Wayne,

Yes, it was apparently 6-level, but not obvious why, as there are only 64 slots in the type box. Maybe the 6th bit was for LTRS/FIG shift, to speed things up?

Document https://www.virhistory.com/navy/manuals/tty/jh/bsps/bsp/570series/573-107-100TC.pdf gives some description.

Have fun,

Duncan
K2OEQ

On 4/14/2025 12:12 PM, WAYNE wrote:

Serviced some of these weekly while at Western Union in Springfield, MA. They had re-ink bottles for the ribbons. I think they used a 6 level code, but not sure.

I do remember the purple fingers I came home with.

When I moved to Wichita, KS another tech serviced the older box style tickers for commodities market.

The Stock offices had Trans Lux or Trans Jet displays and I helped on the service of those.

The old gents that hung around the Stock offices all day were helpful with diagnosing troubles. I remember them wondering if the Dow Jones would ever get to 2000.

73,

Wayne

KB1FDW