Why Navy? Well I’m just a nut about US Naval Communications and have created a miniature message processing center. The US Navy bought Model 28 gear exclusively for almost 40 years. The first 6000 Model 28s went to the Navy. Daniel is restoring Model 28 gear on board the USS Iowa museum ship and Jeff is doing the same on board USS New Jersey. Every Navy ship was a miniature message processing center with multiple teletypes. So that drives some of the traffic. Maybe there is just more Teletype Corp gear in circulation and that overlaps with US Navy use. And RCN too I think. If you aren’t familiar with Jerry Proc’s RCN site, it is a delight to explore. 

The US Army bought Kleinschmidt gear after WW2 and the USAF bought both Kleinschmidt and Teletype gear. While they had large message processing centers, I don’t know of anyone attempting to recreate one.  A number if people do restore tactical RATT stations with one or two Kleinschmidt pieces. 

Nick K4NYW, having fun….