Green & yellow boxes	Ah! Dumont. The 4th TV Network. Back in the 50's, before Fox was even a sparkle in anyone's eye. They also made televisions and bought the Emerson name for a while. Now someone else has the Emerson name. That's where our relationship came from. We sold Dumont TV's on consignment in the early 70's. Our wholesaler was a full line supplier so we also got many transmitting tubes from them.
courtesy Bob Ellingson

Dumont tubes were good. Their EIA code was 158, but many carry the Sylvania 312 on them. Dumont was one of the few companies that put their code plus the original supplier's code, if it wasn't them. They used the year-week date code, but often had the 3 letter Sylvania code also. Tube writing was usually red or orange in the gold box and green or yellow in either green and yellow box.

Another note about Dumont. I wonder how many Engineers and Technicians in my age group had their first experience in using an o'scope with an old Dumont. I did. The first scope I owned was an EICO 465, but the first scope I ever used was an old Dumont. Although I can't remember the model number, I can still picture it in my mind. I bet there's a bunch of us.

For Wikipedia thumbnail bio of Allen B. DuMont

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