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Vintage Amateur and Military Radio Amateur/military receivers and transmitters, morse, and any other related vintage comms equipment.

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Old 19th Sep 2021, 6:26 pm   #1
Andrew Humphriss
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Join Date: Jan 2009
Location: Stratford upon Avon, Warwickshire, UK.
Posts: 54
Default Hallicrafters S-40B

Has any one come across the hallicrafters S-40B with different wiring in the secondary HT and LT wiring, my receiver only has one 6.3 volt secondary the original circuit has two, one 6.3 volt windings is for the heaters and dial lamps, the other for HT circuit.
This set came like above from the USA.
73s
Andy 2E0NDZ
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Old 20th Sep 2021, 4:54 pm   #2
usradcoll1
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Join Date: Mar 2017
Location: Cedar Grove, Wisconsin, USA.
Posts: 675
Default Re: Hallicrafters S-40B

Quote:
Originally Posted by Andrew Humphriss View Post
Has any one come across the hallicrafters S-40B with different wiring in the secondary HT and LT wiring, my receiver only has one 6.3 volt secondary the original circuit has two, one 6.3 volt windings is for the heaters and dial lamps, the other for HT circuit.
This set came like above from the USA.
73s
Andy 2E0NDZ
The transformer has one 5volt winding for the 5Y3 heater, one 6.3volt winding for the heaters and dial lamps and the center tapped HT winding.
6.3volt, 2 green wires, 5volt rectifier heater, 2 yellow wires and 2 red wires with 1 red-yellow wire for the CT. 2 black wires for the 120volt primary.
Dave, USradcoll1
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Old 26th Sep 2021, 3:06 pm   #3
Andrew Humphriss
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Join Date: Jan 2009
Location: Stratford upon Avon, Warwickshire, UK.
Posts: 54
Default Re: Hallicrafters S-40B

Hi Dave
Thank you for your feed back
73s
Andy
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