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Hallicrafters S-40A
#16

Hi, I am restoring a basket case Hallicrafters S40A, and have discovered that the RF interstage transformer for band 1 (broadcast) has an open secondary, which is the tuned grid circuitof the 6SA7. I've checked to see if one of the solder tabs has led to a fracture of tyhe wire and it has not, so the open wire is buried in the secondary coil. Gary Brown has depleated his supply of bandswitch mid-sections of which the transformer is part. So now I contemplate winding a replacement on an Amodon Associates toroid core. Perhaps aviewer has a parted out S40A with an intact bandswitch mid-section, and if so I'd like to hear from them. Email:nq2v@arrl.net with help or suggestions.


Messages In This Thread
Hallicrafters S-40A - by Texasrocker - 02-22-2009, 12:56 AM
Re: Hallicrafters S-40A - by exray - 02-22-2009, 09:49 AM
Re: Hallicrafters S-40A - by Texasrocker - 02-22-2009, 10:57 PM
Re: Hallicrafters S-40A - by exray - 02-22-2009, 11:17 PM
Re: Hallicrafters S-40A - by Arran - 02-22-2009, 11:37 PM
Re: Hallicrafters S-40A - by Texasrocker - 02-23-2009, 04:09 AM
Re: Hallicrafters S-40A - by Doug Houston - 02-23-2009, 07:44 PM
Re: Hallicrafters S-40A - by Texasrocker - 02-25-2009, 01:06 AM
Re: Hallicrafters S-40A - by exray - 02-25-2009, 03:54 AM
Re: Hallicrafters S-40A - by Texasrocker - 02-25-2009, 05:29 AM
Re: Hallicrafters S-40A - by AI2V - 02-27-2009, 05:00 PM
Re: Hallicrafters S-40A - by codefox1 - 02-28-2009, 03:24 PM
Re: Hallicrafters S-40A - by exray - 02-28-2009, 04:06 PM
Re: Hallicrafters S-40A - by Texasrocker - 03-02-2009, 01:28 AM
Re: Hallicrafters S-40A - by codefox1 - 03-02-2009, 03:25 PM
Re: Hallicrafters S-40A - by Guest - 08-06-2010, 05:34 PM



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