Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

National NC-125
#6

Well... today I began testing, and there is good news and bad news. First I tested all the tubes, and I found that the audio output tube was very, very weak, tested bad, but with a tiny bit of life, if you know what I mean. I replaced that. The 0A2 also tested bad, but when installed it delivers the proper 150v regulation, so I am not going to worry about it. The good news is there were no explosions, and everything seems to actually be functioning. The bad news is that somebody has been into this thing and screwed around with the IF transformers. The IF is WAY off, so I am going to have to do a full and careful alignment. It is really pretty though when it is all lit up. I did have to replace the #47 bulb in the S meter, but the other one for the main dial was good.


Messages In This Thread
National NC-125 - by mikethedruid - 01-19-2021, 02:01 PM
RE: National NC-125 - by mikethedruid - 01-19-2021, 06:46 PM
RE: National NC-125 - by Arran - 01-19-2021, 09:31 PM
RE: National NC-125 - by mikethedruid - 01-20-2021, 10:16 AM
RE: National NC-125 - by mikethedruid - 01-20-2021, 10:09 PM
RE: National NC-125 - by mikethedruid - 01-21-2021, 12:53 PM
RE: National NC-125 - by mikethedruid - 01-22-2021, 12:20 AM
RE: National NC-125 - by mikethedruid - 01-22-2021, 08:48 PM
RE: National NC-125 - by EdHolland - 01-23-2021, 12:38 AM
RE: National NC-125 - by mikethedruid - 01-23-2021, 02:05 PM
RE: National NC-125 - by mikethedruid - 01-24-2021, 02:30 AM
RE: National NC-125 - by mikethedruid - 01-27-2021, 11:44 AM
RE: National NC-125 - by Radioroslyn - 01-27-2021, 01:36 PM
RE: National NC-125 - by Eliot Ness - 01-28-2021, 11:24 AM
RE: National NC-125 - by mikethedruid - 01-28-2021, 03:44 PM
RE: National NC-125 - by GarySP - 01-28-2021, 04:29 PM
RE: National NC-125 - by mikethedruid - 01-28-2021, 04:46 PM
RE: National NC-125 - by mikethedruid - 01-29-2021, 09:50 PM
RE: National NC-125 - by Paul Philco322 - 01-29-2021, 11:07 PM
RE: National NC-125 - by MrFixr55 - 04-03-2021, 09:44 AM
RE: National NC-125 - by mikethedruid - 04-03-2021, 05:28 PM
RE: National NC-125 - by Mtmattking - 11-13-2022, 09:44 PM
RE: National NC-125 - by Radioroslyn - 11-14-2022, 02:06 PM
RE: National NC-125 - by Mtmattking - 01-17-2025, 11:56 PM
RE: National NC-125 - by radiorich - 01-18-2025, 01:50 AM
RE: National NC-125 - by Mtmattking - 01-18-2025, 02:01 AM
RE: National NC-125 - by radiorich - 01-18-2025, 03:13 AM
RE: National NC-125 - by morzh - 01-18-2025, 10:46 AM
RE: National NC-125 - by GarySP - 01-18-2025, 11:04 AM
RE: National NC-125 - by radiorich - 01-18-2025, 11:08 AM
RE: National NC-125 - by Mtmattking - 01-18-2025, 07:46 PM
RE: National NC-125 - by GarySP - 01-18-2025, 08:52 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
1949 Motorola 5A9M
LOL!! Well Arran, if you do dive into it and come across any advice on dealing with accessing components let me know. I...klondike98 — 11:56 PM
1949 Motorola 5A9M
Bob and Gary; I have the further complication on the Phillips that they decided to use some 200 volt rated paper caps...Arran — 10:05 PM
1949 Motorola 5A9M
Thx Arran & Gary. Yes its super crowded in the chassis and I've debated whether to try to restuff caps or not. I t...klondike98 — 07:40 PM
1949 Motorola 5A9M
That's got to be one of the tightest conglomeration of components I've ever seen! I wonder how the line workers felt bu...GarySP — 05:46 PM
1949 Motorola 5A9M
Bob; I think that the Phillips was actually manufactured in Canada, though they may have imported many of the compone...Arran — 02:28 PM
1949 Motorola 5A9M
I've started replacing the electrolytic caps now. As Arran mentioned, they are housed under a metal strap. Here's a ph...klondike98 — 12:22 PM
1949 Motorola 5A9M
Thank for that info Arran! Very interesting. Phillips and Motorola must have made some type of marketing deal back then....klondike98 — 11:49 AM
46-1213 Schematic Question
Good idea on the fuse. These old transformers need extra protection.RodB — 10:02 AM
46-1213 Schematic Question
Hello Larry, Well, anyway I can contest about noisey grounds in my living room when I am using one outlet in my house a...radiorich — 08:03 AM
46-1213 Schematic Question
RodB & MrFixr55, Thank you both for the great replies at my questions, I appreciate the help very much.  As suggest...MissouriLarry — 07:04 AM

[-]
Who's Online
There are currently 1348 online users. [Complete List]
» 1 Member(s) | 1347 Guest(s)
Avatar

>