentode TRF - by Kalee20 - 10-10-2021, 11:56 AM

RE: Rod Pentode TRF - by Murphyv310 - 10-10-2021, 01:12 PM

RE: Rod Pentode TRF - by Mike Watterson - 10-10-2021, 05:07 PM

RE: Rod Pentode TRF - by Mike Watterson - 10-10-2021, 06:25 PM

RE: Rod Pentode TRF - by mister35mm - 19-01-2022, 09:34 AM

RE: Rod Pentode TRF - by BusyBee - 20-01-2022, 01:17 PM

RE: Rod Pentode TRF - by Murphyv310 - 21-01-2022, 09:53 AM

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