Fisher 500C restoration

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Fisher 500C restoration

Ron Ramirez
Silent Key

Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand State, Province, Country: Indiana

02-03-2019, 07:58 PM

You say you were gifted that receiver?

Icon_eek

Some people have all the luck...Hmph! Icon_smile

But seriously...

My suggestions:

Get it up and running stock. Add a CL-80 inrush current limiter in one leg of the AC line.

Once you have it going, then you really need to add, at the minimum, the IBAM (Independent Bias Adjustment Modification) to help preserve the life of those expensive 7591A tubes. (I just bought a set of four new Russian Tung-Sol 7591As for my Fisher 500-B.) EFB™ (enhanced feedback) would also be a good idea. We'll get into all that when you're ready.

I have not built an EFB™ circuit yet, but I did put IBAM in my Fisher TA-600 to make those Soviet military surplus 6П14П-EB tubes a bit happier.

--
Ron Ramirez
Ferdinand IN

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Messages In This Thread

Fisher 500C restoration - by EdHolland - 02-03-2019, 06:03 PM

RE: Fisher 500C restoration - by morzh - 02-03-2019, 06:11 PM

RE: Fisher 500C restoration - by Ron Ramirez - 02-03-2019, 06:50 PM

RE: Fisher 500C restoration - by EdHolland - 02-03-2019, 07:25 PM

RE: Fisher 500C restoration - by Ron Ramirez - 02-03-2019, 07:58 PM

RE: Fisher 500C restoration - by EdHolland - 02-04-2019, 09:07 PM

RE: Fisher 500C restoration - by EdHolland - 02-20-2019, 05:07 PM

RE: Fisher 500C restoration - by KCMike - 02-20-2019, 06:03 PM

RE: Fisher 500C restoration - by Ron Ramirez - 02-20-2019, 11:11 PM

RE: Fisher 500C restoration - by EdHolland - 02-21-2019, 03:10 PM

RE: Fisher 500C restoration - by EdHolland - 02-25-2019, 06:46 PM

RE: Fisher 500C restoration - by EdHolland - 03-01-2019, 05:02 PM

RE: Fisher 500C restoration - by EdHolland - 03-15-2019, 08:22 PM

RE: Fisher 500C restoration - by TV MAN - 03-16-2019, 09:20 AM

RE: Fisher 500C restoration - by EdHolland - 03-17-2019, 08:35 PM

RE: Fisher 500C restoration - by EdHolland - 03-18-2019, 10:29 PM

RE: Fisher 500C restoration - by EdHolland - 03-20-2019, 09:27 PM

RE: Fisher 500C restoration - by EdHolland - 03-21-2019, 03:23 PM

RE: Fisher 500C restoration - by EdHolland - 03-22-2019, 10:44 PM

RE: Fisher 500C restoration - by EdHolland - 03-22-2019, 11:12 PM

RE: Fisher 500C restoration - by morzh - 03-23-2019, 11:45 AM

RE: Fisher 500C restoration - by morzh - 03-23-2019, 03:40 PM

RE: Fisher 500C restoration - by EdHolland - 03-23-2019, 08:23 PM

RE: Fisher 500C restoration - by morzh - 03-23-2019, 08:29 PM

RE: Fisher 500C restoration - by Ron Ramirez - 03-23-2019, 10:20 PM

RE: Fisher 500C restoration - by EdHolland - 03-23-2019, 10:22 PM

RE: Fisher 500C restoration - by EdHolland - 03-23-2019, 11:09 PM

RE: Fisher 500C restoration - by morzh - 03-24-2019, 10:45 AM

RE: Fisher 500C restoration - by Phlogiston - 03-24-2019, 01:11 PM

RE: Fisher 500C restoration - by EdHolland - 03-24-2019, 02:15 PM

RE: Fisher 500C restoration - by morzh - 03-24-2019, 02:18 PM

RE: Fisher 500C restoration - by EdHolland - 03-24-2019, 10:56 PM

RE: Fisher 500C restoration - by morzh - 03-25-2019, 09:07 AM

RE: Fisher 500C restoration - by EdHolland - 03-27-2019, 01:20 PM

RE: Fisher 500C restoration - by EdHolland - 03-30-2019, 07:49 PM

RE: Fisher 500C restoration - by morzh - 03-31-2019, 10:51 AM

RE: Fisher 500C restoration - by EdHolland - 03-31-2019, 07:31 PM

RE: Fisher 500C restoration - by EdHolland - 03-31-2019, 09:59 PM

RE: Fisher 500C restoration - by morzh - 03-31-2019, 10:23 PM

RE: Fisher 500C restoration - by EdHolland - 03-31-2019, 10:55 PM

RE: Fisher 500C restoration - by morzh - 04-01-2019, 08:32 AM

