Radio forth dating
In an attempt to get the vehicle back on the road, the driver over-corrected to the left causing the vehicle to overturn and lose its load.Includes NC-100, NC-101X, NC-80X, NC-81X, NC-100A family, NC-200, NC-240CS, NC-240D Dept of Commerce & CAA Airway Communication Receivers Military Versions - RAO family, RBH, NC-100ASD, R-115, R-116 History of Design and Production, Moving Coil Catacomb Details, WWII Versions, Post-WWII Production, Serial Numbers, Restoration Write-ups Besides National's masterpiece, the HRO, another series of receivers produced by National Company, Inc.
The "detent" action was actually caused by the 15 coil pins engaging the 15 contacts which provided the positive feel of the catacomb "locking" into position.
Gone was the large split-gear, replaced with dual driven gears, one of which was spring-loaded for anti-backlash, driving via reduction gearing a large condenser drive gear.
This approach eliminated the spring loaded drive of the HRO gear box and replaced it with a much easier to operate gear box.
But, how to effectively eliminate the valid arguments against plug-in coil use in a new product?
Certainly, National was having fabulous success with the HRO receiver, which had been in production since early 1935.