All American Five

[Tunin_eye Profil]

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Marcel ( Membre 162 )

[jwbento Profil]

In restoring the Canadian sets that use a 35L6, one could remove the heat producing dropping resistor in the heater string and directly replace the tube with a 50L6. If you wish to keep the set original, this resistor frequently shows signs of extreme heat stress. A 2-watt resistor was common. A 5-watt will offer a much greater safety margin when replacing.

[Daniel Profil]

I don't know about you Joseph in Utah, but here in Québec the line voltage is around 120 volts, sometimes at night mine goes up to 124, once I have seen it at 128!!!

This result in a way too hight voltage for the filaments, so a bigger droping resistor or if available in a radio that one use often replace the 35L6 by a 50L6. Unfortunately those tubes are becoming rare.

For the radios I uses a lot I replace the 35L6 by a 50C5, using a scrap loctal tube after removing the tube I weld in the tube's socket the needed solid wires from the octal socket to a miniature socket and in goes the 50C6. Not very elegant but very efficient and I have plenty of those!

The original idea came from Jean Marcotte from an article he published in our newsletter.

Daniel

[acodo Profil]

For my part, I replace the 35L6 with a 50L6 everytime I encounter one in a five tube AC-DC set. The total filament voltage being 121V I figure the higher line voltage won't harm the tubes too much, specially when the set sits on the shelf and runs only once in while for a demo.

Jean Marcotte