At nearly 0, these receivers were for affluent enthusiasts and very few were sold.
By 1934, AGS coils for 10 meter operation were being offered.
He was living in Pasadena, California and teaching part-time at Cal Tech.Hoover, of course, contacted James Millen at National Co., since the creation of a "sophisticated" design was going to require the expertise that National had gained building the AGS receivers.Have you ever wondered what the banknotes of Jamaica look like? Collecting world paper money is a wonderful way to learn about geography, anthropology, economics, mathematics, politics, art, and even biology.The accuracy of the Type-N vernier dial was excellent and the receiver's sensitivity quite good.
Since the contract was only for a handful of receivers, National decided to also produce the RHM as a civilian communications receiver called the AGS.
W9DXX, Alice Bourke, Chicago, IL ca.1935 - from Frank C. This interesting photo shows a very early HRO receiver with a Peak Pre-selector to the left and a 1934 AGS-X receiver to the right.
Alice Bourke was a reporter for the Chicago Tribune along with being very active in ham radio.
Much of the HRO's engineering seemed to contradict everything that was happening with contemporary receiver design.
Why did a receiver that seemed to defy then-modern communications receiver evolution become such a favorite of hams, the military and commercial users?
The initial receiver designed for the contract was designated the RHM. and his design team were involved to a certain degree in the electronic design of the RHM while National provided the mechanical design and assembly.