RE: Fisher 500C restoration - by TV MAN - 04-02-2019, 11:38 AM

RE: Fisher 500C restoration - by Ron Ramirez - 04-02-2019, 12:30 PM

RE: Fisher 500C restoration - by EdHolland - 04-07-2019, 10:10 PM

RE: Fisher 500C restoration - by EdHolland - 04-14-2019, 10:04 PM

RE: Fisher 500C restoration - by Phlogiston - 04-15-2019, 11:41 AM

RE: Fisher 500C restoration - by EdHolland - 04-15-2019, 02:51 PM

RE: Fisher 500C restoration - by Phlogiston - 04-15-2019, 06:23 PM

RE: Fisher 500C restoration - by EdHolland - 04-21-2019, 02:36 AM

RE: Fisher 500C restoration - by EdHolland - 04-21-2019, 02:45 PM

RE: Fisher 500C restoration - by EdHolland - 04-21-2019, 09:44 PM

RE: Fisher 500C restoration - by EdHolland - 04-23-2019, 12:51 PM

RE: Fisher 500C restoration - by EdHolland - 04-25-2019, 03:57 PM

RE: Fisher 500C restoration - by EdHolland - 04-30-2019, 08:05 PM

RE: Fisher 500C restoration - by EdHolland - 05-05-2019, 05:35 PM

RE: Fisher 500C restoration - by EdHolland - 05-12-2019, 03:35 PM

RE: Fisher 500C restoration - by Ron Ramirez - 05-12-2019, 04:26 PM

RE: Fisher 500C restoration - by EdHolland - 05-12-2019, 07:15 PM

RE: Fisher 500C restoration - by EdHolland - 05-19-2019, 09:07 PM

RE: Fisher 500C restoration - by morzh - 05-20-2019, 02:37 PM

RE: Fisher 500C restoration - by EdHolland - 05-20-2019, 06:05 PM

RE: Fisher 500C restoration - by Ron Ramirez - 05-20-2019, 08:57 PM

RE: Fisher 500C restoration - by morzh - 05-21-2019, 12:22 PM

RE: Fisher 500C restoration - by EdHolland - 05-23-2019, 12:07 AM

RE: Fisher 500C restoration - by EdHolland - 05-23-2019, 01:30 AM

RE: Fisher 500C restoration - by EdHolland - 05-24-2019, 03:28 PM

RE: Fisher 500C restoration - by Ron Ramirez - 05-25-2019, 06:45 PM

RE: Fisher 500C restoration - by EdHolland - 05-25-2019, 09:44 PM

RE: Fisher 500C restoration - by EdHolland - 05-29-2019, 11:10 AM

RE: Fisher 500C restoration - by EdHolland - 05-30-2019, 10:42 AM

RE: Fisher 500C restoration - by EdHolland - 06-01-2019, 11:49 PM

RE: Fisher 500C restoration - by Ron Ramirez - 06-02-2019, 08:07 AM

RE: Fisher 500C restoration - by EdHolland - 06-02-2019, 11:09 PM

RE: Fisher 500C restoration - by EdHolland - 06-08-2019, 11:47 PM

RE: Fisher 500C restoration - by EdHolland - 06-10-2019, 04:04 PM

RE: Fisher 500C restoration - by EdHolland - 07-10-2019, 08:52 PM

RE: Fisher 500C restoration - by Ron Ramirez - 07-12-2019, 10:43 PM

RE: Fisher 500C restoration - by EdHolland - 07-14-2019, 11:02 PM

RE: Fisher 500C restoration - by EdHolland - 07-20-2019, 11:18 PM

RE: Fisher 500C restoration - by EdHolland - 07-24-2019, 01:51 AM

RE: Fisher 500C restoration - by gregb - 07-24-2019, 07:18 AM

RE: Fisher 500C restoration - by EdHolland - 07-24-2019, 05:48 PM

RE: Fisher 500C restoration - by rfeenstra - 07-24-2019, 06:24 PM

RE: Fisher 500C restoration - by EdHolland - 07-28-2019, 12:00 AM

RE: Fisher 500C restoration - by EdHolland - 07-28-2019, 11:08 PM

RE: Fisher 500C restoration - by morzh - 07-29-2019, 07:55 AM

RE: Fisher 500C restoration - by EdHolland - 07-31-2019, 11:43 AM

RE: Fisher 500C restoration - by Phlogiston - 07-31-2019, 12:21 PM

RE: Fisher 500C restoration - by EdHolland - 07-31-2019, 08:46 PM

RE: Fisher 500C restoration - by Joeztech - 08-02-2019, 07:47 AM

RE: Fisher 500C restoration - by Joeztech - 08-02-2019, 09:58 AM

RE: Fisher 500C restoration - by EdHolland - 08-04-2019, 04:31 PM

RE: Fisher 500C restoration - by Phlogiston - 08-05-2019, 12:01 AM

RE: Fisher 500C restoration - by EdHolland - 08-05-2019, 05:01 AM

RE: Fisher 500C restoration - by EdHolland - 08-26-2019, 12:09 AM

RE: Fisher 500C restoration - by doc_zap - 09-10-2019, 11:53 PM

RE: Fisher 500C restoration - by EdHolland - 09-11-2019, 12:24 PM

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