Report of Test on Telegraph Key and Sounder Equipment J.H. Bunnell Company, Exhibitor
[Technical Report, Formal Report]
NAVAL RESEARCH LAB WASHINGTON DC
Pagination or Media Count:
The keys and sounders were set up at this Laboratory and connected in accordance with diagram shown on Bureau drawing CA 39 S-65-403 - Alteration 3, Circuit KS. They were then carefully observed for their operating characteristics while under test for compliance with the specifications.