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Vintage Radio (domestic) Domestic vintage radio (wireless) receivers only. |
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7th Jan 2018, 5:11 pm | #1 |
Hexode
Join Date: Aug 2014
Location: Dartford, Kent, UK.
Posts: 435
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KB FB10/2 Driver Cord
I have just got one of these working and it sounds pretty good after more than 20 years in storage. All the wax caps were replaced and it burst into life again.
The tuning cord was already broken when I got it and a piece of it missing so I cannot get a proper guess at its original length. Trader sheet 969 says to use "around 4 feet" of cord and the KB Service Data sheet, January 1954, doesn't appear to give any length at all. Not only that the pictures in the 2 manuals show different ways of stringing up the cord. Can anyone help me out on this one? (Hints on tying the knots would also be useful!) Cheers John |
7th Jan 2018, 5:22 pm | #2 |
Rest in Peace
Join Date: Mar 2011
Location: Basildon, Essex, UK.
Posts: 4,100
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Re: KB FB10/2 Driver Cord
The FB10 service manual on my KB Museum web site has a clear diagram, it is the same for all models including the FB10 FM. Regarding tying the knots, a loop tied in one end to hook on the drive drum, and then use 3 half hitches to tie to the spring, then trim the excess off. I put a dab of PVA glue on the knots to stop them slipping.
http://www.kbmuseum.org.uk/kb_servic...KB_FB10_kb.pdf Mike |
7th Jan 2018, 9:28 pm | #3 |
Hexode
Join Date: Aug 2014
Location: Dartford, Kent, UK.
Posts: 435
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Re: KB FB10/2 Driver Cord
Hello Mike, thank you for the information - especially for the knots.
The manual mentions a part number for the dial cord but not the cord length. Trader Sheet 969 does mention a length of around 4 feet but the diagram in that document looks to be different to the KB manual so I was after clarification. This radio conforms to the FB10 Modified Circuit Diagram as per the Service Data Supplement dated January 1954. The serial number is 61459 so I think everything is as it should be. As previously mentioned the ferrite rod had come loose and I have used tie wraps to secure it. There were a few bits of plastic floating around when I opened the case and I would like to see a picture of how the rod was originally secured just to satisfy my curiosity. Thanks again for your help. Kind regards John |
8th Jan 2018, 12:05 am | #4 |
Rest in Peace
Join Date: Mar 2011
Location: Basildon, Essex, UK.
Posts: 4,100
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Re: KB FB10/2 Driver Cord
There is a photo showing the ferrite aerial on this page, (photo no. 15 with a red background). https://www.radiomuseum.org/r/kolste...ster_fb10.html
The pieces of plastic may have been the elastic they originally used to secure the aerial to the paxolin mounting. The rubber goes hard and cracks, then falls away. Mike |
8th Jan 2018, 12:20 am | #5 |
Hexode
Join Date: Aug 2014
Location: Dartford, Kent, UK.
Posts: 435
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Re: KB FB10/2 Driver Cord
The picture is exactly what I was after - thank you.
As I mentioned I used a couple of tie wraps, see picture, to secure mine. The last major job left is to replace the dial cord which I hope to complete soon. Cheers John |
8th Jan 2018, 12:07 pm | #6 | |
Hexode
Join Date: Aug 2014
Location: Dartford, Kent, UK.
Posts: 435
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Re: KB FB10/2 Driver Cord
Quote:
Cheers John |
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8th Jan 2018, 12:32 pm | #7 |
Rest in Peace
Join Date: Mar 2011
Location: Basildon, Essex, UK.
Posts: 4,100
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Re: KB FB10/2 Driver Cord
Good job, these are nice little radios and can be used anywhere in the house with out taking up much room.
Mike |